Document Detail


Characterization of ethanol fermentation waste and its application to lactic acid production by Lactobacillus paracasei.
MedLine Citation:
PMID:  22907566     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In this study, an ethanol fermentation waste (EFW) was characterized for use as an alternative to yeast extract for bulk fermentation processes. EFW generated from a commercial plant in which ethanol is produced from cassava/rice/wheat/barley starch mixtures using Saccharomyces cerevisiae was used for lactic acid production by Lactobacillus paracasei. The effects of temperature, pH, and duration on the autolysis of an ethanol fermentation broth (EFB) were also investigated. The distilled EFW (DEFW) contained significant amounts of soluble proteins (2.91 g/l), nitrogen (0.47 g/l), and amino acids (24.1 mg/l). The autolysis of the EFB under optimum conditions released twice as much amino acids than in the DEFW. Batch fermentation in the DEFW increased the final lactic acid concentration, overall lactic acid productivity, and lactic acid yield on glucose by 17, 41, and 14 %, respectively, in comparison with those from comparable fermentation in a lactobacillus growth medium (LGM) that contained 2 g/l yeast extract. Furthermore, the overall lactic acid productivity in the autolyzed then distilled EFW (ADEFW) was 80 and 27 % higher than in the LGM and DEFW, respectively.
Authors:
Se-Kwon Moon; Julia Lee; Hyohak Song; Jung-Hee Cho; Gi-Wook Choi; Doyoung Seung
Related Documents :
22541496 - Ruminal escape and intestinal digestibility of ruminally protected lysine supplements d...
8321816 - Response of layer breeders to dietary acetylsalicylic acid. 2. effects on circulating c...
6737086 - Effects of branched-chain alpha-keto acids on plasma amino acid concentrations in carbo...
1972376 - Synthesis of beta- and gamma-fluorenylmethyl esters of respectively n alpha-boc-l-aspar...
11951986 - Determination of malic acid and other c4 dicarboxylic acids in atmospheric aerosol samp...
7604636 - Hydrolysis of fatty acid esters by malassezia furfur: different utilization depending o...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-21
Journal Detail:
Title:  Bioprocess and biosystems engineering     Volume:  -     ISSN:  1615-7605     ISO Abbreviation:  Bioprocess Biosyst Eng     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088505     Medline TA:  Bioprocess Biosyst Eng     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Changhae Institute of Cassava and Ethanol Research, Changhae Ethanol Co., Jeonju, 561-203, Republic of Korea.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Validation of a 30-year-old process for the manufacture of L: -asparaginase from Erwinia chrysanthem...
Next Document:  A randomized double-blind controlled study of laninamivir compared with oseltamivir for the treatmen...