title: Bioemulsifier production by Streptomyces sp. S22 isolated from garden soil.
abstract: Out of 45 actinomycetes isolated from garden soil, pond water and air; fifteen showed good emulsification activity. Streptomyces sp. S22 isolated from garden soil produced maximum bioemulsifier with 0.5% (v/v) sunflower oil during stationary phase at 37 degrees C, pH 6 and 250 rev/min. Emulsification activity was maximum (320 EU/ml) with sunflower oil as substrate. Partially purified bioemulsifier from Streptomyces sp. S22 was a peptidoglycolipid containing lipid (51.25%), protein (30%), non-reducing sugar (17.75%) and reducing sugar (1%). The yield of partially purified bioemulsifier was 1.6 g/l and reduced the surface tension of water by 23.09 mN/m. The bioemulsifier produced by Streptomyces sp. S22 was stable at room temperature for seven days.
authors: Department of Microbiology, Modern College of Arts, Science and Commerce, Shivajinagar, Pune 411 005, India.
authors: Javed P
authors: JP
authors: Maniyar
authors: Dhawal V
authors: DV
authors: Doshi
authors: Smita S
authors: SS
authors: Bhuyan
authors: Shilpa S
authors: SS
authors: Mujumdar