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2013 Volume 4 Issue 4

Isolation and characterization of yellow pigment producing Exiguobacterium sps.


Abstract
Thirteen yellow pigment producing bacterial strains were isolated by air and soil sampling method and screened for carotenoid production, as many of them exhibited a deep orange pigmentation when cultured on NA-plates. We found that most of them produced trace amount of carotenoids. The isolates RS7, RSS3, RS13 and RS14 had significant amounts of the yellow pigment producing ability (Degree of pigmentation 8.31, 2.72, 6.66 and 5.5). Free Radical Scavenging Activity of the extracts from the isolates were analyzed by DPPH (1, 1-Diphenly-2-picryl-hydrazil) method. Isolate RS7 showed maximum free radical scavenging activity (72%). HPLC result revealed that the isolated strains are the natural producer of Astaxanthin. Based on the Biochemical characterization and 16S rDNA gene sequencing analysis, out of the four isolates two of them (RS7 and RS13), were identified as Exiguobacterium aurantiacum and the other two isolates (RSS3 and RS14) as Exiguobacterium profundum.

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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 Sevas Publishing 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