TY - JOUR
T1 - Isolation of Biosurfactant-Producing Bacteria Product Characterization, and Evaluation
AU - Aburuwaida, AS
AU - Banat, Ibrahim
AU - Haditirto, S
AU - Salem, A
AU - Kadri, M
PY - 1991
Y1 - 1991
N2 - 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.
AB - 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.
M3 - Article
VL - 11
SP - 315
EP - 324
JO - ACTA Biotechnologica
JF - ACTA Biotechnologica
SN - 0138-4988
IS - 4
ER -