%A R S Makkar
%A Swaranjit Singh Cameotra
%O Copyright of this article belongs to Springer Science.
%J Journal of Surfactants and Detergents
%T Synthesis of enhanced biosurfactant by Bacillus subtilis MTCC 2423 at 45?C by foam fractionation
%X fermentor was carried out using Bacillus subtilis
MTCC 2423 at 45?C. A good yield was obtained from sucrose
(2%) substrate fermentation by continuous removal of the
product by foam fractionation. The biosurfactant was recovered from collapsed foam by acid precipitation. The biosurfactant yield (4.5 g/L) was about 4.5 times higher than the yield (ca. 1 g/L) obtained by shake-flask fermentation. Surface activity of the collapsed foam was very high, and total surface activity was observed in the collapsed foam. The structural characterization
of this biosurfactant produced at 45?C by the strain used
in this study was recently reported. The biosurfactant was analyzed by thin-layer chromatography, infrared, 1H nuclear
magnetic resonance, and mass spectroscopy and was found
to be identical to surfactin, a lipopeptide surfactant.
%N 4
%K Bacillus, enhanced biosurfactant, foam fractionation,
surfactin, thermophilic.
%P 355-357
%V 4
%D 2001
%I Springer Science
%R doi:10.1007/s11743-001-0187-z
%L open875