Document Detail


Effect of different fermentation parameters on l-lactic acid production from liquid distillery stillage.
MedLine Citation:
PMID:  23107725     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Expansion of lactic acid applications, predominantly for the preparation of biodegradable polymers increased the research interest for new, economically favourable production processes. Liquid stillage from bioethanol production can be an inexpensive, valuable source of nutrients for growth of lactic acid bacteria. Utilisation of residual biomass with spent fermentation media as a functional animal feed can greatly influence the process value and its ecological aspect. In this paper, the kinetics of lactic acid and biomass production on liquid stillage by Lactobacillus rhamnosus ATCC 7469 was studied. In addition, the impact of temperature, inoculum concentration, shaking and pH control by addition of CaCO(3) was evaluated. Maximal lactic acid yield of 73.4%, as well as high biomass production (3×10(8)CFUml(-1)) were achieved under selected conditions (41°C, 5% (v/v) of inoculum, 1% (w/v) of CaCO(3), initial pH of 6.5 and shaking rate of 90rpm). These results were achieved without supplementation of the stillage with nitrogen or mineral sources.
Authors:
Aleksandra P Djukić-Vuković; Ljiljana V Mojović; Maja S Vukašinović-Sekulić; Marica B Rakin; Svetlana B Nikolić; Jelena D Pejin; Maja L Bulatović
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Publication Detail:
Type:  Journal Article     Date:  2012-03-12
Journal Detail:
Title:  Food chemistry     Volume:  134     ISSN:  0308-8146     ISO Abbreviation:  Food Chem     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-10-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7702639     Medline TA:  Food Chem     Country:  England    
Other Details:
Languages:  eng     Pagination:  1038-43     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia.
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