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Optimisation of glutamic acid production from cassava starch factory residues using Brevibacterium divaricatum

Paper ID Volume ID Publish Year Pages File Format Full-Text
36517 45134 2005 4 PDF Available
Title
Optimisation of glutamic acid production from cassava starch factory residues using Brevibacterium divaricatum
Abstract

There is serious concern about the disposal of solid residues left after large-scale cassava starch extraction. Storage of residues if badly managed, leads to serious environmental problems. Owing to the high starch content and organic nature of these wastes, an attempt has been made to utilise it for the production of glutamic acid, the precursor of monosodium glutamate, employing submerged fermentation using Brevibacterium divaricatum. The effect of temperature, pH, inoculum size, speed of agitation and nitrogen sources were studied. With 0.7% ammonium nitrate in the medium, highest glutamate yield of 3.86% based on the weight of the residues was obtained at 30 °C at a pH of 7.0. The highest glutamate production was recorded at 5% inoculum size at an agitation speed of 180 rpm. The study showed that the solid residues from cassava starch factories could serve as a low-cost substrate for glutamic acid production.

Keywords
Starch industry; Cassava residues; Fermentation; Glutamic acid; Brevibacterium
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Optimisation of glutamic acid production from cassava starch factory residues using Brevibacterium divaricatum
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 40, Issue 11, November 2005, Pages 3576–3579
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