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Title: Bioemulsifier production by Streptomyces sp. S22 isolated from garden soil
Authors: Maniyar, Javed P
Doshi, Dhawal V
Bhuyan, Smita S
Mujumdar, Shilpa S
Keywords: Actinomycetes;Bioemulsifier;Emulsification activity;Surface tension;Streptomyces sp. S22
Issue Date: Apr-2011
Publisher: NISCAIR-CSIR, India
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°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.
Page(s): 293-297
ISSN: 0975-1009 (Online); 0019-5189 (Print)
Appears in Collections:IJEB Vol.49(04) [April 2011]

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