Abstract：
:Dye dispersion and the interaction efficiency between azoreductases and dye molecules are rate-limiting steps for the decolorization of azo dyes. In this study, a biosurfactant-producing strain, Pseudomonas taiwanensis L1011, was isolated from crude oil. To increase the yield of the biosurfactant BS-L1011 from P. taiwanensis L1011, culture conditions were optimized including temperature, initial pH, carbon source, nitrogen source and C/N ratio. A maximum yield of 1.12g/L of BS-L1011 was obtained using D-mannitol as carbon source and yeast extract/urea as compound nitrogen source with C/N ratio of 10/4, pH 7.0 and 28°C. BS-L1011 exhibited a low critical micelle concentration (CMC) of 10.5mg/L and was able to reduce the surface tension of water to 25.8±0.1 mN/m. BS-L1011 was stable over a wide range of temperatures, pH values and salt concentrations. The biosurfactant is reported for the first time to accelerate chemical decolorization of Congo red by sodium hypochlorite, and biological decolorization of Amaranth by Bacillus circulans BWL1061, thus showing a potential in the treatment of dyeing wastewater.
journal_name
Ecotoxicol Environ Safjournal_title
Ecotoxicology and environmental safetyauthors
Liu C,You Y,Zhao R,Sun D,Zhang P,Jiang J,Zhu A,Liu Wdoi
10.1016/j.ecoenv.2017.07.012subject
Has Abstractpub_date
2017-11-01 00:00:00pages
8-15eissn
0147-6513issn
1090-2414pii
S0147-6513(17)30423-2journal_volume
145pub_type
杂志文章abstract：:Fenvalerate (FEN), a representative type II pyrethroid, is a widely used pyrethroid insecticide and a potential environmental contaminant. Several studies demonstrated that gestational FEN exposure induced intrauterine growth restriction (IUGR). However, the critical time window of FEN-induced fetal IUGR remains obscu...
journal_title：Ecotoxicology and environmental safety
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abstract：:A novel, green, facile and dual turn-off/on sensor for detection of Hg2+ and I- was developed based on carbon dots. Carbon dots were synthesized from citric acid, urea, and thiourea by microwave-assisted method. The size of the carbon dots (CDs) was about 10 nm and the synthesized CDs showed a strong emission at 523 n...
journal_title：Ecotoxicology and environmental safety
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abstract：:In situ bioassays are becoming very popular for laboratory test validation and field extrapolation. Natural conditions, including environmental variables, affect the "behavior" of contaminants and, consequently, their toxicity. This work aimed to develop protocols for in situ chronic bioassays with cladocerans and to ...
journal_title：Ecotoxicology and environmental safety
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doi：10.1006/eesa.2000.1926
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abstract：:Honeybees (Apis mellifera) play an important role in agriculture worldwide. Several factors including agrochemicals can affect honey bee health including habitat fragmentation, pesticide application, and pests. The growing human population and subsequent increasing crop production have led to widespread use of agroche...
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章,评审
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2017.07.016
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journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2015.03.016
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journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1006/eesa.1997.1579
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journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章,评审
doi：10.1006/eesa.1996.1502
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
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abstract：:The aim of the present study was to assess the physiological response of male zebrafish Danio rerio to the fungicide tebuconazole and recovery in fungicide-free water. Acute toxicity tests were carried out and the median lethal concentration (LC(50)) from 24 to 96 h was calculated. The fish were exposed to a sublethal...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
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journal_title：Ecotoxicology and environmental safety
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journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
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abstract：:A microcosm experiment was carried out to study the influence of cadmium and diesel, individually and in a mixture, on a free living nematode community of a Tunisian lagoon. Sediments were contaminated with cadmium that ranged in concentration from 0.54 to 1.40 mg Cd kg(-1) (dry weight (dw)), by diesel at 0.25 mg kg(-...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
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