期刊
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
卷 131, 期 1-3, 页码 880-886出版社
HUMANA PRESS INC
DOI: 10.1385/ABAB:131:1:880
关键词
biosurfactant; Rhodococcus; oil removal
The production of biosurfactant by Rhodococcus erythropolis during the growth on glycerol was investigated. The process was carried out at 28 degrees C in a 1.5-L bioreactor using glycerol as carbon source. The bioprocess was monitored through measurements of biosurfactant concentration and glycerol consumption. After 51 h of cultivation, 1.7 g/L of biosurfactant, surface, and interfacial tensions values (with n-hexadecane) of 43 and 15 mN/m, respectively, 67% of Emulsifying Index (E-24), and 94% of oil removal were obtained. The use of glycerol rather than what happens with hydrophobic carbon source allowed the release of the biosurfactant, originally associated to the cell wall.
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