title: De-emulsification of oil-in-water emulsions by Bacillus subtilis.
abstract: Bacillus subtilis grown on glucose produced a de-emulsifier that broke down model oil-in-water emulsions. The deemulsification increased with contact time and the recovery of oil was 98% with 0.6 mg de-emulsifier/ml emulsion. GLC and i.r. analysis of the molecule extracted from cell-free broth demonstrated that the de-emulsifier was acetoin. It may be better to use acetoin, a metabolite of glucose metabolism, to recover oil from oily sludges instead of microbial cells, because of its stability and de-emulsification activity.
authors.affiliation: , .
authors.forename: K L
authors.initials: KL
authors.lastname: Janiyani
authors.forename: H J
authors.initials: HJ
authors.lastname: Purohit
authors.forename: R
authors.initials: R
authors.lastname: Shanker
authors.forename: P
authors.initials: P
authors.lastname: Khanna