Aburuwaida, AS, Banat, Ibrahim, Haditirto, S, Salem, A and Kadri, M (1991) ISOLATION OF BIOSURFACTANT-PRODUCING BACTERIA PRODUCT CHARACTERIZATION, AND EVALUATION. ACTA BIOTECHNOLOGICA, 11 (4). pp. 315-324. [Journal article]
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A gram-positive, nonfermentative, rod-shaped bacterium designated St-5, identified as Rhodococcus, was isolated from Kuwait soil. Grown on hydrocarbon, such as kerosene and n-paraffin, the bacterium produced surface-active compounds (biosurfactants). Measurements of surface tension, critical micelle dilution and emulsifying activity indicated that the biosurfactant is produced as a primary metabolite. The ST-5 culture surface-active component is mainly glycolipid in nature. Whole-culture broth dropped surface tension to values below 27 mN/m and was stable during, exposure to high salinity (10% NaCl), elevated temperatures (120-degrees-C for 15 min) and a wide range of pH values. The culture broth was effective in recovering up to 86% of the residual oil from oil-saturated sand packs, indicating potential value in enhanced oil-recovery processes.
|Item Type:||Journal article|
|Faculties and Schools:||Faculty of Life and Health Sciences|
Faculty of Life and Health Sciences > School of Biomedical Sciences
|Research Institutes and Groups:||Biomedical Sciences Research Institute|
Biomedical Sciences Research Institute > Pharmaceutical Science and Practice
|Deposited By:||Professor Ibrahim Banat|
|Deposited On:||07 Jan 2010 19:22|
|Last Modified:||16 May 2012 14:33|
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