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Production and characterization of ectoine by Marinococcus sp. ECT1 isolated from a high-salinity environment

Paper ID Volume ID Publish Year Pages File Format Full-Text
21489 43224 2011 7 PDF Available
Title
Production and characterization of ectoine by Marinococcus sp. ECT1 isolated from a high-salinity environment
Abstract

A halophilic bacterium isolated from a salt environment in southern Taiwan was identified as a Marinococcus sp. ECT1. This bacterium could synthesize and accumulate intracellular ectoine as a compatible solute capable of resisting osmotic stress in a hyper-osmotic environment. This study also developed a semi-synthesized medium (YAMS medium), capable of facilitating the growth of this Marinococcus sp. ECT1 with 600 mg/L crude ectoine production. Moreover, Marinococcus sp. ECT1 was grown on YAMS medium containing different initial yeast extract concentrations (CYE) (0 to 60 g/L) to demonstrate how CYE affects crude ectoine production. While the maximum cell concentration was increased by 23-fold when the CYE was 40 g/L, the maximum crude ectoine production reached 2.5 g/L when CYE was 40 g/L. In addition to demonstrating the success of the fermentation strategy of ectoine in increasing the production and production yield, experimental results further demonstrated that the fermentation medium of ectoine is highly promising for commercialization. Furthermore, the molecular weight and chemical structure of ectoine were identified and characterized by FAB-MS and 1H-NMR.

Keywords
Compatible solute; Ectoine; Halophilic bacterium; Marinococcus sp.; Osmotic stress
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Production and characterization of ectoine by Marinococcus sp. ECT1 isolated from a high-salinity environment
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 111, Issue 3, March 2011, Pages 336–342
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
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us