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JSIR Vol.68 [2009] >
JSIR Vol.68(04) [April 2009] >
| Title: | Bioemulsifiers from marine microorganisms |
| Authors: | Nerurkar, Anuradha S
Hingurao, Krushi S
Suthar, Harish G |
| Keywords: | Acinetobacter calcoaceticus
Bioemulsifiers
Marine microorganisms |
| Issue Date: | 2009 |
| Abstract: | This review highlights bioemulsifier-producing marine microorganisms, which are capable of producing unique
metabolites having industrial applications. High molecular weight biosurfactants (bioemulsifiers) produce stable emulsions,
which allow bacteria to adhere strongly to hydrophobic surfaces and then degrade large biological complexes. Bioemulsifiers
are classified according to their hydrophile–lipophile balance (HLB); those having a low HLB are strong lipophiles and used
as water-in-oil emulsifiers, whereas those having a high HLB are strong hydrophiles and used as oil-in-water emulsifiers.
Acinetobacter calcoaceticus is the most promising marine microorganism used in diverse applications. In A. calcoaceticus
RAG-1, emulsification is brought about by production of an extracellular, polymeric bioemulsifier termed emulsan. Tropical
marine yeast, Yarrowia lipolytica NCIM 3589, produces emulsifier in the presence of alkanes or crude oil. Bioemulsifier
potential is mainly dependent on its chemical nature and hence its activity can be enhanced by simple media modification ormutagenesis. |
| Page(s): | 273-277 |
| ISSN: | 0022-4456 |
| Source: | JSIR Vol.68(04) [April 2009]
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