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Solid-state fermentation for l-lactic acid production from agro wastes using Lactobacillus delbrueckii

Paper ID Volume ID Publish Year Pages File Format Full-Text
36599 45138 2006 5 PDF Available
Title
Solid-state fermentation for l-lactic acid production from agro wastes using Lactobacillus delbrueckii
Abstract

A viable process based on a low cost production media is desired to enhance the economics of fermentative production of l-lactic acid. Attempts were made to exploit two agro-industrial wastes, cassava bagasse and sugarcane bagasse, as a raw material and inert solid support using solid-state fermentation (SSF). Gelatinised cassava bagasse was enzymatically hydrolysed and starch hydrolysate containing reducing sugar was used to moisten the inert sugarcane bagasse, which was used as the solid support for SSF. This substrate was supplemented with 0.5 g/5 g support NH4Cl and yeast extract. SSF was carried out in 250 ml Erlenmeyer flasks at 37 °C using Lactobacillus delbrueckii as inoculum. Key parameters such as initial moisture content and initial sugar were optimised statistically by response surface methodology. A maximum of 249 mg/gds l-lactic acid was obtained after 5 days of fermentation under the optimised conditions with a conversion efficiency of about 99% of the initial reducing sugars.

Keywords
l(+)-Lactic acid; Solid-state fermentation; Cassava bagasse hydrolysate; Sugarcane bagasse; Lactobacillus delbrueckii; Response surface methodology
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Solid-state fermentation for l-lactic acid production from agro wastes using Lactobacillus delbrueckii
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 4, April 2006, Pages 759–763
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