Production and characterization of a group of bioemulsifiers from the marine Bacillus velezensis strain H3
文献类型：期刊论文
| 作者 | Liu, XY ; Ren, BA ; Chen, M ; Wang, HB ; Kokare, CR ; Zhou, XL ; Wang, JD ; Dai, HQ ; Song, FH ; Liu, M ; Wang, JA ; Wang, SJ ; Zhang, LX |
| 刊名 | APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
 |
| 出版日期 | 2010 |
| 卷号 | 87期号:5页码:1881-1893 |
| 关键词 | Bacillus velezensis Biosurfactant Lipopeptide Surfactin Bioemulsifier |
| ISSN号 | 0175-7598 |
| 通讯作者 | zhanglixin@im.ac.cn |
| 中文摘要 | Marine microbes are a rich source of bioactive compounds, such as drugs, enzymes, and biosurfactants. To explore the bioactive compounds from our marine natural product library, an oil emulsification assay was applied to discover biosurfactants and bioemulsifiers. A spore-forming bacterial strain from sea mud was found to produce bioemulsifiers with good biosurfactant activity and a broad spectrum of antimicrobial properties. It was identified as Bacillus velezensis H3 using genomic and phenotypic data analysis. This strain was able to produce biosurfactants with an optimum emulsification activity at pH 6.0 and 2% NaCl by using starch as the carbon source and ammonium sulfate as the nitrogen source. The emulsification-guided isolation and purification procedure led to the discovery of the biosurfactant components, which were mainly composed of nC(14)-surfactin and anteisoC(15)-surfactin as determined by NMR and MS spectra. These compounds can reduce the surface tension of phosphate-buffered saline (PBS) from 71.8 to 24.8 mN/m. The critical micelle concentrations (CMCs) of C-14-surfactin and C-15-surfactin in 0.1 M PBS (pH 8.0) were determined to be 3.06 x 10(-5) and 2.03 x 10(-5) mol/L, respectively. The surface tension values at CMCs for C-14-surfactin and C-15-surfactin were 25.7 and 27.0 mM/m, respectively. In addition, the H3 biosurfactant exhibited antimicrobial activities against Staphyloccocus aureus, Mycobacterium, Klebsiella peneumoniae, Pseudomonas aeruginosa, and Candida albicans. Thus B. velezensis H3 is an alternative surfactin producer with potential application as an industrial strain for the lipopeptide production. |
| 学科主题 | Biotechnology & Applied Microbiology |
| 收录类别 | SCI |
| 原文出处 | SPRINGER |
| WOS记录号 | WOS:000280036300030 |
| 公开日期 | 2011-07-03 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/5424]  |
| 专题 | 南海海洋研究所_海洋生物 |
| 推荐引用方式 GB/T 7714 | Liu, XY,Ren, BA,Chen, M,et al. Production and characterization of a group of bioemulsifiers from the marine Bacillus velezensis strain H3[J]. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY,2010,87(5):1881-1893. |
| APA | Liu, XY.,Ren, BA.,Chen, M.,Wang, HB.,Kokare, CR.,...&Zhang, LX.(2010).Production and characterization of a group of bioemulsifiers from the marine Bacillus velezensis strain H3.APPLIED MICROBIOLOGY AND BIOTECHNOLOGY,87(5),1881-1893. |
| MLA | Liu, XY,et al."Production and characterization of a group of bioemulsifiers from the marine Bacillus velezensis strain H3".APPLIED MICROBIOLOGY AND BIOTECHNOLOGY 87.5(2010):1881-1893. |
入库方式： OAI收割
来源：南海海洋研究所
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