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Bioconversion of corn distiller's dried grains with solubles (CDDGS) to extracellular proteases and peptones

Paper ID Volume ID Publish Year Pages File Format Full-Text
35713 45103 2007 6 PDF Available
Title
Bioconversion of corn distiller's dried grains with solubles (CDDGS) to extracellular proteases and peptones
Abstract

This study is aimed at developing a two-step process (fermentation plus enzymatic hydrolysis) for protease and peptone production, using a bioethanol industry by-product – corn distiller's dried grains with solubles (CDDGS) – as the sole carbon/nitrogen and protein source, respectively.Bacillus licheniformis was used for protease production. CDDGS concentration is the main parameter controlling protease generation, only low substrate concentration (below 2%, w/v) induces sporulation followed by enzyme excretion.The enzymatic peptone production process was implemented using the B. licheniformis fermentation broth (proteases) generated in the first step as hydrolytic tool, and CDDGS as a protein source.The protein present in CDDGS is solubilized yielding a peptone (protein concentration >80%), mainly composed of peptides and oligopeptides, soluble at practically all pH values. Both products, proteases and peptones, could be of great potential in industrial processes and in nutrition and food science.

Keywords
Distiller's grains; Bacillus licheniformis; Proteases; Peptone
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Bioconversion of corn distiller's dried grains with solubles (CDDGS) to extracellular proteases and peptones
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 42, Issue 11, November 2007, Pages 1492–1497
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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Any Questions? feel free to contact us