Characterization and properties of the biosurfactant produced by PAH-degrading bacteria isolated from contaminated oily sludge environment

被引：68
作者：
Tripathi, Varsha [1 ]
Gaur, Vivek Kumar [1 ,2 ]
Dhiman, Nitesh [3 ,4 ]
Gautam, Krishna [1 ,4 ]
Manickam, Natesan [1 ]
机构：
[1] Vishvigyan Bhawan, Indian Inst Toxicol Res, CSIR, Environm Biotechnol Div,Environm Toxicol Grp, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
[2] Amity Univ Uttar Pradesh, Amity Inst Biotechnol, Lucknow Campus, Lucknow 226010, Uttar Pradesh, India
[3] Vishvigyan Bhawan, Indian Inst Toxicol Res, CSIR, Water Anal Lab,Nanomat Toxicol Grp, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
[4] Vishvigyan Bhawan, Indian Inst Toxicol Res, CSIR, Acad Sci & Innovat Res AcSIR, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2020年 / 27卷 / 22期
关键词：
Biosurfactant; Biodegradation; Emulsification; Crude oil; Rhamnolipid; Antibacterial; PSEUDOMONAS; DEGRADATION; BIODEGRADATION; BIOREMEDIATION; RHAMNOLIPIDS; HYDROCARBONS; EXTRACTION; REMOVAL; SOIL;
D O I：
10.1007/s11356-019-05591-3
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The aim of the present study was to investigate biosurfactant production ability of five different polyaromatic hydrocarbon (PAH)-metabolizing bacteria, such asOchrobactrum anthropiIITR07,Pseudomonas mendocinaIITR46,Microbacterium esteraromaticumIITR47,Pseudomonas aeruginosaIITR48, andStenotrophomonas maltophiliaIITR87. These bacteria showed biosurfactant production using 2% glucose as rich substrate; strain IITR47 yielded the highest with 906 and 534 mg/L biosurfactant in the presence of naphthalene and crude oil as the unique carbon sources.P. aeruginosaIITR48 showed the least surface tension at 29 N/m and the highest emulsification index at 63%. The biosurfactants produced were identified as glycolipid and rhamnolipid based on Fourier transform infrared spectroscopy analysis. In particular, the biosurfactant produced by bacteriaS. maltophiliaIITR87 efficiently emulsified mustard oil with an E24 value of 56%. It was observed that, all five biosurfactants from these degrader strains removed 2.4-, 1.7-, 0.9-, 3.8-, and 8.3-fold, respectively, crude oil from contaminated cotton cloth. Rhamnolipid derived from IITR87 was most efficient, exhibiting highest desorption of crude oil. These biosurfactants exhibited good stability without significantly losing its emulsification ability under extreme conditions, thus can be employed for bioremediation of PAHs from diverse contaminated ecosystem. Graphical
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页码：27268 / 27278
页数：11
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