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2012 Volume 3 Issue 4

Improved production, characterization and flocculation properties of poly ()-glutamic acid produced from Bacillus Subtilis


Abstract
Bacillus subtilis 2063 produced extracellular biopolymer whichshowed excellent flocculation activity. The biopolymer wasconfirmed as poly (γ-glutamic acid) (PGA) by using productcharacterization. HPLC profile showed that molecular weight ofPGA was found to be 5.8×106 Da. Improved production,Characterization and flocculation properties of PGA produced byBacillus species were studied. PGA produced by B. subtilis wasdevoid of any polysaccharides. The flocculating activity wasmarkedly stimulated by the addition of cations. The pH of reaction mixture also influenced the flocculating activity. Glycerol and ammonium chloride were found to be most useful carbon and nitrogen sources. An overall 4.24-fold increase in protease production was achieved in the design medium composed with Glycerol and ammonium chloride as a carbon and nitrogen sources as compared with basal media. PGA production increased significantly with optimized medium (21.42 gl-1) when compared with basal medium (5.06 gl-1).

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JOURNAL OF BIOCHEMICAL TECHNOLOGY
JOURNAL OF BIOCHEMICAL TECHNOLOGY
Journal of Biochemical Technology is a double-blind peer reviewed International Journal published by the Deniz Publication on behalf of the Biochemical Technology Society, a Registered Charity Organization from India

AREA OF INTEREST
AREA OF INTEREST
new advances in enzymatic and protein mechanims; applied molecular genetics and biotechnology; genomics and proteomics; metabolic; medical, environmental, food and agro biotechnology.

FOCUS AND SCOPE
FOCUS AND SCOPE
Journal Of Biochemical Technology Provides A Medium For The Rapid Publication Of Full-Length Articles, Mini-Reviews Of New And Emerging Products And Short Communications On All Aspects Of ...

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This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge. Keywords include, Biochemical Research: Endo/exocytosis, Trafficking, Membrane Biology, Cell Migration, Cell-Matrix Organelle Biogenesis, Cytoskeleton Proteolysis, Cell Death, Cell Cycle, Cancer, Cell Growth/Death, Differentiation, Drug Targets, Gene Therapy, Models of Disease, Proteomics, Stem Cells, Bioenergetics, Mitochondria, Free Radicals, Redox Signaling, Ion Transport/Channels, Oxidative