TY  - JOUR
ID  - open769
UR  - http://dx.doi.org/10.1038/sj.jim.2900349
IS  - 1
A1  - Makkar, R S
A1  - Cameotra, Swaranjit Singh
N2  - A strain of Bacillus subtilis was able to grow and produce a biosurfactant on 2% sucrose at 45°C. As a result of biosurfactant synthesis the surface tension of the medium was reduced from 68 dynes cm?1 to 28 dynes cm?1. The strain had the capacity to produce the biosurfactant at high NaCl concentrations (4%) and a wide range of pH (4.5?10.5). The biosurfactant retained its surface-active properties after heating at 100°C for 2?h and at different pH values (4.5?10.5). A maximum amount of biosurfactant was produced when urea or nitrate ions were supplied as nitrogen source. The use of the biosurfactant at high temperatures, acidic, alkaline and saline environments is discussed. As a result of its action, 62% of oil in a sand pack column could be recovered, indicating its potential application in microbiologically enhanced oil recovery. 
VL  - 18
TI  - Biosurfactant production by a thermophilic Bacillus subtilis strain.
AV  - restricted
EP  - 42
N1  - Copyright of tgis article belongs to Springer Science.
Y1  - 1997///
PB  - Springer Science
JF  - Journal of Industrial Microbiology and Biotechnology
KW  - biosurfactant; thermophilic; Bacillus subtilis; MEOR
SN  - 1367-5435
SP  - 37
ER  -