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Effect of pH and nonionic surfactant on profile of intracellular and extracellular Monascus pigments

Paper ID Volume ID Publish Year Pages File Format Full-Text
34723 45042 2013 9 PDF Available
Title
Effect of pH and nonionic surfactant on profile of intracellular and extracellular Monascus pigments
Abstract

•Effect of pH on profile of Monascus pigments.•Effect of nonionic surfactant on profile of Monascus pigments.•Secretion of intracellular pigments into its fermentation broth by nonionic surfactant.•Perstractive fermentation in nonionic surfactant micelle aqueous solution to produce yellow pigments extracellularly.

The uptake of nutrients and export of intracellular products are essential issues of microbial fermentation. Two-stage of Monascus fermentation using monosodium glutamate (MSG) as the sole nitrogen source, i.e., the first stage microbial fermentation in an aqueous solution and the second stage perstractive fermentation in a nonionic surfactant micelle aqueous solution, was carried out under different initial pH conditions. The results revealed that extracellular pH influences on the uptake of MSG and the export of water-soluble red pigment derivates into its extracellular broth. On the other hand, the export of intracellular hydrophobic pigments is affected by perstractive fermentation in nonionic surfactant micelle aqueous solution. All of those factors exhibit strong effect on the profile of Monascus pigments. This information is key to controlling profile of extracellular Monascus pigments by perstractive fermentation in nonionic surfactant micelle aqueous solution.

Keywords
Perstractive fermentation; Cloud point extraction; Monascus pigments; Nonionic surfactant; pH
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Effect of pH and nonionic surfactant on profile of intracellular and extracellular Monascus pigments
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 48, Issues 5–6, May–June 2013, Pages 759–767
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