fulltext.study @t Gmail

Direct l-lactic acid fermentation with sago starch by a novel amylolytic lactic acid bacterium, Enterococcus faecium

Paper ID Volume ID Publish Year Pages File Format Full-Text
17981 42708 2007 7 PDF Available
Title
Direct l-lactic acid fermentation with sago starch by a novel amylolytic lactic acid bacterium, Enterococcus faecium
Abstract

Novel amylolytic lactic acid bacterium from puto, fermented raw rice in Philippine, was isolated and characterized. The strain was identified as Enterococcus faecium No. 78 (BIOTECH 10375) by sugar fermentative test and 16S rDNA sequence analysis. Optimum pH and temperature were 6.5 and 30 °C, respectively. Direct l-lactic acid fermentation was carried out with various starches, lactic acid productivity with sago starch being similar to that with glucose. Yield of lactic acid from sago starch was higher than those from glucose and other starches. Strain No. 78 was superior to the other amylolytic lactic acid bacteria so far reported on the direct lactic acid fermentation with starches and produced lactic acid of high optical purity (98.6%). In direct lactic acid fermentation with starch, continuous culture has hardly been reported. Continuous culture system with high cell density of strain No. 78 showed higher lactic acid productivity (3.04 g l−1 h−1) than those of batch culture (1.105 g l−1 h−1) and conventional continuous culture (1.56 g l−1 h−1). Even if the dilution rate was increased up to 0.26 h−1, the residual starch concentration was controlled at moderately low level below 3.24 g l−1.

Keywords
Enterococcus faecium; Direct l-lactic acid fermentation; Sago starch
First Page Preview
Direct l-lactic acid fermentation with sago starch by a novel amylolytic lactic acid bacterium, Enterococcus faecium
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 41, Issues 1–2, 2 July 2007, Pages 149–155
Authors
, , , ,
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