文献类型：期刊文献

英文题名：A new biosurfactant-producing strain, Fictibacillus nanhaiensis ME46, isolated from an oil field in China

作者：Li, Jia-Yi[1,2,6,7];Liu, Yi-Fan[1,2,3];Zhou, Lei[1,2,3];Gang, Hong-Ze[1,2,3];Liu, Jin-Feng[1,2,4];Sun, Gang-Zheng[5];Wang, Wei-Dong[5];Yang, Shi-Zhong[1,2,3,6,7];Mu, Bo-Zhong[1,2,3]

机构：[1]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, Engn Res Ctr Microbial Enhanced Oil Recovery MEOR, Shanghai, Peoples R China;[4]Daqing Huali Biotechnol Co Ltd, Daqing, Peoples R China;[5]Sinopec, Shengli Oilfield Co, Res Inst Petr Engn & Technol, Dongying, Peoples R China;[6]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[7]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：45

期号：20

起止页码：4089

外文期刊名：ENVIRONMENTAL TECHNOLOGY

收录：;EI(收录号：20233614663974);WOS:【SCI-EXPANDED(收录号:WOS:001064581400001)】；

基金：The authors thank the Research Programme of the State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, for providing facilities and financial support. The authors are also thankful to the School of Chemistry and Molecular Engineering, East China University of Science and Technology.

语种：英文

外文关键词：Biosurfactant; surfactin; endospore-forming bacteria; Fictibacillus nanhaiensis

摘要：The genus Fictibacillus contains twelve species significant in the synthesis of cellulose-degrading enzymes and phenylalanine dehydrogenase, isolated mainly from marine sedimentary environments. Here, we report a new biosurfactant-producing strain, Fictibacillus nanhaiensis ME46, isolated from Daqing oil field in China. The biosurfactant extracted from Strain ME46 was determined as surfactin, one of the representative families of lipopeptide biosurfactants. The yield of the surfactin produced by strain ME46 was 0.62 g & BULL;L-1 as determined by high-performance liquid chromatography, and the critical micelle concentration (CMC) of the surfactin was estimated to be about 68 mg & BULL;L-1 and the surface tension at CMC was 35.1 mN & BULL;m(-1). This study extended our knowledge about the role of the species Fictibacillus nanhaiensis in the ecosystem of natural environments such as the oil field.