75,644 results match your criteria Biomass Conversion And Biorefinery[Journal]


An assessment of climate change vulnerability for Important Bird Areas in the Bering Sea and Aleutian Arc.

PLoS One 2019 17;14(4):e0214573. Epub 2019 Apr 17.

US Fish and Wildlife Service, Anchorage, Alaska, United States of America.

Recently available downscaled ocean climate models for the Bering Sea and Aleutian Arc offer the opportunity to assess climate vulnerability for upper trophic level consumers such as marine birds. We analyzed seasonal and annual spatial projections from three climate models for two physical climate variables (seawater temperature and sea ice) and three forage variables (large copepods, euphausiids, and benthic infauna), comparing projected conditions from a recent time period (2003-2012) to a future time period (2030-2039). We focused the analyses on core areas within globally significant Important Bird Areas, and developed indices of the magnitude of projected change and vulnerability agreement among models. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0214573PLOS
April 2019
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Sustainable Continuous Flow Valorization of γ-Valerolactone with Trioxane to α-Methylene-γ-Valerolactone over Basic Beta Zeolite.

ChemSusChem 2019 Apr 17. Epub 2019 Apr 17.

SWAZILAND.

The necessity of more sustainable products and processes has led to the use of new methodologies which result in a low carbon footprint. Here, we demonstrated an efficient tandem process for the liquid-phase catalytic upgrading of lignocellulosic biomass-derived Υ-valerolactone (GVL) with trioxane (Tx) to α-methylene-Υ-valerolactone (MeGVL) in flow using Cs-loaded hierarchical beta zeolites. The introduction of mesopores along with the presence of basic sites of mild strength led to 20-times higher MeGVL productivity compared to the bulk beta zeolite reaching 0. Read More

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http://dx.doi.org/10.1002/cssc.201900418DOI Listing

Utilization of prickly pear waste for baker's yeast production.

Biotechnol Appl Biochem 2019 Apr 17. Epub 2019 Apr 17.

Laboratory Reactions and Process Engineering (LRPE), UMR CNRS 7224, University of Lorraine, ENSAIA, Vandoeuvre Cedex, 54505, France.

The feasibility of baker's yeast production using fruits and peels of Opuntia ficus indica (OFI) as carbohydrate feedstock was investigated. Two response surface methodologies involving central composite face centered design (CCFD) were successfully applied. The effects of four independent variables on baker's yeast production from OFI fruit juice was evaluated using the first CCFD. Read More

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http://dx.doi.org/10.1002/bab.1753DOI Listing

Microbial turnover of glyphosate to biomass: utilization as nutrient source, formation of AMPA and biogenic NER in an OECD 308 test.

Environ Sci Technol 2019 Apr 17. Epub 2019 Apr 17.

Environmental fate assessment of chemicals involves standardized simulation tests with isotope-labeled molecules to balance transformation, mineralization, and formation of non-extractable residues (NER). Methods to predict microbial turnover and biogenic NER have been developed, having limited use when metabolites accumulate, the chemicals are not the only C source, or provides for other macro-elements. To improve predictive capability, we extended a recently developed method for microbial growth yield estimation for incomplete degradation and multiple-element assimilation and combined it with a dynamic model for fate description in soils and sediments. Read More

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http://dx.doi.org/10.1021/acs.est.9b01259DOI Listing

Historical Black Carbon Reconstruction from the Lake Sediments of the Himalayan - Tibetan Plateau.

Environ Sci Technol 2019 Apr 17. Epub 2019 Apr 17.

Black Carbon (BC) is one of the major drivers of climate change and its measurement in different environment is crucial for better understanding of long-term trend in Himalayan-Tibetan Plateau (HTP) as climate warming has intensified in the region. We present measurement of BC concentration from six lake sediments in HTP to reconstruct historical BC deposition since the preindustrial era. Our results show an increasing trend of BC, concurrent with increased anthropogenic emission pattern after the commencement of an industrialization era during the 1950s. Read More

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http://dx.doi.org/10.1021/acs.est.8b07025DOI Listing

[Effects of different manure nitrogen input ratio on rhizosphere soil microbial biomass carbon, nitrogen and microbial quotient in double-cropping rice field].

Ying Yong Sheng Tai Xue Bao 2019 Apr;30(4):1335-1343

Hunan Soil and Fertilizer Institute, Changsha 410125, China.

To explore the characteristics of rhizosphere soil microorganisms in paddy fields with different manure nitrogen (N) input ratios at different growth stages of early and late rice in double-cropping rice system, a field experiment was conducted with five different treatments: 1) 100% N of chemical fertilizer (M), 2) 30% N of organic matter and 70% N of chemical fertilizer (M), 3) 50% N of organic matter and 50% N of chemical fertilizer (M), 4) 100% N of organic matter (M), and 5) no N fertilizer input as a control (M). The rhizosphere soil microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), and microbial quotient (SQ) of the paddy fields were measured using the fumigation-extraction and chemical analysis methods. The results showed that the rhizosphere MBC, MBN, and SQ of the paddy fields at main different growth stages of early and late rice were increased by fertilization, which increased first and then decreased with the development of rice growth period, peaked at the heading stage, and reached the minimum value at the maturity stage. Read More

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http://dx.doi.org/10.13287/j.1001-9332.201904.014DOI Listing

[Responses of soil microbial biomass C and P to different long-term fertilization treatments in the yellow paddy soil].

Ying Yong Sheng Tai Xue Bao 2019 Apr;30(4):1327-1334

Scientific Observing and Experimental Station of Arable Land Conservation and Agriculture Environment Guizhou, Ministry of Agriculture and Rural Affairs, Guiyang 550006, China.

To explore the rational fertilization mode to improve the availability of soil phosphorus (P), we analyzed the changes and coupling characteristics of soil carbon (C) and P, microbial biomass C (MBC) and P (MBP) under different fertilization modes with a successive 22-year field experiment in yellow paddy soil. The experiment had 10 treatments, including no fertilization (CK), single application of nitrogen (N), combination of phosphorus and potassium (PK), combination of nitrogen and potassium (NK), combination of nitrogen and phosphorus (NP), combination of nitrogen, phosphorus and potassium (NPK), single application of organic fertilizer (M), and three organic-inorganic fertilizer combinations (1/4M+3/4NP, 0.5MNP, MNPK). Read More

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http://dx.doi.org/10.13287/j.1001-9332.201904.020DOI Listing

[Effects of nitrogen fertilizer reduction management on photosynthesis and chlorophyll fluorescence characteristics of sweetpotato].

Ying Yong Sheng Tai Xue Bao 2019 Apr;30(4):1253-1260

Crop Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China.

Crop productivity depends on photosynthetic source capacity. Appropriate nitrogen (N) fertilizer management is beneficial for improving growth, photosynthetic capacity and thereby increasing crops yield. A two-year pot experiment was conducted with four N treatments, i. Read More

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http://dx.doi.org/10.13287/j.1001-9332.201904.012DOI Listing

Ultrathin 2D nitrogen-doped carbon nanosheets for high performance supercapacitors: insight into the effects of graphene oxides.

Nanoscale 2019 Apr 17. Epub 2019 Apr 17.

School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China.

Ultrathin 2D nitrogen-doped carbon nanosheets with a thickness of about 5 nm have been facilely synthesized from potato starch by using graphene oxides (GO) as the structure-directing agent. The pore structures and surface properties can be feasibly and rationally tailored by addition of a certain amount of GO in the precursor. The addition of GO to the potato starch can increase the surface areas and the pyridinic-N and pyrrolic-N ratios of the as-prepared 2D carbon nanosheets. Read More

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http://dx.doi.org/10.1039/c9nr01290gDOI Listing

Effects of simulated climate warming on the population dynamics of Sitobion avenae (Fabricius) and its parasitoids in wheat fields.

Pest Manag Sci 2019 Apr 16. Epub 2019 Apr 16.

State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.

Background: Climate warming has considerable effects on crop development and pest population dynamics. Crucially, the tri-trophic responses to warming of the plants, herbivores and their natural enemies are poorly understood. To delineate these interactive properties, a three-system approach and integrating life table methodology was used to examine responses of wheat plants, English grain aphid and parasitoids under open-field infrared heating to simulate warming. Read More

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http://dx.doi.org/10.1002/ps.5447DOI Listing

Selenium enriched Coriolus versicolor mushroom biomass: potential novel food supplement with improved selenium bioavailability.

J Sci Food Agric 2019 Apr 16. Epub 2019 Apr 16.

University of Belgrade, Faculty of Agriculture, Department of Food and Industrial Microbiology, Belgrade, Serbia.

Background: The ability of Coriolus versicolor medicinal mushroom to accumulate and transform selenium from selenourea and sodium selenite into an organic form L-selenomethionine during growth in liquid medium is examined in this paper. Additionally, the impact of supplementation on biological activity of the selenated mushroom methanol extracts, as well as their chemical composition is studied.

Results: Selenium accumulation was more efficient with sodium selenite application, but biomass yield was significantly lower (1. Read More

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http://dx.doi.org/10.1002/jsfa.9756DOI Listing

Environmentally Benign Carbon Nanodots Prepared from Lemon for the Sensitive and Selective Fluorescence Detection of Fe(III) and Tannic Acid.

J Fluoresc 2019 Apr 16. Epub 2019 Apr 16.

Department of Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, Tamil Nadu, 625021, India.

Photoluminescent carbon nanodots (CNDs) were prepared using a biocarbon source of lemon extract. The obtained CNDs are of spherical shape and are enriched with the carboxylic acid fucntionalities. CNDs exhibited a fluorescence emission at 445 nm and unveiled blue luminescence in ultraviolet excitation. Read More

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http://dx.doi.org/10.1007/s10895-019-02360-wDOI Listing
April 2019
1.927 Impact Factor

Lipid production from indigenous Greek microalgae: a possible biodiesel source.

Biotechnol Lett 2019 Apr 16. Epub 2019 Apr 16.

Microbiology Group, Sector of Botany, Department of Biology, National and Kapodistrian University of Athens, Zografou Campus, 15781, Athens, Greece.

Objective: Microalgae gained interest for potential use as biodiesel producers, since they synthesize and accumulate significant quantities of lipids. The aim of this work was to isolate indigenous microalgae strains from Greek habitats, study their physicochemical growth conditions and finally select the best ones with respect to overall lipid production and profile.

Results: Two sampling sites of marine aquatic ecosystems were selected in Attica prefecture, Greece in order to screen for novel wild type strains with lipid production capacity. Read More

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http://dx.doi.org/10.1007/s10529-019-02658-6DOI Listing

Production and recovery of poly-3-hydroxybutyrate bioplastics using agro-industrial residues of hemp hurd biomass.

Bioprocess Biosyst Eng 2019 Apr 16. Epub 2019 Apr 16.

Department of Chemical Engineering, Ryerson University, 350 Victoria St, Toronto, ON, M5B 2K3, Canada.

The present study describes production and recovery of poly(3-hydroxybutyrate) P(3HB) from agro-industrial residues. Production was conducted using Ralstonia eutropha strain with hemp hurd biomass hydrolysates sugars as a carbon source and ammonium chloride as the nitrogen source. Results show that maximum hydrolysis yield of 72. Read More

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http://dx.doi.org/10.1007/s00449-019-02109-6DOI Listing

Complete Genome Sequence of Paenibacillus sp. CAA11: A Promising Microbial Host for Lignocellulosic Biorefinery with Consolidated Processing.

Curr Microbiol 2019 Apr 16. Epub 2019 Apr 16.

Clean Energy Research Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea.

Several bioprocessing technologies, such as separate hydrolysis and fermentation (SHF), simultaneous saccharification and fermentation (SSF), and consolidated bioprocessing (CBP), have been highlighted to produce bio-based fuels and chemicals from lignocellulosic biomass. Successful CBP, an efficient and economical lignocellulosic biorefinery process compared with other processes, requires microorganisms with sufficient cellulolytic activity and biofuel/chemical-producing ability. Here, we report the complete genome of Paenibacillus sp. Read More

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http://dx.doi.org/10.1007/s00284-019-01685-wDOI Listing

Aridity thresholds of soil microbial metabolic indices along a 3,200 km transect across arid and semi-arid regions in Northern China.

PeerJ 2019 9;7:e6712. Epub 2019 Apr 9.

Erguna Forest-Steppe Ecotone Research Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning, China.

Soil microbial processes are crucial for understanding the ecological functions of arid and semi-arid lands which occupy approximately 40% of the global terrestrial ecosystems. However, how soil microbial metabolic activities may change across a wide aridity gradient in drylands remains unclear. Here, we investigated three soil microbial metabolic indices (soil organic carbon (SOC)-based microbial respiration, metabolic quotient, and microbial biomass as a proportion of total SOC) and the degree of carbon limitation for microbial respiration along a 3,200 km transect with a wide aridity gradient. Read More

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http://dx.doi.org/10.7717/peerj.6712DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6461032PMC

Direct enzymatic ethanolysis of potential biomass for co-production of sustainable biodiesel and nutraceutical eicosapentaenoic acid.

Biotechnol Biofuels 2019 5;12:78. Epub 2019 Apr 5.

1BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China.

Background: Marine microalga is a promising source for the production of renewable and sustainable biodiesel in replacement of depleting petroleum. Other than biodiesel, is a green and potential resource for the commercial production of nutraceutical eicosapentaenoic acid (EPA, C). In recent studies, low-value biodiesel can be achieved by transesterification of biomass. Read More

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https://biotechnologyforbiofuels.biomedcentral.com/articles/
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http://dx.doi.org/10.1186/s13068-019-1418-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6449970PMC
April 2019
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Phytoplankton and Its Role in Accumulation of Microelements in Bottom Deposits of Azov Sea.

ScientificWorldJournal 2019 12;2019:8456371. Epub 2019 Mar 12.

Southern Federal University, Institute of Earth Science, Rostov-on-Don 344090, Russia.

The importance of phytoplankton is high in transformation of substances in aquatic ecosystems and in formation of suspension's material structure. Its main functions are consumption of the dissolved biogenic components and chemical elements and their conversion to a firm phase. The article is devoted to the bioaccumulation of microelements by phytoplankton in the ecosystem of the Azov Sea. Read More

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http://dx.doi.org/10.1155/2019/8456371DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6434276PMC

Nutrient removal and microalgal biomass production from different anaerobic digestion effluents with Chlorella species.

Sci Rep 2019 Apr 16;9(1):6123. Epub 2019 Apr 16.

School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan, 44919, Republic of Korea.

Potential of microalgal cultivation as an alternative approach to the treatment of anaerobic digestion (AD) effluents was examined using two representative Chlorella species, Chlorella vulgaris (CV) and Chlorella protothecoides (CP). Both species effectively removed NH-N from the AD effluents from four digesters treating different wastes under different operating conditions. In all experimental cultures on the AD effluents, NH-N (initial concentration, 40 mg/L) was completely removed within 10 days without residual NO-N or NO-N in batch mode. Read More

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http://dx.doi.org/10.1038/s41598-019-42521-2DOI Listing

Towards precision quantification of contamination in metagenomic sequencing experiments.

Microbiome 2019 Apr 16;7(1):62. Epub 2019 Apr 16.

Department of Biochemistry and Biophysics, University of California, San Francisco School of Medicine, San Francisco, CA, USA.

Metagenomic next-generation sequencing (mNGS) experiments involving small amounts of nucleic acid input are highly susceptible to erroneous conclusions resulting from unintentional sequencing of occult contaminants, especially those derived from molecular biology reagents. Recent work suggests that, for any given microbe detected by mNGS, an inverse linear relationship between microbial sequencing reads and sample mass implicates that microbe as a contaminant. By associating sequencing read output with the mass of a spike-in control, we demonstrate that contaminant nucleic acid can be quantified in order to identify the mass contributions of each constituent. Read More

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http://dx.doi.org/10.1186/s40168-019-0678-6DOI Listing

Compensatory responses can alter the form of the biodiversity-function relation curve.

Proc Biol Sci 2019 Apr;286(1901):20190287

1 Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton , Waterfront Campus, European Way, Southampton SO14 3ZH , UK.

There is now strong evidence that ecosystem properties are influenced by alterations in biodiversity. The consensus that has emerged from over two decades of research is that the form of the biodiversity-functioning relationship follows a saturating curve. However, the foundation from which these conclusions are drawn mostly stems from empirical investigations that have not accounted for post-extinction changes in community composition and structure, or how surviving species respond to new circumstances and modify their contribution to functioning. Read More

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http://dx.doi.org/10.1098/rspb.2019.0287DOI Listing

Enhancement of Hydrotropic Fractionation of Poplar Wood using Autohydrolysis and Disk Refining Pretreatment: Morphology and Overall Chemical Characterization.

Polymers (Basel) 2019 Apr 15;11(4). Epub 2019 Apr 15.

School of Materials and Energy, Center of Emerging Material and Technology, Guangdong University of Technology, Guangzhou 510006, China.

Solid acids have been proposed as a hydrolytic agent for wood biomass dissolution. In this work, we presented an environmentally friendly physicochemical treatment to leave behind cellulose, dissolve hemicellulose, and remove lignin from poplar wood. Several pretreatments, such as autohydrolysis and disk refining, were compared to optimize and modify the process. Read More

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http://dx.doi.org/10.3390/polym11040685DOI Listing

Migration of soil microbes may promote tree seedling tolerance to drying conditions.

Ecology 2019 Apr 16:e02729. Epub 2019 Apr 16.

Department of Plant Pathology, University of Wisconsin - Madison, 391 Russell Labs, 1630 Linden Dr., Madison, Wi, 53706.

Soil-microbial interactions have the potential to mediate the ability of tree populations to persist in their current location or establish in new areas. Immigration of microbial taxa from drier conditions may promote seedling tolerance to drying climates. In a greenhouse experiment, we determined seedling performance of Ostrya virginiana and Betula nigra seedlings after experimentally swapping sterilized soils and local and foreign microbial inocula from nine sites over a gradient of precipitation and soil types, in well-watered and water reduced conditions. Read More

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http://dx.doi.org/10.1002/ecy.2729DOI Listing

Photochemical evolution of continental air masses and their influence on ozone formation over the South China Sea.

Sci Total Environ 2019 Apr 8;673:424-434. Epub 2019 Apr 8.

School of Atmospheric Sciences, Sun Yat-sen University, China.

To investigate photochemical ozone (O) pollution over the South China Sea (SCS), an intensive sampling campaign was conducted from August to November simultaneously at a continental site (Tung Chung, TC) and a marine site (Wan Shan Island, WSI). It was found that when continental air masses intruded the SCS, O episodes often occurred subsequently. To discover the causes, a photochemical trajectory model (PTM) coupled with the near-explicit Master Chemical Mechanism (MCM) was adopted, and the photochemical processes of air masses during the transport from TC to WSI were investigated. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.04.075DOI Listing

Enhancing wastewater remediation by drinking water treatment residual-augmented floating treatment wetlands.

Sci Total Environ 2019 Apr 8;673:230-236. Epub 2019 Apr 8.

State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, PR China.

In this study, the involvement of aluminum-based drinking water treatment residual (DWTR) as substrate in floating treatment wetland (FTW) to enhance its treatment performance was firstly proposed and trialed. A laboratory scale DWTR-FTW fed with synthetic wastewater containing COD, nitrogen (N), phosphorus (P) and mineral salts was operated in three stages of unplanted (1-30 days), planted (31-60 days) and aerated (61-135 days) modes. The results showed that the average removal rates of COD, total nitrogen (TN), total phosphorus (TP) in stage 3 were 88%, 85%, and 90. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.04.035DOI Listing

Effects of fly ash application on plant biomass and element accumulations: a meta-analysis.

Environ Pollut 2019 Apr 6;250:137-142. Epub 2019 Apr 6.

Department of Biological Sciences, Tennessee State University, Nashville, TN, USA. Electronic address:

Fly ash generated from coal-fired power plants is a source of potential pollutants, but can be used as a soil ameliorant to increase plant biomass and yield in agriculture. However, the effects of fly ash soil application on plant biomass and the accumulation of both nutrient and toxic elements in plants remain unclear. Based on 85 articles, we conducted a comprehensive meta-analysis to evaluate changes in plant biomass and concentrations of 21 elements in plants in response to fly ash application. Read More

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http://dx.doi.org/10.1016/j.envpol.2019.04.013DOI Listing
April 2019
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Regulation of antioxidant production, ion uptake and productivity in potato (Solanum tuberosum L.) plant inoculated with growth promoting salt tolerant Bacillus strains.

Ecotoxicol Environ Saf 2019 Apr 13;178:33-42. Epub 2019 Apr 13.

Department of Environmental Sciences, COMSATS University Islamabad, Vehari-Campus, Vehari, 61100, Pakistan. Electronic address:

The exchangeable sodium (Na) in salt affected soils is a major constraint in potassium (K) availability to plants that disturb ion transport and inhibit plant growth, adversely. Salt tolerant plant growth promoting rhizobacteria (PGPR) may regulate the Na/K efflux and increase K uptake by the plant from the soil. Therefore, a pot study was performed to examine the effect of salt tolerant PGPR Bacillus sp. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2019.04.027DOI Listing

Torrefaction and carbonization of refuse derived fuel: Char characterization and evaluation of gaseous and liquid emissions.

Bioresour Technol 2019 Apr 6;285:121325. Epub 2019 Apr 6.

MEtRICs, Mechanical Engineering and Resource Sustainability Center, Department of Sciences and Technology of Biomass, Faculty of Sciences and Technology, NOVA University of Lisbon, 2829-516 Caparica, Portugal; VALORIZA, Research Center for Endogenous Resource Valorization, Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal. Electronic address:

Refuse derived fuel containing non-hazardous industrial wastes was subjected to torrefaction and carbonization in an industrial furnace. The RDF samples were heated at 300 °C and 400 °C, for 30 min, yielding solid products (chars) as well as gases and liquids. Proximate and ultimate composition, mineral composition, chlorine content and high heating value were determined for the original sample and the produced chars. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09608524193054
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http://dx.doi.org/10.1016/j.biortech.2019.121325DOI Listing
April 2019
1 Read

Enhancing Haematococcus pluvialis biomass and γ-aminobutyric acid accumulation by two-step cultivation and salt supplementation.

Bioresour Technol 2019 Apr 11;285:121334. Epub 2019 Apr 11.

Faculty of Life Sciences and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China. Electronic address:

The primary goal of this study was to assess the roles of chemical factors and bioprocess strategies on a mixotrophic culture of the microalga Haematococcus pluvialis during γ-aminobutyric acid (GABA) production. A two-stage strategy was used to increase the biomass and GABA accumulation of H. pluvialis. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.121334DOI Listing

Development of gelatin/bacterial cellulose composite sponges as potential natural wound dressings.

Int J Biol Macromol 2019 Apr 13. Epub 2019 Apr 13.

Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, PR China; Jiangsu Key Lab for the Chemistry & Utilization of Agricultural and Forest Biomass, PR China; College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, PR China. Electronic address:

A novel composite sponge comprising of bacterial cellulose (BC) and gelatin (BG) has been synthesized using glutaraldehyde as the cross-linker by a facile method. The morphology, chemical composition and structures of the novel sponges were characterized by SEM, EDS and FTIR spectroscopy. The fabricated BG sponges have regular 3D network structure with uniform pore distribution and large surface area. Read More

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http://dx.doi.org/10.1016/j.ijbiomac.2019.04.095DOI Listing

Effect of long-term organic and mineral fertilization strategies on rhizosphere microbiota assemblage and performance of lettuce.

Environ Microbiol 2019 Apr 16. Epub 2019 Apr 16.

Leibniz Institute of Vegetable and Ornamental Crops (IGZ), Plant-Microbe Systems, Großbeeren, Germany.

Long-term agricultural fertilization strategies gradually change soil properties including the associated microbial communities. Cultivated crops recruit beneficial microbes from the surrounding soil environment via root exudates. In this study, we aimed to investigate the effects of long-term fertilization strategies across field sites on the rhizosphere prokaryotic (Bacteria and Archaea) community composition and plant performance. Read More

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https://onlinelibrary.wiley.com/doi/abs/10.1111/1462-2920.14
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http://dx.doi.org/10.1111/1462-2920.14631DOI Listing
April 2019
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Unidirectional presentation of membrane proteins in nanoparticle-supported liposomes.

Angew Chem Int Ed Engl 2019 Apr 16. Epub 2019 Apr 16.

Harvard Medical School, BCMP, 250 Longwood Ave, SGM 105, 02115, Boston, UNITED STATES.

Presentation of membrane proteins to host immune systems has been a challenging problem due to complexity arising from the poor in vivo stability of the membrane-mimetic media often used for solubilizing the membrane proteins. We report the use of functionalized, biocompatible nanoparticles as substrates to guide the formation of proteoliposomes that can present many copies of membrane proteins in a unidirectional manner. The approach was demonstrated to present the membrane-proximal region of the HIV-1 envelope glycoprotein. Read More

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http://doi.wiley.com/10.1002/anie.201903093
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http://dx.doi.org/10.1002/anie.201903093DOI Listing
April 2019
1 Read

The Paris pledges and the energy-water-land nexus in Latin America: Exploring implications of greenhouse gas emission reductions.

PLoS One 2019 16;14(4):e0215013. Epub 2019 Apr 16.

Joint Global Change Research Institute, Pacific Northwest National Laboratory, College Park, Maryland, United States of America.

In the 2015 Paris Agreement, nations worldwide pledged emissions reductions (Nationally Determined Contributions-NDCs) to avert the threat of climate change, and agreed to periodically review these pledges to strengthen their level of ambition. Previous studies have analyzed NDCs largely in terms of their implied contribution to limit global warming, their implications on the energy sector or on mitigation costs. Nevertheless, a gap in the literature exists regarding the understanding of implications of the NDCs on countries' Energy-Water-Land nexus resource systems. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0215013PLOS

[Effects of light intensities on growth,physiological characteristic and chemical composition of Viola yedoensis].

Zhongguo Zhong Yao Za Zhi 2019 Mar;44(6):1119-1125

Institute of Chinese Medicinal Materials,Nanjing Agricultural University Nanjing 210095,China.

The study is aimed to investigate the effects of light intensities on growth,photosynthetic physiology,antioxidant systems and chemical composition of Viola yedoensis and provide cultivation references for V.yedoensis.Five groups of V. Read More

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http://www.cnki.net/kcms/doi/10.19540/j.cnki.cjcmm.20181226.
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http://dx.doi.org/10.19540/j.cnki.cjcmm.20181226.008DOI Listing
March 2019
1 Read

[Effect of Chrysanthemum indicum on absorption characteristics of Cd and its effect on quality of medicinal materials].

Zhongguo Zhong Yao Za Zhi 2019 Feb;44(4):641-647

Sanjiu Medical & Pharmaceutical Co.,Ltd. Shenzhen 518110,China.

The Cd stress of Chrysanthemum indicum was treated by different concentrations of Cd Cl2 solution in the culture substrate. The content of Cd in different parts of Ch. indicum and the content of buddleoside and the total flavonoids in Ch. Read More

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http://dx.doi.org/10.19540/j.cnki.cjcmm.2019.0013DOI Listing
February 2019

Effect of forest fire prevention treatments on bacterial communities associated with productive Boletus edulis sites.

Microb Biotechnol 2019 Apr 15. Epub 2019 Apr 15.

Fire and Applied Mycology Laboratory, Departments of Agroforestry Sciences and Vegetal Production and Natural Resources, Sustainable Forest Management Research Institute, University of Valladolid (Palencia), Avda. Madrid 44, 34071, Palencia, Spain.

Cistus ladanifer scrublands, traditionally considered as unproductive, have nonetheless been observed to produce large quantities of king bolete (Boletus edulis) fruitbodies. These pyrophytic scrublands are prone to wildfires, which severely affect fungi, hence the need for fire prevention in producing C. ladanifer scrublands. Read More

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http://dx.doi.org/10.1111/1751-7915.13395DOI Listing

Plant community responses to stand-level nutrient fertilization in a secondary tropical dry forest.

Ecology 2019 Apr 15:e02691. Epub 2019 Apr 15.

Departments of Ecology, Evolution, and Behavior and Plant and Microbial Biology, University of Minnesota, Saint Paul, Minnesota, 55108, USA.

The size of the terrestrial carbon (C) sink is mediated by the availability of nutrients that limit plant growth. However, nutrient controls on primary productivity are poorly understood in the geographically extensive yet understudied tropical dry forest biome. To examine how nutrients influence above- and belowground biomass production in a secondary, seasonally dry tropical forest, we conducted a replicated, fully factorial nitrogen (N) and phosphorus (P) fertilization experiment at the stand scale in Guanacaste, Costa Rica. Read More

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http://dx.doi.org/10.1002/ecy.2691DOI Listing

Tunisian tomato waste pyrolysis: thermogravimetry analysis and kinetic study.

Environ Sci Pollut Res Int 2019 Apr 15. Epub 2019 Apr 15.

Institut de Sciences des Matériaux de Mulhouse, UMR 7661 CNRS, 15 rue Jean Starcky, 68057, Mulhouse, France.

This paper aims to set up viable units of thermal processing of numerous agricultural wastes in a sustainable development and eco-friendly approach that could create new economic profitable circuits in an increasingly competitive context. One of the most problematic food wastes are tomato processing by-products; concentrating and canning industrial activities generate important amounts of them, particularly in the Tunisian context. As no reference was found in literature dealing with these last residues, this work intended to explore their potential as biomass fuels. Read More

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http://dx.doi.org/10.1007/s11356-019-04675-4DOI Listing

Fluorescent Nano-Biomass Dots: Ultrasonic-Assisted Extraction and Their Application as Nanoprobe for Fe detection.

Nanoscale Res Lett 2019 Apr 15;14(1):130. Epub 2019 Apr 15.

Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, School of Physics and Engineering, Zhengzhou University, No. 75 Daxue Road, Zhengzhou, 450052, People's Republic of China.

Biomass as sustainable and renewable resource has been one of the important energy sources for human life. Herein, luminescent nano-biomass dots (NBDs) have been extracted from soybean through ultrasonic method, which endows biomass with fluorescence property. The as-prepared NBDs are amorphous in structure with an average diameter of 2. Read More

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https://nanoscalereslett.springeropen.com/articles/10.1186/s
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http://dx.doi.org/10.1186/s11671-019-2950-xDOI Listing
April 2019
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Consumer adaptation mediates top-down regulation across a productivity gradient.

Oecologia 2019 Apr 15. Epub 2019 Apr 15.

School of Fisheries, Aquaculture, and Aquatic Sciences, 203 Swingle Hall, Auburn University, Auburn, AL, 36849, USA.

Humans have artificially enhanced the productivity of terrestrial and aquatic ecosystems on a global scale by increasing nutrient loading. While the consequences of eutrophication are well known (e.g. Read More

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http://dx.doi.org/10.1007/s00442-019-04401-4DOI Listing

The role of fish life histories in allometrically scaled food-web dynamics.

Ecol Evol 2019 Mar 21;9(6):3651-3660. Epub 2019 Feb 21.

Department of Biological and Environmental Science University of Jyväskylä Jyväskylä Finland.

Body size determines key ecological and evolutionary processes of organisms. Therefore, organisms undergo extensive shifts in resources, competitors, and predators as they grow in body size. While empirical and theoretical evidence show that these size-dependent ontogenetic shifts vastly influence the structure and dynamics of populations, theory on how those ontogenetic shifts affect the structure and dynamics of ecological networks is still virtually absent. Read More

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https://onlinelibrary.wiley.com/doi/abs/10.1002/ece3.4996
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http://dx.doi.org/10.1002/ece3.4996DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6434563PMC
March 2019
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Systematic analysis of the effects of different nitrogen source and ICDH knockout on glycolate synthesis in .

J Biol Eng 2019 4;13:30. Epub 2019 Apr 4.

1National Engineering Laboratory for Cereal Fermentation Technology (NELCF), Jiangnan University, 1800 Lihu Road, Wuxi, 214122 Jiangsu China.

Background: Glycolate is an important α-hydroxy carboxylic acid widely used in industrial and consumer applications. The production of glycolate from glucose in is generally carried out by glycolysis and glyoxylate shunt pathways, followed by reduction to glycolate. Glycolate accumulation was significantly affected by nitrogen sources and isocitrate dehydrogenase (ICDH), which influenced carbon flux distribution between the tricarboxylic acid (TCA) cycle and the glyoxylate shunt, however, the mechanism was unclear. Read More

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http://dx.doi.org/10.1186/s13036-019-0159-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6449901PMC

Genome analysis of Paenibacillus polymyxa A18 gives insights into the features associated with its adaptation to the termite gut environment.

Sci Rep 2019 Apr 15;9(1):6091. Epub 2019 Apr 15.

Microbial Engineering Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India.

Paenibacillus polymyxa A18 was isolated from termite gut and was identified as a potential cellulase and hemicellulase producer in our previous study. Considering that members belonging to genus Paenibacillus are mostly free-living in soil, we investigated here the essential genetic features that helped P. polymyxa A18 to survive in gut environment. Read More

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http://dx.doi.org/10.1038/s41598-019-42572-5DOI Listing

In situ response of Antarctic under-ice primary producers to experimentally altered pH.

Sci Rep 2019 Apr 15;9(1):6069. Epub 2019 Apr 15.

National institute of Water and Atmospheric Research, Hamilton, New Zealand.

Elevated atmospheric CO concentrations are contributing to ocean acidification (reduced seawater pH and carbonate concentrations), with potentially major ramifications for marine ecosystems and their functioning. Using a novel in situ experiment we examined impacts of reduced seawater pH on Antarctic sea ice-associated microalgal communities, key primary producers and contributors to food webs. pH levels projected for the following decades-to-end of century (7. Read More

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http://www.nature.com/articles/s41598-019-42329-0
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http://dx.doi.org/10.1038/s41598-019-42329-0DOI Listing
April 2019
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Indian annual ambient air quality standard is achievable by completely mitigating emissions from household sources.

Proc Natl Acad Sci U S A 2019 Apr 15. Epub 2019 Apr 15.

Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801.

Exposures to ambient and household fine-particulate matter (PM) together are among the largest single causes of premature mortality in India according to the Global Burden of Disease Studies (GBD). Several recent investigations have estimated that household emissions are the largest contributor to ambient PM exposure in the country. Using satellite-derived district-level PM exposure and an Eulerian photochemical dispersion model CAMx (Comprehensive Air Quality Model with Extensions), we estimate the benefit in terms of population exposure of mitigating household sources--biomass for cooking, space- and water-heating, and kerosene for lighting. Read More

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http://dx.doi.org/10.1073/pnas.1900888116DOI Listing
April 2019
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Guanidine-riboswitch-regulated efflux transporters protect bacteria against ionic liquid toxicity.

J Bacteriol 2019 Apr 15. Epub 2019 Apr 15.

The Joint BioEnergy Institute, Emeryville, California 94608, USA

Plant cell walls contain a renewable, nearly limitless supply of sugar that could be used to support microbial production of commodity chemicals and biofuels. Imidazolium ionic liquid (IIL) solvents are among the best reagents for gaining access to the sugars in this otherwise recalcitrant biomass. However, the sugars from IIL-treated biomass are inevitably contaminated with residual IILs that inhibit growth in bacteria and yeast, blocking biochemical production by these organisms. Read More

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http://dx.doi.org/10.1128/JB.00069-19DOI Listing

Quantitative macromolecular patterns in phytoplankton communities resolved at the taxonomical level by single-cell Synchrotron FTIR-spectroscopy.

BMC Plant Biol 2019 Apr 15;19(1):142. Epub 2019 Apr 15.

Department of Plant Physiology, Leipzig University, Institute of Biology, Johannisallee 21-23, 04103, Leipzig, Germany.

Background: Technical limitations regarding bulk analysis of phytoplankton biomass limit our comprehension of carbon fluxes in natural populations and, therefore, of carbon, nutrients and energy cycling in aquatic ecosystems. In this study, we took advantage of Synchrotron FTIR micro-spectroscopy and the partial least square regression (PLSr) algorithm to simultaneously quantify the protein, lipid and carbohydrate content at the single-cell level in a mock phytoplankton community (composed by a cyanobacterium, a green-alga and a diatom) grown at two temperatures (15 °C and 25 °C).

Results: The PLSr models generated to quantify cell macromolecules presented high quality fit (R ≥ 0. Read More

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http://dx.doi.org/10.1186/s12870-019-1736-8DOI Listing

Hierarchical Porous Carbon Derived from Sichuan Pepper for High-Performance Symmetric Supercapacitor with Decent Rate Capability and Cycling Stability.

Nanomaterials (Basel) 2019 Apr 4;9(4). Epub 2019 Apr 4.

Research Institute for New Materials Technology, Chongqing University of Arts and Sciences, Yongchuan, Chongqing 402160, China.

Hierarchical micro-mesoporous carbon (denoted as HPC-2 in this study) was synthesized by pre-carbonization of biomass Sichuan pepper followed by KOH activation. It possessed well-developed porosity with the specific surface area of 1823.1 m² g and pore volume of 0. Read More

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https://www.mdpi.com/2079-4991/9/4/553
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http://dx.doi.org/10.3390/nano9040553DOI Listing
April 2019
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Supercritical Fluid Extraction of Lutein from .

Molecules 2019 Apr 4;24(7). Epub 2019 Apr 4.

ENEA, Italian National Agency for New Technologies, Energy and sustainable economic Development, Department of Sustainability-CR Portici, P. Enrico Fermi, 1, 80055 Portici (NA), Italy.

Lutein has several benefits for human health, playing an important role in the prevention of age-related macular degeneration (AMD), cataracts, amelioration of the first stages of atherosclerosis, and some types of cancer. In this work, the microalga was used as a natural source for the supercritical fluid (SF) extraction of lutein. For this purpose, the optimization of the main parameters affecting the extraction, such as biomass pre-treatment, temperature, pressure, and carbon dioxide (CO₂) flow rate, was performed. Read More

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https://www.mdpi.com/1420-3049/24/7/1324
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http://dx.doi.org/10.3390/molecules24071324DOI Listing
April 2019
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Overexpression of Enhances Stress Resistance in Poplars.

Int J Mol Sci 2019 Apr 3;20(7). Epub 2019 Apr 3.

Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China.

1-Deoxy-d-xylulose-5-phosphate synthase (DXS) is the rate-limiting enzyme in the plastidial methylerythritol phosphate pathway (MEP). In this study, (XM_024607716.1) was isolated from . Read More

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https://www.mdpi.com/1422-0067/20/7/1669
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http://dx.doi.org/10.3390/ijms20071669DOI Listing
April 2019
1 Read