44,539 results match your criteria chemical industry

A new strategy for the development of efficient impedimetric tobramycin aptasensors with metallo-covalent organic frameworks (MCOFs).

Food Chem 2021 Jul 12;366:130575. Epub 2021 Jul 12.

College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, PR China. Electronic address:

Two bimetallic CoNi-based metallo-covalent organic frameworks (MCOFs) were prepared and explored as the sensitive platforms of impedimetric aptasensors for efficient detection of tobramycin (TOB). The two CoNi-MCOFs were constructed using metallophthalocyanine tetra-amine (MPc-TA, M = Co or Ni) and 4,4'-(1,10-phen-anthroline-2,9-diyl) dibenzaldehyde (PTD) as building units and further coordinating to the secondary metal ions (Ni or Co) by phenanthroline. Interestingly, the immobilization ability of CoPc-TA-PTD(Ni) to TOB-targeted aptamer is higher than that of NiPc-TA-PTD(Co) due to its stronger binding interactions to aptamer. Read More

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Investigating Endocrine Disrupting Properties of Chemicals in Fish and Amphibians: Opportunities to Apply the 3Rs.

Integr Environ Assess Manag 2021 Jul 22. Epub 2021 Jul 22.

Shell Health, Shell International B.V., Carel van Bylandtlaan 16, 2596 HR, The Hague, The Netherlands.

Many regulations are beginning to explicitly require investigation of a chemical's endocrine disrupting properties as a part of the safety assessment process, for substances already on or about to be placed on the market. Different jurisdictions are applying distinct approaches. However, all share a common theme requiring testing for endocrine activity and adverse effects, typically involving in vitro and in vivo assays on selected endocrine pathways. Read More

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Light-induced Nonoxidative Coupling of Methane using Stable Solid-Solutions.

Angew Chem Int Ed Engl 2021 Jul 22. Epub 2021 Jul 22.

Jilin University, Chemistry, 2699 Qianjin Street, 130012, Changchun, CHINA.

Achieving efficient and direct conversion of methane under mild conditions is of great significance to the innovation of the chemical industry. However, the efficiency and lifetime of most catalysts remain too far from the practical requirement, since it is difficult to break the first C-H bond of methane as well as to suppress the following complete dehydrogenation (or overoxidation) and the resulting carbonaceous deposition (or CO 2 ). Here, we report that wurtzite GaN:ZnO solid solutions exhibit unique and unprecedented photocatalytic performances for the nonoxidative coupling of methane at room temperature, exclusively generating ethane with nearly stoichiometric H 2 . Read More

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Rapid Highly-Efficient Digestion and Peptide Mapping of Adeno-Associated Viruses.

Anal Chem 2021 Jul 22. Epub 2021 Jul 22.

Barnett Institute of Chemical and Biological Analysis, Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States.

Adeno-associated viruses (AAVs) comprise an area of rapidly growing interest due to their ability to act as a gene delivery vehicle in novel gene therapy strategies and vaccine development. Peptide mapping is a common technique in the biopharmaceutical industry to confirm the correct sequence, product purity, post-translational modifications (PTMs), and stability. However, conventional peptide mapping is time-consuming and has proven difficult to reproduce with viral capsids because of their high structural stability and the suboptimal localization of trypsin cleavage sites in the AAV protein sequences. Read More

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Silicon compounds as stoichiometric coupling reagents for direct amidation.

Org Biomol Chem 2021 Jul 22. Epub 2021 Jul 22.

Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, UK.

Despite being one of the most frequently carried out chemical reactions in industry, there is currently no amidation protocol that is regarded as safe, high yielding, environmentally friendly and inexpensive. The direct amidation of a carboxylic acid with an amine is viewed as an inherently good solution for developing such a protocol. Since the 1960s, there has been a gradual development in the use of silicon reagents for direct amidation. Read More

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Bio-guided bioactive profiling and HPLC-DAD fingerprinting of Ukrainian saffron (Crocus sativus stigmas): moving from correlation toward causation.

BMC Complement Med Ther 2021 Jul 21;21(1):203. Epub 2021 Jul 21.

Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan.

Background: Saffron or stigmas of Crocus sativus L. is one of the most valuable food products with interesting health-promoting properties. C. Read More

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Research on accounting and detection of volatile organic compounds from a typical petroleum refinery in Hebei, North China.

Chemosphere 2021 Oct 11;281:130653. Epub 2021 May 11.

State Joint Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China.

A volatile organic compound (VOC) emissions inventory of the petroleum refinery in Hebei was established. This refinery emits 1859.2 tons of VOCs per year, with wastewater collection and treatment system being the largest emissions source, accounting for 59. Read More

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October 2021

Development of autotrophic and heterotrophic consortia via immobilized microbial beads for chemical wastewater treatment, using PTA wastewater as an approach.

Chemosphere 2021 Oct 26;281:131001. Epub 2021 May 26.

China Pharmaceutical University, Nanjing, 211198, China. Electronic address:

Studies on the symbiosis of microalgae-bacteria have been accelerating as a mean for wastewater remediation. However, there were few reports about the microalgae-bacteria consortia for chemical wastewater treatment. The aim of the present study is to develop an autotrophic and heterotrophic consortium for chemical wastewater treatment and probe whether and how bacteria could benefit from the microalgae during the treatment process, using PTA wastewater as an approach. Read More

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October 2021

Degradation of ramipril by residues from the brewing industry: A new carbon-based photocatalyst compound.

Chemosphere 2021 Oct 25;281:130987. Epub 2021 May 25.

Postgraduate Program in Environmental Engineering, Federal University of Santa Maria, Av. Roraima, 1000, 97105-900, Santa Maria, RS, Brazil.

This study is a pioneer in the use of hydrochar as a support for photocatalytic oxide and its application and evaluation as a catalyst in degradation reactions of ramipril. Novel composites were easily prepared by the support TiO or ZnO nanoparticles on the malt bagasse hydrochar. The preparation of the hydrochar requires low synthesis temperature (250 °C), generating the energy savings of the process. Read More

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October 2021

A review of okara (soybean curd residue) utilization as animal feed: Nutritive value and animal performance aspects.

Anim Sci J 2021 Dec;92(1):e13594

Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan.

Year by year, huge quantities of by-products are generated during the manufacturing process of soybean-based products. Okara is one of the by-products, and it is an insoluble portion of the soybean. It consists of high moisture (8. Read More

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December 2021

Quality control of Semen Hoveniae by HPLC coupled to Fourier transform-ion cyclotron resonance mass spectrometry.

J Sep Sci 2021 Jul 20. Epub 2021 Jul 20.

School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, 110016, P. R. China.

A method based on HPLC and Fourier transform-ion cyclotron resonance mass spectrometer was developed to control the quality of Semen Hoveniae. Firstly, the chromatographic fingerprint was established in combination with the chemometrics methods such as similarity analysis, cluster analysis, principal component analysis and orthogonal partial least squares discriminant analysis to discover the qualitative markers. Then, an HPLC-MS method was developed to identify the chemical constituents in Semen Hoveniae. Read More

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A Novel Tripyridinium-Triazine Molecule: Radicals Stabilization Enabling Reversible Multi-Electron Storage.

Angew Chem Int Ed Engl 2021 Jul 19. Epub 2021 Jul 19.

South China University of Technology, School of Chemistry and Chemical Engineering, 381 Wushan Road, 510641, Guangzhou, CHINA.

A novel organic molecule, 2,4,6-tris[1-(trimethylamonium)propyl-4-pyridiniumyl]-1,3,5-triazine hexachloride, is developed as a reversible six-electron storage electrolyte for aqueous redox flow battery (ARFB). Physicochemical characterizations reveal that the molecule evolves from radical to biradical and finally to quinoid structure upon accepting four electrons. Both the diffusion coefficient and the rate constant are found sufficiently high for running a flow battery with low concentration and kinetics polarization losses. Read More

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Benchtop NMR in Forensic Chemistry.

Magn Reson Chem 2021 Jul 19. Epub 2021 Jul 19.

Korimako Chemical Limited, Wellington, New Zealand.

NMR spectroscopy is a powerful technique well-known for its ability to elucidate structures, analyse mixtures and its quantitative nature. However, the cost and maintenance of high field NMR instruments prevents its widespread use by forensic chemists. The introduction of benchtop NMR spectrometers to the market operating at 40-80 MHz have a small footprint, are easy to use and cost much less than high field instruments which makes them well suited to meet the needs of forensic chemists. Read More

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Ni-Catalyzed C(sp)-H alkylation of -quinolylbenzamides using alkylsilyl peroxides as structurally diverse alkyl sources.

Chem Commun (Camb) 2021 Jul 20. Epub 2021 Jul 20.

Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan. and Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo, Kyoto 606-8501, Japan and School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.

A Ni-catalyzed direct C-H alkylation of N-quinolylbenzamides using alkylsilyl peroxides as alkyl-radical precursors is described. The reaction forms a new C(sp3)-C(sp2) bond via the selective cleavage of both C(sp3)-C(sp3) and C(sp2)-H bonds. This transformation shows a high functional-group tolerance and, due to the structural diversity of alkylsilyl peroxides, a wide range of alkyl chains including functional groups and complex structures can be introduced at the ortho-position of readily available N-quinolylbenzamide derivatives. Read More

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Assessment of physical and chemical properties, health risk of trace metals and quality indices of surface waters of the rivers and lakes of the Kola Peninsula (Murmansk Region, North-West Russia).

Environ Geochem Health 2021 Jul 20. Epub 2021 Jul 20.

N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Northern Dvina Emb. 23, Arkhangelsk, Russia, 163000.

The pollution of waterbodies with trace metals is of concern throughout the world due to their high toxicity. One of the main anthropogenic sources of trace metals entering natural waters is the mining and processing of minerals. Intensive development of the mining industry on the Kola Peninsula (the Murmansk region, Russia), exploration and development of new mineral resources have led to a sharp deterioration in the quality of surface waters of rivers and lakes. Read More

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Feature-based molecular networking for identification of organic micropollutants including metabolites by non-target analysis applied to riverbank filtration.

Anal Bioanal Chem 2021 Jul 20. Epub 2021 Jul 20.

Institute of Geology and Palaeontology - Applied Geology, University of Münster, Corrensstraße 24, 48149, Münster, Germany.

Due to growing concern about organic micropollutants and their transformation products (TP) in surface and drinking water, reliable identification of unknowns is required. Here, we demonstrate how non-target liquid chromatography (LC)-high-resolution tandem mass spectrometry (MS/MS) and the feature-based molecular networking (FBMN) workflow provide insight into water samples from four riverbank filtration sites with different redox conditions. First, FBMN prioritized and connected drinking water relevant and seasonally dependent compounds based on a modification-aware MS/MS cosine similarity. Read More

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Exploiting RNA thermometer-driven molecular bioprocess control as a concept for heterologous rhamnolipid production.

Sci Rep 2021 Jul 20;11(1):14802. Epub 2021 Jul 20.

Institute of Food Science and Biotechnology, Department of Bioprocess Engineering (150K), University of Hohenheim, Fruwirthstr. 12, 70599, Stuttgart, Germany.

A key challenge to advance the efficiency of bioprocesses is the uncoupling of biomass from product formation, as biomass represents a by-product that is in most cases difficult to recycle efficiently. Using the example of rhamnolipid biosurfactants, a temperature-sensitive heterologous production system under translation control of a fourU RNA thermometer from Salmonella was established to allow separating phases of preferred growth from product formation. Rhamnolipids as bulk chemicals represent a model system for future processes of industrial biotechnology and are therefore tied to the efficiency requirements in competition with the chemical industry. Read More

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A review on the environmental impact of phosphogypsum and potential health impacts through the release of nanoparticles.

Chemosphere 2021 Jul 9:131513. Epub 2021 Jul 9.

Department of Geological Sciences, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.

Many industrial by-products have been disposed along coastlines, generating profound marine changes. Phosphogypsum (PG) is a solid by-product generated in the production of phosphoric acid (PA) using conventional synthesis methods. The raw material, about 50 times more radioactive as compared to unperturbed soils, is dissolved in diluted sulfuric acid (70%) forming PG and PA. Read More

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Occupation and subcategories of asthma: a population-based incident case-control study.

Occup Environ Med 2021 Jul 19. Epub 2021 Jul 19.

Center for Environmental and Respiratory Health Research, Oulun yliopisto, Oulu, Finland.

Background: We hypothesised that occupational exposures differently affect subtypes of adult-onset asthma.

Objective: We investigated potential relations between occupation and three subtypes of adult asthma, namely atopic asthma, non-atopic asthma and asthma-COPD overlap syndrome (ACOS).

Methods: This is a population-based case-control study of incident asthma among working-age adults living in Pirkanmaa Hospital District in Southern Finland. Read More

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Processing and extraction methods of medicinal cannabis: a narrative review.

J Cannabis Res 2021 Jul 19;3(1):32. Epub 2021 Jul 19.

Drug Delivery Research Group, School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand.

Introduction: As the cannabis industry transitions from a black market to a legal market, product development, and methods of extraction have become a focal point. To date, more than thousands of chemical constituents have been identified from the cannabis plant, all of which possess different chemical properties that require different conditions for preservation during drying and extraction. However, scientific publications that explore these areas for the cannabis plant are currently lacking. Read More

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Algae-derived hydrocolloids in foods: applications and health-related issues.

Bioengineered 2021 Dec;12(1):3787-3801

Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan.

Hydrocolloids are a class of food additives with broad applications in the food industry to develop structure in food ingredients. Hydrocolloids can be synthetic, plant-based, or animal-based. Increasing consumer awareness has led to the use of natural food ingredients derived from natural sources, making algae-derived hydrocolloids more appealing nowadays. Read More

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December 2021

Ozone assisted autohydrolysis of wheat bran enhances xylooligosaccharide production with low generation of inhibitor compounds: A comparative study.

Bioresour Technol 2021 Jul 13;338:125559. Epub 2021 Jul 13.

Academy of Scientific and Innovative Research, Ghaziabad 201002, India; Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India. Electronic address:

In the present study, ozone assisted autohydrolysis (OAAH) was evaluated for enhanced generation of xylooligosaccharide (XOS) from wheat bran. The total XOS yield with optimum ozone dose of 3% (OAAH-3) was found to be 8.9% (w/w biomass) at 110 °C in comparison to 7. Read More

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Beneficial use of lime mud from kraft pulp industry for drying and microbiological decontamination of sewage sludge.

J Environ Manage 2021 Jul 16;296:113255. Epub 2021 Jul 16.

University of Coimbra, CIEPQPF, Department of Chemical Engineering, Rua Sílvio Lima, Pólo II, Pinhal de Marrocos, 3030-790, Coimbra, Portugal.

Sewage sludge (SS) is a global environmental, social, and economic problem that requires a sustainable management approach. Still, the production of other industrial wastes, such as lime mud (LM), has recently gained considerable attention to avoid landfilling. This work aims to present a new approach for converting SS and LM into value-added products within the circular economy perspective. Read More

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Monitorization of polyamide microplastics weathering using attenuated total reflectance and microreflectance infrared spectrometry.

Spectrochim Acta A Mol Biomol Spectrosc 2021 Jul 10;263:120162. Epub 2021 Jul 10.

Group of Applied Analytical Chemistry (QANAP) and Instituto Universitario de Medio Ambiente (IUMA), University of A Coruña, E-15071 A Coruña, Spain.

The EU goal to reduce marine plastic litter by ca. 30% by 2020 stressed the need to deploy analytical methods to ascertain the polymeric nature of a residue. Furthermore, as plastics age under natural conditions and usual databases do not include their weathered spectra, (micro)plastics in environmental samples may be unidentified. Read More

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Rapid and sensitive RPA-Cas12a-fluorescence assay for point-of-care detection of African swine fever virus.

PLoS One 2021 19;16(7):e0254815. Epub 2021 Jul 19.

Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China.

African swine fever (ASF) is a serious contagious disease that causes fatal haemorrhagic fever in domestic and wild pigs, with high morbidity. It has caused devastating damage to the swine industry worldwide, necessitating the focus of attention on detection of the ASF pathogen, the African swine fever virus (ASFV). In order to overcome the disadvantages of conventional diagnostic methods (e. Read More

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Advances on (+)-nootkatone microbial biosynthesis and its related enzymes.

J Ind Microbiol Biotechnol 2021 Jul 19. Epub 2021 Jul 19.

Key Laboratory of Environment Correlative Dietology, Ministry of Education, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.

(+)-Nootkatone is an important functional sesquiterpene and is comprehensively used in pharmaceutical, cosmetic, agricultural and food flavor industries. However, (+)-nootkatone is accumulated trace amounts in plants, and the demand for industry is mainly met by chemical methods which is harmful to the environment. The oxygen-containing sesquiterpenes prepared using microbial methods can be considered as 'natural'. Read More

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Effects of Green Tea Powder, Pomegranate Peel Powder, Epicatechin and Punicalagin Additives on Antimicrobial, Antioxidant Potential and Quality Properties of Raw Meatballs.

Tuğba Demir

Molecules 2021 Jul 2;26(13). Epub 2021 Jul 2.

Department of Food Hygiene and Technology, Faculty of Veterinary Medicine, Sivas Cumhuriyet University, Sivas 58040, Turkey.

Alternative technologies, which have been developed in order to meet the consumers' demand for nourishing and healthy meat and meat products, are followed by the food industry. In the present study, it was determined, using the HPLC method, that green tea contains a high level of epicatechin (EP) under optimal conditions and that pomegranate peel contains a high level of punicalagin (PN). Green tea, pomegranate peel, EP and PN were added to meatballs at different concentrations in eight groups. Read More

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Green Synthesis, Characterization, and Antibacterial Properties of Silver Nanoparticles Obtained by Using Diverse Varieties of Leaf Extracts.

Molecules 2021 Jul 1;26(13). Epub 2021 Jul 1.

Faculty of Food Engineering, Tourism and Environmental Protection, Institute for Research, Development and Innovation in Technical and Natural Sciences, Aurel Vlaicu University, 2 Elena Dragoi St., 310330 Arad, Romania.

L. (hemp) is a plant used in the textile industry and green building material industry, as well as for the phytoremediation of soil, medical treatments, and supplementary food products. The synergistic effect of terpenes, flavonoids, and cannabinoids in hemp extracts may mediate the biogenic synthesis of metal nanoparticles. Read More

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Valorization and Application of Fruit and Vegetable Wastes and By-Products for Food Packaging Materials.

Molecules 2021 Jul 1;26(13). Epub 2021 Jul 1.

Institute of Food Science and Human Nutrition, Department of Food Development and Food Quality, Gottfried Wilhelm Leibniz University Hannover, Am Kleinen Felde 30, 30167 Hannover, Germany.

The important roles of food packaging are food protection and preservation during processing, transportation, and storage. Food can be altered biologically, chemically, and physically if the packaging is unsuitable or mechanically damaged. Furthermore, packaging is an important marketing and communication tool to consumers. Read More

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Recycling of Wastes Plastics and Tires from Automotive Industry.

Polymers (Basel) 2021 Jul 3;13(13). Epub 2021 Jul 3.

Department of Environmental and Forestry Machinery, Faculty of Technology, Technical University in Zvolen, T. G. Masaryka 24, 960 01 Zvolen, Slovakia.

Waste tires (granulate) and selected plastics from the automotive industry were evaluated by using the tertiary (pyrolysis) and quaternary (calorimetry) recovering. Pyrolysis is proving to be an environmentally friendly alternative to incineration and inefficient landfilling. Currently, the main challenges for pyrolysis of plastic waste are unavailability and inconsistent quality of feedstock, inefficient and hence costly sorting, and last but not least insufficient regulations around plastic waste management. Read More

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