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Characterization of water-soluble dark-brown pigment from Antarctic bacterium, Lysobacter oligotrophicus

Paper ID Volume ID Publish Year Pages File Format Full-Text
20269 43166 2015 4 PDF Available
Title
Characterization of water-soluble dark-brown pigment from Antarctic bacterium, Lysobacter oligotrophicus
Abstract

Lysobacter oligotrophicus strain 107-E2T isolated from Antarctica produces dark-brown colored water-soluble pigment, in addition to hydrolases and lytic enzymes. The production of pigment is a common characteristic among members of the genus Lysobacter, but the identity of the pigments has been unknown. In this study, we identified the pigment from L. oligotrophicus as melanin pigment (Lo-melanin) by chemical and spectroscopic analyses. Although melanin is generally insoluble in both aqueous and organic solvents, the results in this study revealed that Lo-melanin shows water-solubility by means of the added polysaccharide chain. Lo-melanin production of L. oligotrophicus was increased by ultraviolet (UV) exposure, and survival rate of Escherichia coli under UV-irradiated condition was increased by the addition of Lo-melanin to the medium.

Keywords
Antarctic; Melanin; Microbial product; Macromolecular structure; UV-protection
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Characterization of water-soluble dark-brown pigment from Antarctic bacterium, Lysobacter oligotrophicus
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 120, Issue 1, July 2015, Pages 58–61
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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