文章基本信息

标题：Exopolysaccharides of Marine Cyanobacterium NostocSpecies as a Biosurfactant
本地全文：下载
作者：C.S. Jeba Samuel ; Shreenidhi K.S
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2017
卷号：6
期号：1
页码：477
DOI：10.15680/IJIRSET.2017.0601087
出版社：S&S Publications
摘要：Offshore oil spills are a common occurrence in oceans. Approximately 706 million gallons of waste oilis spilled each year. Cyanobacterial cultures are available among which Nostoc sp. proves to fix more atmosphericnitrogen yielding more Exo Polysaccharides (EPS) and can serve as an effective biosurfactant. This economic-friendlycyanobacterium can be easily produced in large quantities. Nostoc, found in various environmentsforms colonies composed of filaments in a gelatinous sheath. Interestingly, biopolymers of marine cyanobacteriumcontain high concentrations of charged components, notably uronic acids useful for bioremediation purposes. FT-IRanalysis of Nostoc exhibited presence of more C and O thereby confirmed the presence of glycoplipids and thereforereducing the surface tension. In this paper, emuslification index of different oils were studied and the order ofemulsification was found to be Gingelly oil > Crude oil > Neem oil > Coconut oil > Brake oil > Petrol > Diesel oil.Thus, the extracted EPS can serve as an efficient biosurfactant for oil-spill cleaning and are eco-friendly too whichstands as a natural remediator better than the available commercial counterparts.
关键词：Cyanobacteria; biosurfactant; emulsification; FTIR; bioremediation; Exo Polysaccharides.