86,809 results match your criteria Biomass & Bioenergy[Journal]


Low phosphorus supply constrains plant responses to elevated CO : a meta-analysis.

Glob Chang Biol 2020 Jul 12. Epub 2020 Jul 12.

Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.

Phosphorus (P) is an essential macro-nutrient required for plant metabolism and growth. Low P availability could potentially limit plant responses to elevated carbon dioxide (eCO ), but consensus has yet to be reached on the extent of this limitation. Here, based on data from experiments that manipulated both CO and P for young individuals of woody and non-woody species, we present a meta-analysis of P limitation impacts on plant growth, physiological, and morphological response to eCO . Read More

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http://dx.doi.org/10.1111/gcb.15277DOI Listing

A triple-chamber microbial fuel cell enabled to synchronously recover iron and sulfur elements from sulfide tailings.

J Hazard Mater 2020 Jun 24;401:123307. Epub 2020 Jun 24.

Laboratory of Environmental Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, PR China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, PR China; Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, PR China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Wuxi 214122, PR China.

Bioleaching by coupling iron oxidization with microbial growth is a process frequently used to extract target metals from sulfide tailing piles. However, the slower leaching, longer operational times, and lower efficiency compared to those of other extracting processes are the most important reasons that make this approach unattractive for the recovery of target elements. A triple-chamber microbial fuel cell (MFC) was explored to elevate the dissolution of sulfide tailings via in-situ removal of bioleached Fe/Fe and SO, during which iron and SO ions were synchronously recovered as Fe(OH) and S° in the first and second cathode chambers, respectively. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.123307DOI Listing

Biomass pyrolysis with alkaline-earth-metal additive for co-production of bio-oil and biochar-based soil amendment.

Sci Total Environ 2020 Jul 6;743:140760. Epub 2020 Jul 6.

Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, 219 Ningliu Road, Nanjing 210044, China.

The alkaline-earth-metal (AEM) has a good performance on modification of both bio-oil and biochar during biomass pyrolysis. In this work, the pyrolysis of rice husk (RH) in the presence of CaO, CaCO, MgO and MgCO was comparatively studied for selecting an appropriate AEM additive to balance the qualities of pyrolytic products. Pyrolysis of RH with the AEM additives could decrease the acids content and increase the hydrocarbons content in bio-oil. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.140760DOI Listing

Chemical characteristics and sources of water-soluble organic aerosol in southwest suburb of Beijing.

J Environ Sci (China) 2020 Sep 16;95:99-110. Epub 2020 Apr 16.

State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing 100084, China.

PM filter sampling and components measurement were conducted in autumn and winter from 2014 to 2015 at a suburban site (referred herein as "LLH site") located in the southwest of Beijing. The offline aerosol mass spectrometry (offline-AMS) analysis and positive matrix factorization (PMF) were applied for measurement and source apportionment of water-soluble organic aerosol (WSOA). Organic aerosol (OA) always dominated PM during the sampling period, especially in winter. Read More

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http://dx.doi.org/10.1016/j.jes.2020.04.004DOI Listing
September 2020

Emission patterns of biogenic volatile organic compounds from dominant forest species in Beijing, China.

J Environ Sci (China) 2020 Sep 15;95:73-81. Epub 2020 Apr 15.

College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China. Electronic address:

Biogenic volatile organic compounds (BVOCs) have significant effects on atmospheric chemistry, ozone formation and secondary organic aerosol formation. Considering few investigations about BOVCs emissions in north China where is facing serious air pollution in recent years, emissions of various BVOCs from 24 dominant forest species in Beijing were measured from June to September in 2018, using a dynamic headspace sampling method. More than one hundred BVOCs in the collected samples were identified by using an automatic thermal desorption-gas chromatography/mass spectrometry, and their emission rates based on leaf biomass were calculated. Read More

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http://dx.doi.org/10.1016/j.jes.2020.03.049DOI Listing
September 2020

Chemical characteristics of road dust PM fraction in oasis cities at the margin of Tarim Basin.

J Environ Sci (China) 2020 Sep 8;95:217-224. Epub 2020 May 8.

College of Water Sciences, Beijing Normal University, Beijing 100875, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. Electronic address:

In order to understand the compositions characteristics of particulate matter with aerodynamic diameter less than 2.5 μm (PM) fraction in road dust (RD) of oasis cities on the edge of Tarim Basin, 30 road dust (RD) samples were collected in Kashi, Cele, and Yutian in the spring, 2018, and RD was collected using the resuspension approach. Eight water-soluble ions, 39 trace elements and 8 fractions of carbon-containing species in PM were analyzed. Read More

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http://dx.doi.org/10.1016/j.jes.2020.03.030DOI Listing
September 2020

Pollution levels, composition characteristics and sources of atmospheric PM in a rural area of the North China Plain during winter.

J Environ Sci (China) 2020 Sep 4;95:172-182. Epub 2020 May 4.

Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address:

The pollution levels, composition characteristics and sources of atmospheric PM were investigated based on field measurement at a rural site in the North China Plain (NCP) from pre-heating period to heating period in winter of 2017. The hourly average concentrations of PM frequently exceeded 150 µg/m and even achieved 400 µg/m, indicating that the PM pollution was still very serious despite the implementation of stricter control measures in the rural area. Compared with the pre-heating period, the mean concentrations of organic carbon (OC), element carbon (EC) and chlorine ion (Cl) during the heating period increased by 20. Read More

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http://dx.doi.org/10.1016/j.jes.2020.03.053DOI Listing
September 2020

Response to Grygar (2020) comments on "Potential phytomanagement of military polluted sites and biomass production using biofuel crop miscanthus x giganteus"- Pidlisnyuk et al. (2019). Environmental pollution, 261: 113038.

Environ Pollut 2020 Jun 20:115037. Epub 2020 Jun 20.

Department of Physical, Analytical and General Chemistry, National University "Lvivska Polytechnika", Sv. Yura square 9, 79013, Lviv, Ukraine. Electronic address:

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http://dx.doi.org/10.1016/j.envpol.2020.115037DOI Listing

The response of soil respiration to precipitation change is asymmetric and differs between grasslands and forests.

Glob Chang Biol 2020 Jul 11. Epub 2020 Jul 11.

Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.

Intensification of the Earth's hydrological cycle amplifies the interannual variability of precipitation, which will significantly impact on terrestrial carbon (C) cycle. However, it is still unknown whether previously observed relationship between soil respiration (R ) and precipitation remains applicable under extreme precipitation change. By analyzing the observations from a much larger dataset of field experiments (248 published papers including 151 grassland studies and 97 forest studies) across a wider range of precipitation-manipulation than previous studies, we found that the R response to precipitation change was highly nonlinear or asymmetric, and differed significantly between grasslands and forests, between moderate and extreme precipitation changes. Read More

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http://dx.doi.org/10.1111/gcb.15270DOI Listing

Potential adaptive divergence between subspecies and populations of snapdragon plants inferred from Q - F comparisons.

Mol Ecol 2020 Jul 11. Epub 2020 Jul 11.

PSL Université Paris: EPHE-UPVD-CNRS, Université de Perpignan, USR, 3278 CRIOBE, 52 Avenue Paul Alduy, 66860, 66360, Perpignan Cedex, France.

Phenotypic divergence among natural populations can be explained by natural selection or by neutral processes such as drift. Many examples in the literature compare putatively neutral (F ) and quantitative genetic (Q ) differentiation in multiple populations to assess their evolutionary signature and identify candidate traits involved with local adaptation. Investigating these signatures in closely related or recently diversified species has the potential to shed light on the divergence processes acting at the interspecific level. Read More

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http://dx.doi.org/10.1111/mec.15546DOI Listing

Biochar combined with gypsum reduces both nitrogen and carbon losses during agricultural waste composting and enhances overall compost quality by regulating microbial activities and functions.

Bioresour Technol 2020 Jul 5;314:123781. Epub 2020 Jul 5.

Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Yuanmingyuan West Road No. 2, Haidian District, Beijing 100193, China. Electronic address:

Composting is an efficient method for treating agricultural wastes. This study investigated the effects of the addition of biochar (B) and gypsum (G) to straw mixed with chicken manure (SC) (i.e. Read More

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http://dx.doi.org/10.1016/j.biortech.2020.123781DOI Listing

Carbon dioxide capture and use in photobioreactors: The role of the carbon dioxide loads in the carbon footprint.

Bioresour Technol 2020 Jun 26;314:123745. Epub 2020 Jun 26.

Bioprocess Intensification Group, Federal University of Santa Maria, UFSM, Roraima Avenue 1000, 97105-900 Santa Maria, RS, Brazil. Electronic address:

This research evaluated the carbon dioxide capture and use by Scenedesmus obliquus in a photobioreactor under different CO loads. Performance indicators, carbon and energy balances, sustainability indicators, and carbon credits on the photobioreactor were assessed. The results expressed that the CO loads of 384. Read More

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http://dx.doi.org/10.1016/j.biortech.2020.123745DOI Listing

Inclined algal biofilm photobioreactor (IABPBR) for cost-effective cultivation of lipid-rich microalgae and treatment of seawater-diluted anaerobically digested effluent from kitchen waste with the aid of phytohormones.

Bioresour Technol 2020 Jul 2;315:123761. Epub 2020 Jul 2.

School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China; Shandong Provincial Engineering Center on Environmental Science and Technology, Jinan 250061, China.

Previous study has demonstrated that freshwater can be replaced with seawater for dilution of feed to algal production and wastewater treatment, but high harvest cost in suspended-growth systems is still a troublesome limitation for large-scale production. Therefore, a novel inclined algal biofilm photobioreactor (IABPBR) was constructed for algal bioproduct production and treatment of seawater-diluted anaerobically digested effluent (SA) in this study. Fluffy polyester was selected as the best carrier for the algal biofilm among ten discarded materials. Read More

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http://dx.doi.org/10.1016/j.biortech.2020.123761DOI Listing

Micropollutants cometabolism of microalgae for wastewater remediation: Effect of carbon sources to cometabolism and degradation products.

Water Res 2020 Jun 17;183:115974. Epub 2020 Jun 17.

Faculty of Environment and Natural Resources, University of Technology, Vietnam National University - Ho Chi Minh, 268 Ly Thuong Kiet st, Dist. 10, Ho Chi Minh City, 700 000, Viet Nam.

This study investigated the impacts of selective sole carbon source-induced micropollutants (MPs) cometabolism of Chlorella sp. by: (i) extracellular polymeric substances (EPS), superoxide dismutase and peroxidase enzyme production; (ii) MPs removal efficiency and cometabolism rate; (iii) MPs' potential degradation products identification; and (iv) degradation pathways and validation using the Eawag database to differentiate the cometabolism of Chlorella sp. with other microbes. Read More

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http://dx.doi.org/10.1016/j.watres.2020.115974DOI Listing
June 2020
5.528 Impact Factor

Sealed pre-carbonization to regulate the porosity and heteroatom sites of biomass derived carbons for lithium-sulfur batteries.

J Colloid Interface Sci 2020 Jul 1;579:667-679. Epub 2020 Jul 1.

School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China. Electronic address:

Ultrathin carbon sheets with high surface area, abundant mesoporous structure and rich N, O heteroatom doping sites were prepared from puffed rice through unique sealed pre-carbonization. By utilizing them as cathode materials for lithium-sulfur batteries, the in-operando Raman spectra and electrochemical tests indicated that the polysulfides shuttling effect could be substantially suppressed by the physical confinement and chemical adsorption due to these structural advantages. In addition, the well-developed hierarchical porous structure and ultrathin thickness were found to enhance the mass diffusion in the electrode, which increased the ion conductivity within the carbon framework. Read More

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http://dx.doi.org/10.1016/j.jcis.2020.06.068DOI Listing

Synthesis, characterization, photoluminescence, antiproliferative activity, and DNA interaction of cadmium(II) substituted 4'-phenyl-terpyridine compounds.

J Inorg Biochem 2020 Jun 25;210:111165. Epub 2020 Jun 25.

School of Chemistry and Chemical Engineering, Guangxi University, 530004 Nanning, Guangxi, People's Republic of China; Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal. Electronic address:

A series of CdCl complexes (1a-1f and 2a-2c) with 4'-(substituted-phenyl)-2,2':6',2″-terpyridine compounds bearing hydrogen (L), p-methyl (L), p-phenyl (L), p-tolyl (L), p-carboxyl (L), p-fluoro (L), p-hydroxyl (L), m-hydroxyl (L) or o-hydroxyl (L), were prepared and characterized by H NMR, IR, elemental analysis and single crystal X-ray diffraction. All the compounds display interesting photoluminescent properties and different maximal emission peaks due to the difference of the substituent groups. The in vitro antiproliferative activities against four human carcinoma cell lines, A549, Bel-7402, Eca-109 and MCF-7, were investigated and cell viability studies indicate that the compounds have excellent results with the lowest IC values of 0. Read More

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http://dx.doi.org/10.1016/j.jinorgbio.2020.111165DOI Listing

Nanosecond pulsed electrical fields enhance product recovery in plant cell fermentation.

Protoplasma 2020 Jul 10. Epub 2020 Jul 10.

Molecular Cell Biology, Botanical Institute, Karlsruhe Institute of Technology, Karlsruhe, Germany.

The potential of pharmacologically active secondary plant metabolites is limited by the low yield from often rare plants, and the lack of economically feasible chemical synthesis of these complex compounds. Plant cell fermentation offers an alternative strategy to overcome these constraints. However, the efficiency of this approach is limited by intracellular sequestration of the products, such that continuous bioprocessing is not possible. Read More

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http://dx.doi.org/10.1007/s00709-020-01534-9DOI Listing

Effects of steel slag amendments on accumulation of cadmium and arsenic by rice (Oryza sativa) in a historically contaminated paddy field.

Environ Sci Pollut Res Int 2020 Jul 10. Epub 2020 Jul 10.

School of Environment and Tourism, West Anhui University, Lu'an, 237012, China.

Paddy soil contamination by cadmium (Cd) and arsenic (As) is a great concern. Field experiments were conducted to study the effects of steel slag (SS, 2.0 and 4. Read More

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http://dx.doi.org/10.1007/s11356-020-10028-3DOI Listing

Barriers for plant establishment in the abandoned tailings of Nacozari, Sonora, Mexico: the influence of compost addition on seedling performance and tailing properties.

Environ Sci Pollut Res Int 2020 Jul 10. Epub 2020 Jul 10.

Departamento de Ecología de la Biodiversidad, Instituto de Ecología, Universidad Nacional Autónoma de México, C.P. 83250, Hermosillo, Sonora, Mexico.

Past mining activities have left a legacy of abandoned mine tailing deposits whose metal contaminants poses serious risks to ecosystems and human health. While the development of a vegetated cover in mine tailings can help in mitigating these risks, the local factors limiting plant establishment in these sites are not well understood, restricting phytostabilization efforts. Here, we explore some of the barriers that limit seedling establishment of two species (Vachellia farnesiana and Prosopis velutina) in a mine tailing deposit located in Nacozari, Sonora, Mexico, and assess whether compost addition can help in overcoming these barriers in pot and field experiments. Read More

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http://dx.doi.org/10.1007/s11356-020-09841-7DOI Listing

Correction to: The impact of long dry periods on the aboveground biomass in a tropical forest: 20 years of monitoring.

Carbon Balance Manag 2020 Jul 10;15(1):14. Epub 2020 Jul 10.

Department of Forest Engineering, University of Brasília, Brasília, Brazil.

An amendment to this paper has been published and can be accessed via the original article. Read More

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http://dx.doi.org/10.1186/s13021-020-00149-0DOI Listing

Effects of Decabromodiphenyl Ether and Elevated Carbon Dioxide on Rice (Oryza sativa L.).

Bull Environ Contam Toxicol 2020 Jul 10. Epub 2020 Jul 10.

State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.

We assessed the effects of carbon dioxide (CO) and decabromodiphenyl ether (BDE-209, 0, 3 and 30 mg/kg) on rice (Oryza sativa L. cv. Wuyunjing) in field free-air CO enrichment system. Read More

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http://dx.doi.org/10.1007/s00128-020-02928-4DOI Listing

A novel AA10 from Paenibacillus curdlanolyticus and its synergistic action on crystalline and complex polysaccharides.

Appl Microbiol Biotechnol 2020 Jul 10. Epub 2020 Jul 10.

School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkok, 10150, Thailand.

Lytic polysaccharide monooxygenases (LPMOs) play an important role in the degradation of complex polysaccharides in lignocellulosic biomass. In the present study, we characterized a modular LPMO (PcAA10A), consisting of a family 10 auxiliary activity of LPMO (AA10) catalytic domain, and non-catalytic domains including a family 5 carbohydrate-binding module, two fibronectin type-3 domains, and a family 3 carbohydrate-binding module from Paenibacillus curdlanolyticus B-6, which was expressed in a recombinant Escherichia coli. Comparison of activities between full-length PcAA10A and the catalytic domain polypeptide (PcAA10A_CD) indicates that the non-catalytic domains are important for the deconstruction of crystalline cellulose and complex polysaccharides contained in untreated lignocellulosic biomass. Read More

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http://dx.doi.org/10.1007/s00253-020-10758-xDOI Listing

EGFR TKIs impair lysosome-dependent degradation of SQSTM1 to compromise the effectiveness in lung cancer.

Signal Transduct Target Ther 2019 Jul 12;4(1):25. Epub 2019 Jul 12.

Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang, Sir Run Run Shaw Hospital, Medical School of Zhejiang University, Hangzhou, China.

Tyrosine kinase inhibitors for epidermal growth factor receptor (EGFR TKIs) greatly improved clinical outcomes of patients with non-small cell lung cancer (NSCLC). Unfortunately, primary and acquired resistance limits their clinical benefits. To overcome such resistance, new generations of EGFR TKIs have been developed by targeting newly identified mutations in EGFR. Read More

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http://dx.doi.org/10.1038/s41392-019-0059-4DOI Listing

Analysis of the photoheterotrophic assimilation of valerate and associated PHA production by .

Appl Environ Microbiol 2020 Jul 10. Epub 2020 Jul 10.

Laboratory of Proteomics and Microbiology, Research Institute for Biosciences, University of Mons, Mons, Belgium.

Purple non-sulfur bacteria are increasingly regarded for industrial applications in bioplastics, pigment and biomass production. In order to optimize the yield of future biotechnological processes, the assimilation of different carbon sources by () has to be understood. As they are released from several fermentation processes, volatile fatty acids (VFAs) represent a promising carbon source in the development of circular industrial applications. Read More

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http://dx.doi.org/10.1128/AEM.00901-20DOI Listing

The Neglected Belowground Dimension of Plant Dominance.

Trends Ecol Evol 2020 Jul 7. Epub 2020 Jul 7.

Institute of Botany of the Czech Academy of Sciences, Třeboň, 37982, Czech Republic; Department of Botany, Faculty of Science, Charles University, Praha, 12800, Czech Republic.

Dominants are key species that shape ecosystem functioning. Plant dominance is typically assessed on aboveground features. However, belowground, individual species may not scale proportionally in relation to their aboveground dimension. Read More

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http://dx.doi.org/10.1016/j.tree.2020.06.006DOI Listing

Lake Drainage in Permafrost Regions Produces Variable Plant Communities of High Biomass and Productivity.

Plants (Basel) 2020 Jul 8;9(7). Epub 2020 Jul 8.

BIO-GEO-CLIM Laboratory, National Research Tomsk State University, Lenina St. 36, 634050 Tomsk, Russia.

Climate warming, increased precipitation, and permafrost thaw in the Arctic are accompanied by an increase in the frequency of full or partial drainage of thermokarst lakes. After lake drainage, highly productive plant communities on nutrient-rich sediments may develop, thus increasing the influencing greening trends of Arctic tundra. However, the magnitude and extent of this process remain poorly understood. Read More

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http://dx.doi.org/10.3390/plants9070867DOI Listing

Sustainable Carbon as Efficient Support for Metal-Based Nanocatalyst: Applications in Energy Harvesting and Storage.

Molecules 2020 Jul 8;25(14). Epub 2020 Jul 8.

Universitat Politècnica de València, Camino de Vera s/n Edificio 6C, 46022 Valencia, Spain.

Sustainable activated carbon can be obtained from the pyrolysis/activation of biomass wastes coming from different origins. Carbon obtained in this way shows interesting properties, such as high surface area, electrical conductivity, thermal and chemical stability, and porosity. These characteristics among others, such as a tailored pore size distribution and the possibility of functionalization, lead to an increased use of activated carbons in catalysis. Read More

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http://dx.doi.org/10.3390/molecules25143123DOI Listing

Revealing Further Insights on Chilling Injury of Postharvest Bananas by Untargeted Lipidomics.

Foods 2020 Jul 8;9(7). Epub 2020 Jul 8.

Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.

Chilling injury is especially prominent in postharvest bananas stored at low temperature below 13 °C. To elucidate better the relationship between cell membrane lipids and chilling injury, an untargeted lipidomics approach using ultra-performance liquid chromatography-mass spectrometry was conducted. Banana fruit were stored at 6 °C for 0 (control) and 4 days and then sampled for lipid analysis. Read More

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http://dx.doi.org/10.3390/foods9070894DOI Listing

Incorporation of solar-thermal energy into a gasification process to co-produce bio-fertilizer and power.

Environ Pollut 2020 Jun 28;266(Pt 3):115103. Epub 2020 Jun 28.

School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea. Electronic address:

Biomass integrated gasification combined cycle (IGCC) is attracting increased interest because it can achieve high system energy efficiency (>50%), which is predicted to increase with the increase in the solar share in biomass IGCC. This study evaluated the potential of crop residues numerically for the co-production of power and bio-fertilizer using ASPEN Plus® simulation software. The results showed that the gas yield increases with increasing temperature and decreasing pressure while the yield of bio-fertilizer is dependent on the biomass composition. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.115103DOI Listing

Pilot-scale cultivation of Chlorella sorokiniana FZU60 with a mixotrophy/photoautotrophy two-stage strategy for efficient lutein production.

Bioresour Technol 2020 Jul 2;314:123767. Epub 2020 Jul 2.

Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China; Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China.

Chlorella sorokiniana FZU60, a lutein-enriching microalga, was cultivated in 50 L column photobioreactor to evaluate its potential for lutein production. Initial cell concentration, phosphate concentration and aeration rate were optimized, and results showed that optimal conditions of these three parameters were 0.10 g/L, 0. Read More

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http://dx.doi.org/10.1016/j.biortech.2020.123767DOI Listing

Co-culture of microalgae-activated sludge for wastewater treatment and biomass production: Exploring their role under different inoculation ratios.

Bioresour Technol 2020 Jul 2;314:123754. Epub 2020 Jul 2.

ENAC, IIE, Central Environmental Laboratory (CEL), Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 2, 1015 Lausanne, Switzerland.

In this study, mixed culture (microalgae:activated sludge) of a photobioreactor (PBR) were investigated at different inoculation ratios (1:0, 9:1, 3:1, 1:1, 0:1 wt/wt). This work was not only to determine the optimal ratio for pollutant remediation and biomass production but also to explore the role of microorganisms in the co-culture system. The results showed high total biomass concentrations were obtained from 1:0 and 3:1 ratio being values of 1. Read More

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http://dx.doi.org/10.1016/j.biortech.2020.123754DOI Listing
July 2020
4.494 Impact Factor

Impact of ozone pollution on nitrogen fertilization management during maize (Zea mays L.) production.

Environ Pollut 2020 Jul 3;266(Pt 2):115158. Epub 2020 Jul 3.

Institute of Ecology, Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China. Electronic address:

The impacts of ozone (O) on crops have been extensively studied and are well understood. However, little information is available on the response of crops (especially maize) to the interactive effects of O and nitrogen (N) fertilizer. To this end, a maize cultivar (Zheng dan 958, ZD958) that is common in China was exposed to two O treatments and four N levels. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.115158DOI Listing

Abundance and sources of benzo[a]pyrene and other PAHs in ambient air in Hong Kong: A review of 20-year measurements (1997-2016).

Chemosphere 2020 Jul 5;259:127518. Epub 2020 Jul 5.

Department of Chemistry and Division of Environment, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China; Division of Environment, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China. Electronic address:

The polycyclic aromatic hydrocarbon (PAH) family is of environmental concern due to its toxicity, prompting the need of monitoring their long-term trends. Three monitoring programs in Hong Kong report concentrations of ambient PAHs, namely (1) respirable suspending particle (RSP) speciation program that monitored benzo[a]pyrene (BaP) (1997 to March 2000), (2) total suspended particle speciation program that monitored BaP (1997-1999), and (3) toxic air pollutant monitoring program that monitors BaP and 16 other PAHs in the combined gas and particulate phases at two general urban stations once or twice a month since January 1998. In this work, we review all the available PAH measurements in Hong Kong during 1997-2016, with emphasis on the temporal trends of BaP and the other 16 PAHs. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127518DOI Listing

Lead removal from water by a newly isolated Geotrichum candidum LG-8 from Tibet kefir milk and its mechanism.

Chemosphere 2020 Jul 1;259:127507. Epub 2020 Jul 1.

College of Food Science and Technology, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, China. Electronic address:

In this study, a yeast-like fungal strain (LG-8), newly isolated from spontaneous Tibet kefir in China, was identified as Geotrichum candidum on the basis of its morphological characteristics and ITS5.8S gene sequence. Interestingly, the strain was able to remove more than 99% of Pb ions in water at low concentrations and a maximum of 325. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127507DOI Listing

The use of fecal microbiota transplant in sepsis.

Transl Res 2020 Jul 7. Epub 2020 Jul 7.

Section of General Surgery, Department of Surgery, University of Chicago, Chicago, IL, USA. Electronic address:

Sepsis is defined as a dysregulated inflammatory response, which ultimately results from a perturbed interaction of both an altered immune system and the biomass and virulence of involved pathogens.  This response has been tied to the intestinal microbiota, as the microbiota and its associated metabolites play an essential role in regulating the host immune response to infection.  In turn, critical illness as well as necessary healthcare treatments result in a collapse of the intestinal microbiota diversity and a subsequent loss of health-promoting short chain fatty acids, such as butyrate, leading to the development of a maladaptive pathobiome. Read More

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http://dx.doi.org/10.1016/j.trsl.2020.07.002DOI Listing

Amino Assets: How Amino Acids Support Immunity.

Cell Metab 2020 Jul 2. Epub 2020 Jul 2.

Max Planck Institute for Immunobiology and Epigenetics, Freiburg 79108, Germany. Electronic address:

Amino acids are fundamental building blocks supporting life. Their role in protein synthesis is well defined, but they contribute to a host of other intracellular metabolic pathways, including ATP generation, nucleotide synthesis, and redox balance, to support cellular and organismal function. Immune cells critically depend on such pathways to acquire energy and biomass and to reprogram their metabolism upon activation to support growth, proliferation, and effector functions. Read More

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http://dx.doi.org/10.1016/j.cmet.2020.06.010DOI Listing

Nitrogen enrichment stimulates wetland plant responses whereas salt amendments alter sediment microbial communities and biogeochemical responses.

PLoS One 2020 10;15(7):e0235225. Epub 2020 Jul 10.

Department of Natural Resources, University of Connecticut, Storrs, Connecticut, United States of America.

Freshwater wetlands of the temperate north are exposed to a range of pollutants that may alter their function, including nitrogen (N)-rich agricultural and urban runoff, seawater intrusion, and road salt contamination, though it is largely unknown how these drivers of change interact with the vegetation to affect wetland carbon (C) fluxes and microbial communities. We implemented a full factorial mesocosm (378.5 L tanks) experiment investigating C-related responses to three common wetland plants of eastern North America (Phragmites australis, Spartina pectinata, Typha latifolia), and four water quality treatments (fresh water control, N, road salt, sea salt). Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0235225PLOS

Inducible expression systems based on xenogeneic silencing and counter-silencing and design of a metabolic toggle switch.

ACS Synth Biol 2020 Jul 10. Epub 2020 Jul 10.

Inducible expression systems represent key modules in regulatory circuit design and metabolic engineering approaches. However, established systems are often limited in terms of applications due to high background expression levels and inducer toxicity. In bacteria, xenogeneic silencing (XS) proteins are involved in the tight control of horizontally acquired, AT-rich DNA. Read More

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http://dx.doi.org/10.1021/acssynbio.0c00111DOI Listing

A microalgal-based preparation with synergistic cellulolytic and detoxifying action towards chemical-treated lignocellulose.

Plant Biotechnol J 2020 Jul 10. Epub 2020 Jul 10.

Dipartimento di Biotecnologie, Università di Verona, Strada Le Grazie 15, 37134, Verona, Italy.

High-temperature bioconversion of lignocellulose into fermentable sugars has drawn attention for efficient production of renewable chemicals and biofuels, because competing microbial activities are inhibited at elevated temperatures and thermostable cell wall degrading enzymes are superior to mesophilic enzymes. Here, we report on the development of a platform to produce four different thermostable cell wall degrading enzymes in the chloroplast of Chlamydomonas reinhardtii. The enzyme blend was composed by the cellobiohydrolase CBM3GH5 from C. Read More

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http://dx.doi.org/10.1111/pbi.13447DOI Listing

Genome-scale modelling for Bacillus coagulans to understand metabolic characteristics.

Biotechnol Bioeng 2020 Jul 10. Epub 2020 Jul 10.

State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China.

Lactic acid is widely used in many industries especially the production of poly-lactic acid. Bacillus coagulans is a promising lactic acid producer in industrial fermentation due to its thermophilic property. In this study, we developed the first genome-scale metabolic model (GEM) of B. Read More

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http://dx.doi.org/10.1002/bit.27488DOI Listing

Bioproduction of α-terpineol and R-(+)-limonene derivatives by terpene-tolerant ascomycete fungus as a potential contribution to the citrus value chain.

J Appl Microbiol 2020 Jul 9. Epub 2020 Jul 9.

Laboratorio de Biotecnología Molecular, Instituto de Biotecnología Misiones "Dra. María Ebe Reca", CONICET, Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones, Posadas (CP3300), Misiones, Argentina.

Aims: The aims of this article were to select fungal species with high tolerance and high growth rate in mediums supplemented with limonene and citrus essential oils, and to test the bioconversion capability of the chosen isolates for the bioproduction of aroma compounds.

Methods And Results: Based on the use of predictive mycology, 21 of 29 isolates were selected after assaying R-(+)-limonene and Citrus Essential Oils tolerance (10 g L ). With a dendrogram divisive coefficient of 0. Read More

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http://dx.doi.org/10.1111/jam.14777DOI Listing

Phenotypic and physiological responses to salt exposure in Sorghum reveal diversity among domesticated landraces.

Am J Bot 2020 Jul 9. Epub 2020 Jul 9.

Department of Biology, West Virginia University, Morgantown, WV, 265052, USA.

Premise: Soil salinity negatively impacts plant function, development, and yield. To overcome this impediment to agricultural productivity, variation in morphological and physiological response to salinity among genotypes of important crops should be explored. Sorghum bicolor is a staple crop that has adapted to a variety of environmental conditions and contains a significant amount of standing genetic diversity, making it an exemplary species to study variation in salinity tolerance. Read More

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http://dx.doi.org/10.1002/ajb2.1506DOI Listing

Dispersal mitigates bacterial dominance over microalgal competitor in metacommunities.

Oecologia 2020 Jul 9. Epub 2020 Jul 9.

Marine Ecology, GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany.

Ecological theory suggests that a combination of local and regional factors regulate biodiversity and community functioning in metacommunities. The relative importance of different factors structuring communities likely changes over successional time, but to date this concept is scarcely documented. In addition, the few studies describing successional dynamics in metacommunity regulation have only focused on a single group of organisms. Read More

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http://dx.doi.org/10.1007/s00442-020-04707-8DOI Listing

Optimization of oxalic acid pre-treatment and enzymatic saccharification in Typha latifolia for production of reducing sugar.

J Genet Eng Biotechnol 2020 Jul 9;18(1):28. Epub 2020 Jul 9.

Department of Zoology, Bangalore University, Bengaluru, Karnataka, 560056, India.

Background: Plants with high biomass can be manipulated for their reducing sugar content which ultimately upon fermentation produces ethanol. This concept was used to enhance the production of reducing sugar from cattail (Typha latifolia) by oxalic acid (OAA) pre-treatment followed by enzymatic saccharification.

Result: The optimum condition of total reducing sugar released from OAA pre-treatment was found to be 22. Read More

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http://dx.doi.org/10.1186/s43141-020-00042-wDOI Listing

Optimization of prodigiosin biosynthesis by Serratia marcescens using unconventional bioresources.

J Genet Eng Biotechnol 2020 Jul 9;18(1):26. Epub 2020 Jul 9.

Department of Microbiology, K. J. Somaiya College of Science and Commerce, Mumbai, 400019, India.

Background: Prodigiosin is a naturally occurring red pigment by Serratia marcescens and having enormous medicinal properties. Recently, there is a need to develop a high-throughput and economically feasible bioprocess for the production of prodigiosin. In order to find a cost-effective alternative to individual fatty acids as substrate in industries, we tried to study the effect of different fatty acid containing oil seed cakes of peanut, sesame, and mustard as sources of substrate. Read More

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http://dx.doi.org/10.1186/s43141-020-00045-7DOI Listing

Molecular identification, biomass, and biochemical composition of the marine chlorophyte Chlorella sp. MF1 isolated from Suez Bay.

J Genet Eng Biotechnol 2020 Jul 9;18(1):27. Epub 2020 Jul 9.

Marine Environment Division, National Institute of Oceanography and Fisheries, Cairo, Egypt.

Background: An Egyptian indigenous unicellular green microalga was isolated from the coastal water of Suez Bay (N 29.92°, E 32.473°), Red Sea, Egypt. Read More

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http://dx.doi.org/10.1186/s43141-020-00044-8DOI Listing

Alterations in the phenylpropanoid pathway affect poplar ability for ectomycorrhizal colonisation and susceptibility to root-knot nematodes.

Mycorrhiza 2020 Jul 9. Epub 2020 Jul 9.

Laboratoire de Biotechnologie Végétale, Université libre de Bruxelles (ULB), Rue des Professeurs Jeener et Brachet 12, B-6041, Gosselies, Belgium.

This study investigates the impact of the alteration of the monolignol biosynthesis pathway on the establishment of the in vitro interaction of poplar roots either with a mutualistic ectomycorrhizal fungus or with a pathogenic root-knot nematode. Overall, the five studied transgenic lines downregulated for caffeoyl-CoA O-methyltransferase (CCoAOMT), caffeic acid O-methyltransferase (COMT), cinnamoyl-CoA reductase (CCR), cinnamyl alcohol dehydrogenase (CAD) or both COMT and CAD displayed a lower mycorrhizal colonisation percentage, indicating a lower ability for establishing mutualistic interaction than the wild-type. The susceptibility to root-knot nematode infection was variable in the five lines, and the CAD-deficient line was found to be less susceptible than the wild-type. Read More

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http://dx.doi.org/10.1007/s00572-020-00976-6DOI Listing

Elaboration of an algae-to-energy system and recovery of water and nutrients from municipal sewage.

Eng Life Sci 2020 Jul 16;20(7):305-315. Epub 2020 Jun 16.

Institute for Environmental Biotechnology (EBRU) Rhodes University Makhanda South Africa.

Increasing pressure is being exerted on the peri-urban space that has elevated the demand for electricity, affects the global water resource, and impacts the potential to produce food, fiber, and commodity products. Algae-based technologies and in particular algae-based sewage treatment provides an opportunity for recovery of water for recycle and re-use, sequestration of greenhouse gases, and generation of biomass. Successful coupling of municipal sewage treatment to an algae-to-energy facility depends largely on location, solar irradiance, and temperature to achieve meaningful value recovery. Read More

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http://dx.doi.org/10.1002/elsc.202000007DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7336153PMC

Biospeckle-characterization of hairy root cultures using laser speckle photometry.

Eng Life Sci 2020 Jul 2;20(7):287-295. Epub 2020 Jun 2.

Fraunhofer Institute for Ceramic Technologies and Systems IKTS Dresden Germany.

Monitoring is indispensable for the optimization and simulation of biotechnological processes. Hairy roots (hr, plant tissue cultures) are producers of valuable relevant secondary metabolites. The genetically stable cultures are characterized by a rapid filamentous growth, making monitoring difficult with standard methods. Read More

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http://dx.doi.org/10.1002/elsc.201900161DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7336145PMC

Selenium accumulation characteristics of () seedlings.

Physiol Mol Biol Plants 2020 Jul 22;26(7):1375-1383. Epub 2020 Jun 22.

College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan China.

A pot experiment was conducted to study the selenium (Se) accumulation characteristics and the tolerance of () seedlings under different soil Se concentrations. The 5 mg/kg soil Se concentration increased the seedling biomass and photosynthetic pigment contents (chlorophyll , chlorophyll , total chlorophyll, and carotenoid), whereas the other soil Se concentrations (10, 25, and 50 mg/kg) inhibited seedling growth. Increases in the soil Se concentrations tended to decrease the superoxide dismutase activity and soluble protein content, but had the opposite effect on the peroxidase and catalase activities. Read More

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http://dx.doi.org/10.1007/s12298-020-00838-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7326803PMC