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- Author:
- Ekaterina I. Kovaleva; M. V. Guchok; V. A. Terekhova; V. V. Demin; S. Ya. Trofimov
- Source:
- Journal of soils and sediments 2021 v.21 no.5 pp. 1974-1988
- ISSN:
- 1439-0108
- Subject:
- Paramecium; atmospheric precipitation; atomic absorption spectrometry; barley; biomass; cement; diatomaceous earth; gas chromatography; liquid chromatography; oats; oils; pH; peat; petroleum; phosphogypsum; sand; toxicity
- Abstract:
- ... PURPOSE: The disposal of drill cuttings (DCs) in landfills is one of the major impacts of oil extraction on the environment. The DC composition is predetermined by the type of drilling fluid and can include petroleum hydrocarbons (PHCs), salts, and metals. Designing effective approaches to DC recycling is a key problem. We propose the use of certain additives to reduce the toxicity of DC mixtures ...
- DOI:
- 10.1007/s11368-020-02787-w
- https://doi.org/10.1007/s11368-020-02787-w
- Author:
- Sirawee Maneewan; Preuk Tangpromphan; Attasak Jaree
- Source:
- Waste and biomass valorization 2021 v.12 no.12 pp. 6601-6618
- ISSN:
- 1877-2641
- Subject:
- adsorption; biomass; dietary supplements; liquid chromatography; mung beans; response surface methodology; solvents; toxicity; wastes
- Abstract:
- ... Vitexin and iso-vitexin, potential bioactive compounds for nutraceutical or pharmaceutical applications, are natural phenolic compounds present in mung bean seed coats. These compounds could be extracted using ethanol-based solvent. Improving the purity of vitexin and iso-vitexin in the crude extract is important for efficient use. This work proposed a continuous system for the separation of vitex ...
- DOI:
- 10.1007/s12649-021-01493-z
- https://doi.org/10.1007/s12649-021-01493-z
- Author:
- Yuanyuan Peng; Wenhua Tong; Yi Xie; Wanrong Hu; Yonghong Li; Yongkui Zhang; Yabo Wang
- Source:
- Environmental pollution 2021 v.268 pp. 115930
- ISSN:
- 0269-7491
- Subject:
- antibiotics; biomass; carbon; catalysts; catalytic activity; cobalt; ecotoxicology; heat treatment; liquid chromatography; mass spectrometry; oxidation; pH; phosphides; pollution; pyrolysis; risk; sulfamethoxazole; toxicity
- Abstract:
- ... Advanced oxidation processes (AOPs) based on peroxymonosulfate (PMS) activation have attracted increasing attention in recent years for organic pollutants removal. Herein, we put forward a facile method to form cobalt phosphide/carbon composite for PMS activation. Combining impregnation approach with pyrolysis treatment enabled the formation of Co₂P/biochar composites using baker’s yeast and Co²⁺ ...
- DOI:
- 10.1016/j.envpol.2020.115930
- https://doi.org/10.1016/j.envpol.2020.115930
- Author:
- Joselito P. Quirino; Fernando Maya Alejandro; Alex C. Bissember
- Source:
- Journal of cleaner production 2020 v.253 pp. 119937
- ISSN:
- 0959-6526
- Subject:
- biomass; carbohydrates; green chemistry; humans; lignin; lipids; liquid chromatography; product development; proteins; recycling; solvents; toxicity; wastes
- Abstract:
- ... Activity in the area of biomass waste valorization had focused on upstream processes that enabled access to target compounds (i.e., complex carbohydrates, lignins, lipids, and proteins) from biomass waste. There had been less activity in the downstream processes that typically incorporate separation steps to deliver commercial products that satisfy chemical specifications. Tougher specifications ( ...
- DOI:
- 10.1016/j.jclepro.2019.119937
- https://doi.org/10.1016/j.jclepro.2019.119937
5. Effects of arginine on the growth and microcystin-LR production of Microcystis aeruginosa in culture
- Author:
- Ruihua Dai; Yanping Zhou; Yanan Chen; Xufeng Zhang; Yangwei Yan; Dong An
- Source:
- Science of the total environment 2019 v.651 pp. 706-712
- ISSN:
- 0048-9697
- Subject:
- Microcystis aeruginosa; arginine; biomass; biosynthesis; drinking water; ecology; free amino acids; liquid chromatography; microcystin-LR; molecular weight; nitrogen; nitrogen content; pollution load; risk; stable isotopes; tandem mass spectrometry; toxicity
- Abstract:
- ... Although toxic cyanobacterial blooms and their toxins threaten drinking water and ecology and are promoted by nutrient loading, the precise nutrient regime that increases cyanobacterial populations and toxin production is poorly understood. Here, the influences of arginine (Arg), as a common amino acid with high nitrogen content, on the growth and microcystins (MCs) production of Microcystis aerug ...
- DOI:
- 10.1016/j.scitotenv.2018.09.213
- https://doi.org/10.1016/j.scitotenv.2018.09.213
- Author:
- Isabelle Rajotte; Cheryl Rafuse; Elliott J. Wright; John C. Achenbach; Lee D. Ellis; Pearse McCarron
- Source:
- Journal of natural products 2019 v.82 no.7 pp. 1945-1952
- ISSN:
- 1520-6025
- Subject:
- Danio rerio; Gonyaulax; biomass; hydroxylation; liquid chromatography; mass spectrometry; nuclear magnetic resonance spectroscopy; solvents; toxicity; yessotoxin
- Abstract:
- ... Liquid chromatography–high-resolution mass spectrometry (LC-HRMS) analysis of a Namibian strain of Gonyaulax spinifera showed the presence of a number of yessotoxins (YTXs). Principal among these were YTX (1), homoYTX (2), and a tentative hydroxylated analogue that did not correspond to any previously confirmed YTX structures. Culturing the G. spinifera strain afforded sufficient biomass for purif ...
- DOI:
- 10.1021/acs.jnatprod.9b00318
- https://doi.org/10.1021/acs.jnatprod.9b00318
- Author:
- Sharmin Suraiya; Jang-Ho Kim; Jin Yeong Tak; Mahbubul Pratik Siddique; Cho Ja Young; Joong Kyun Kim; In-Soo Kong
- Source:
- Lebensmittel-Wissenschaft + Technologie 2018 v.92 pp. 1-9
- ISSN:
- 0023-6438
- Subject:
- Monascus purpureus; Saccharina japonica; biomass; enzyme activity; enzyme inhibition; fermentation; food industry; glucose; human cell lines; liquid chromatography; lovastatin; molecular weight; peptones; pharmaceutical industry; response surface methodology; sterol esterase; superoxide dismutase; tandem mass spectrometry; temperature; thermal stability; toxicity
- Abstract:
- ... In this study, Saccharina japonica (brown seaweed) was fermented in solid state by Monascus purpureus to maximize lovastatin production, the response surface methodology (RSM) was applied to optimize four different fermentation parameters: temperature (25−35 °C), time (10−20 days), glucose (0.1–1.5%) and peptone (0.1–0.7%) concentration. The predicted combination of process parameters yielding the ...
- DOI:
- 10.1016/j.lwt.2018.02.013
- https://doi.org/10.1016/j.lwt.2018.02.013
- Author:
- Deon C. Louw; Gregory J. Doucette; Nina Lundholm
- Source:
- Harmful algae 2018 v.75 pp. 118-128
- ISSN:
- 1568-9883
- Subject:
- Bacillariophyceae; algal blooms; biomass; birds; case studies; coasts; digestive system; domoic acid; liquid chromatography; marine ecosystems; monitoring; mortality; phytoplankton; poisonous algae; sardines; seawater; tandem mass spectrometry; toxicity; ultrastructure; Namibia
- Abstract:
- ... The Benguela upwelling system, considered the world’s most productive marine ecosystem, has a long record of potentially toxic diatoms belonging to the genus Pseudo-nitzschia. Species of Pseudo-nitzschia were reported as early as 1936 from the northern Benguela upwelling system (nBUS). For the current study, long-term phytoplankton monitoring data (2004–2011) for the Namibian coast were analysed t ...
- DOI:
- 10.1016/j.hal.2018.04.008
- https://doi.org/10.1016/j.hal.2018.04.008
9. Lipids of Dietzia sp. A14101. Part I: A study of the production dynamics of surface-active compounds
- Author:
- Ina Hvidsten; Svein Are Mjøs; Bjarte Holmelid; Gunhild Bødtker; Tanja Barth
- Source:
- Chemistry and physics of lipids 2017 v.208 pp. 19-30
- ISSN:
- 0009-3084
- Subject:
- DNA; Dietzia; Gram-positive bacteria; active ingredients; biomass; biosynthesis; developmental stages; emulsifying; fatty acid composition; gas chromatography-mass spectrometry; glycolipids; hydrocarbons; hydrophilicity; hydrophobicity; lipid content; liquid chromatography; models; oil fields; physical properties; surface tension; toxicity; triacylglycerols
- Abstract:
- ... Dietzia sp. A14101 belonging to the genus Dietzia (Gram-positive bacteria, Actinomycetes, high G+C content of DNA) was isolated from an oil reservoir model column inoculated with oil-field bacteria (Bødtker et al., 2009). Low interfacial tension (IFT) values were obtained by studying intact strain cells grown on water-immiscible hydrocarbons (HC) (Kowalewski et al. (2004), Kowalewski et al. (2005) ...
- DOI:
- 10.1016/j.chemphyslip.2017.08.006
- https://doi.org/10.1016/j.chemphyslip.2017.08.006
- Author:
- Andrea Ziková; Claudia Lorenz; Ilka Lutz; Stephan Pflugmacher; Werner Kloas
- Source:
- Aquatic toxicology 2013 v.128-129 pp. 25-33
- ISSN:
- 0166-445X
- Subject:
- Cyanobacteria; Xenopus laevis; amphibians; bioaccumulation; biomarkers; biomass; biotransformation; diet; enzymes; fish; follicle-stimulating hormone; gene expression; heat stress; liquid chromatography; luteinization; luteinizing hormone; mass spectrometry; messenger RNA; metamorphosis; microcystin-LR; mortality; oxidative stress; physiological response; secondary metabolites; tadpoles; thyrotropin
- Abstract:
- ... Cyanobacteria are the primary biomass producers and some species synthesize remarkable amounts of secondary metabolites, the so-called cyanotoxins. Several reports deal with the most common cyanotoxins, microcystins (MCs), and their effects on fishes but only a few studies investigated a natural exposure to MCs and limited information is available concerning the further aquatic vertebrate class, a ...
- DOI:
- 10.1016/j.aquatox.2012.11.004
- PubMed:
- 23266398
- https://doi.org/10.1016/j.aquatox.2012.11.004
11. A Rapid Two-Step Bioremediation of the Anthraquinone Dye, Reactive Blue 4 by a Marine-Derived Fungus
- Author:
- Ashutosh Kumar Verma; Chandralata Raghukumar; Rajesh Ramnath Parvatkar; Chandrakant Govind Naik
- Source:
- Water, air, and soil pollution 2012 v.223 no.6 pp. 3499-3509
- ISSN:
- 0049-6979
- Subject:
- Fourier transform infrared spectroscopy; acids; anthraquinones; biodegradation; biomass; bioremediation; carbon; chemical oxygen demand; color; decolorization; dyes; laccase; liquid chromatography; marine fungi; mass spectrometry; metabolites; mineralization; molecular weight; phenolic compounds; rapid methods; sorption; toxicity; ultraviolet-visible spectroscopy
- Abstract:
- ... A rapid two-step technique for bioremediation of the anthraquinone dye, the Reactive Blue 4 (RB4) by a marine-derived fungus is reported here. In the first step, 1,000 mg l−1 of this dye treated with partially purified laccase of this fungus resulted in 61 % color removal and twofold decrease in chemical oxygen demand by 12 h. The metabolites formed during the enzymatic degradation were characteri ...
- DOI:
- 10.1007/s11270-012-1127-3
- https://doi.org/10.1007/s11270-012-1127-3