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Title: Production and antimicrobial property of glycolipid biosurfactants

item Solaiman, Daniel
item Ashby, Richard - Rick
item Zerkowski, Jonathan

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 4/1/2014
Publication Date: 5/4/2014
Citation: Solaiman, D., Ashby, R.D., Zerkowski, J.A. 2014. Production and antimicrobial property of glycolipid biosurfactants [abstract]. American Oil Chemists' Society Annual Meeting & Expo. p. 1.

Interpretive Summary:

Technical Abstract: Microbial glycolipids such as rhamnolipid (RL) and sophorolipid (SL) are an important class of biosurfactants with excellent surface tension-lowering activity. Besides their surfactant- and environment-friendly properties, however, additional value-added property such as bacteriocidal activity is needed to further heighten their commercial interests. We devised a straightforward production scheme and HPLC analysis method for synthesis and characterization of monorhamnolipid (R1L) and sophorolipid (SL) produced from patent-strain Pseudomonas chlororaphis NRRL B-30761 bacterium and Rhodotorula bogoriensis yeast, respectively. R1L and SL were then incorporated into biodegradable poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) films. Tests on acne-causing bacterium (i.e., Propionibacterium acnes) and on tomato-rotting causative agent (i.e., Pseudomonas corrugate) showed that these glycolipids possessed excellent antimicrobial activity. The finding adds to the antimicrobial spectrum of RL and SL, thus further increasing the potential commercial values of glycolipid biosurfactants.