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Effects of dissolved oxygen concentration and two-stage oxygen supply strategy on the production of γ-CGTase by Bacillus macorous

Paper ID Volume ID Publish Year Pages File Format Full-Text
36502 45134 2005 6 PDF Available
Title
Effects of dissolved oxygen concentration and two-stage oxygen supply strategy on the production of γ-CGTase by Bacillus macorous
Abstract

The effects of different agitation speeds and DO concentrations on γ-CGTase production by Bacillus macorous WSH02-06 were investigated. Higher agitation speeds and DO concentrations were favorable for cell growth but inhibited γ-CGTase production. Lower agitation speeds and DO concentrations were in favor of attaining relatively higher value of specific γ-CGTase production rate in the later stage of fermentation. Two-stage agitation speed control strategy and two-stage DO control strategy were developed and compared for their potential in improving γ-CGTase production. By using the two-stage DO control strategy, γCGTase yield and productivity reached 552.3 U/ml and 6.13 kU/(l h), respectively, increasing by 77.9% and 50.9% over the fermentation at constant agitation speed of 300 rpm.

Keywords
γ-CGTase; Bacillus macorous; Agitation speed; Dissolved oxygen concentration; Two-stage oxygen supply strategy; Yield
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Effects of dissolved oxygen concentration and two-stage oxygen supply strategy on the production of γ-CGTase by Bacillus macorous
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 40, Issue 11, November 2005, Pages 3468–3473
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
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Any Questions? feel free to contact us