Cell-Recycle Continuous Fermentation of Enterococcus faecalis RKY1 for Economical Production of Lactic Acid by Reduction of Yeast Extract Supplementation

2014 ◽  
Vol 24 (5) ◽  
pp. 661-666 ◽  
Author(s):  
Ryun-Kyung Lee ◽  
Hwa-Won Ryu ◽  
Hurok Oh ◽  
Mina Kim ◽  
Young-Jung Wee
Keyword(s):  
Lactic Acid ◽  
Enterococcus Faecalis ◽  
Yeast Extract ◽  
Continuous Fermentation ◽  
Cell Recycle

Highly efficient l-lactic acid production from xylose in cell recycle continuous fermentation using Enterococcus mundtii QU 25

RSC Advances ◽  
2016 ◽  
Vol 6 (21) ◽  
pp. 17659-17668 ◽  
Author(s):  
Mohamed Ali Abdel-Rahman ◽  
Yukihiro Tashiro ◽  
Takeshi Zendo ◽  
Kenji Sakai ◽  
Kenji Sonomoto
Keyword(s):  
Lactic Acid ◽  
Continuous Fermentation ◽  
Corn Steep Liquor ◽  
Lactic Acid Production ◽  
High Concentration ◽  
Cell Recycle ◽  
Enterococcus Mundtii ◽  
Cell Recycling ◽  
Steep Liquor ◽  
Feeding Medium

We report an effective cell recycling continuous fermentation of xylose to l-lactic acid with high concentration, productivity, and yield using strain QU 25. pH was found to affect the yield and corn steep liquor as feeding medium enhanced the yield.

scholarly journals Draft Genome Sequence of Enterococcus faecalis DD14, a Bacteriocinogenic Lactic Acid Bacterium with Anti-Clostridium Activity

2017 ◽  
Vol 5 (30) ◽  
Author(s):  
Yanath Belguesmia ◽  
Valérie Leclère ◽  
Matthieu Duban ◽  
Eric Auclair ◽  
Djamel Drider
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacterium ◽  
Enterococcus Faecalis ◽  
Genome Sequence ◽  
Draft Genome ◽  
Draft Genome Sequence ◽  
Coding Sequences ◽  
Content Type ◽  
Gram Positive Bacteria ◽  
Healthy Newborn

ABSTRACT We report the draft genome sequence of Enterococcus faecalis DD14, a strain isolated from meconium of a healthy newborn at Roubaix Hospital (France). The strain displayed antagonism against a set of Gram-positive bacteria through concomitant production of lactic acid and bacteriocin. The genome has a size of 2,893,365 bp and a 37.3% G+C ratio and is predicted to contain at least 2,755 coding sequences and 62 RNAs.

scholarly journals Recycling Of Peneapple Waste Using Lactobacillus Delbroeckii to Lactic Acid

REAKTOR ◽  
2017 ◽  
Vol 5 (2) ◽  
pp. 79
Author(s):  
Abdullah Abdullah ◽  
H. B. Mat
Keyword(s):  
Lactic Acid ◽  
Yeast Extract ◽  
Lactic Acid Production ◽  
Lactobacillus Delbrueckii ◽  
Raw Material ◽  
Acid Fermentation ◽  
Fermentation Time ◽  
Pineapple Waste ◽  
Fermentation Liquid ◽  
Initial Ph

The liquid pineapple waste contain mainly sucrose, glucose, fructose, and other nutrients. It therefore can potentiall be used as carbon source for organic acid fermentation. Recently, lactic acid has been considered to be an important raw material for production of biodegradadable lactace polymer. The experiments weree carried out in shake flash fermentation using lactobacillus delbroeckii. Effect of some parameters such as temperature, initial Ph, initial substrate concentration, yeast extract concentration and fermentation time to the yield have been studied. The highest yield was 85.65% achieved at 40 0C, PH 6.00, 52.2 g/l sugar concentration with 5 g/l yeast extract. There was no significant increasing in lactic acid production was observed if supplementation of yeast extract above 10%.Keyword : lactic acid fermentation, liquid pineapple waste, lactobacillus delbrueckii

Continuous production of d-lactic acid from cellobiose in cell recycle fermentation using β-glucosidase-displaying Escherichia coli

2019 ◽  
Vol 127 (4) ◽  
pp. 441-446 ◽  
Author(s):  
Yuji Aso ◽  
Mikikazu Tsubaki ◽  
Bui Hoang Dang Long ◽  
Ryo Murakami ◽  
Keisuke Nagata ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Lactic Acid ◽  
Continuous Production ◽  
Cell Recycle

scholarly journals High Productivity Ethanol Fermentation of Glucose & Xylose Using Membrane Assisted Continuous Cell Recycle

2021 ◽  
pp. 8-19
Author(s):  
Gautam Degweker ◽  
Arvind Lali
Keyword(s):  
Ethanol Fermentation ◽  
Ethanol Yield ◽  
Continuous Fermentation ◽  
Cost Effective ◽  
High Yield ◽  
High Cell ◽  
Cell Recycle ◽  
High Productivity ◽  
Ethanol Yields ◽  
Cell Densities

Rapid and high yield conversion of xylose to ethanol remains a signi cant bottleneck in the cost-effective production of ethanol using mixed sugars derived from lignocellulosic biomass (LBM). The present study attempts to circumvent this by separate continuous fermentation of glucose and xylose using high cell densities of a Saccharomyces cerevisiae mutant (ICT-1) and a Scheffersomyces stipitis mutant (M1CD), respectively with the help of external micro ltration membrane assisted cell recycle. Different cell densities and aeration rates for xylose fermentation were studied for optimizing continuous fermentation. Consistent high ethanol yields and productivities of 0.46 g/g and 5.19 g/L/h with glucose; and 0.38 g/g and 1.62 g/L/h with xylose; were achieved in simple media. This provided an average ethanol yield of 0.44 g/g on combined sugars, and average productivity of 3.4 g/L/h which is higher than typical molasses-based batch ethanol fermentation. The study thus highlights the potential of high cell density recycle strategy as an effective approach for separate ethanol fermentation of LBM derived sugars.

The application of cell recycle to continuous fermentative lactic acid production

1983 ◽  
Vol 5 (10) ◽  
pp. 665-670 ◽  
Author(s):  
T. B. Vick Roy ◽  
D. K. Mandel ◽  
D. K. Dea ◽  
H. W. Blanch ◽  
C. R. Wilke
Keyword(s):  
Lactic Acid ◽  
Acid Production ◽  
Lactic Acid Production ◽  
Cell Recycle

Continuous Fermentation in the Production of Lactic Acid

1931 ◽  
Vol 23 (5) ◽  
pp. 532-534 ◽  
Author(s):  
E. O. Whittier ◽  
L. A. Rogers
Keyword(s):  
Lactic Acid ◽  
Continuous Fermentation
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