scholarly journals Membrane-Integrated Fermentation System for Improving the Optical Purity ofD-Lactic Acid Produced during Continuous Fermentation

2011 ◽  
Vol 75 (12) ◽  
pp. 2326-2332 ◽  
Author(s):  
Hideki SAWAI ◽  
Kyungsu NA ◽  
Nanami SASAKI ◽  
Takashi MIMITSUKA ◽  
Shin-ichi MINEGISHI ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Continuous Fermentation ◽  
Optical Purity ◽  
Fermentation System

scholarly journals Changes in the volatile composition of apple and apple/pear ciders affected by the different dilution rates in the continuous fermentation system

LWT ◽  
2021 ◽  
pp. 111630
Author(s):  
Jarosław Kliks ◽  
Joanna Kawa-Rygielska ◽  
Alan Gasiński ◽  
Justyna Rębas ◽  
Antoni Szumny
Keyword(s):  
Continuous Fermentation ◽  
Volatile Composition ◽  
Fermentation System

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

scholarly journals Kaskadennutzung von Lignocellulose: LX-Verfahren trifft auf B. coagulans

BIOspektrum ◽  
2020 ◽  
Vol 26 (7) ◽  
pp. 803-805
Author(s):  
Linda Schroedter ◽  
Friedrich Streffer ◽  
Katrin Streffer ◽  
Peter Unger ◽  
Joachim Venus
Keyword(s):  
Lactic Acid ◽  
Energy Saving ◽  
Optical Purity ◽  
Bacillus Coagulans ◽  
The Novel ◽  
Corn Straw

AbstractInvestigating alternatives for petrobased substrates, lignocellulose is an interesting yet complex feedstock that offers various possibilities for the design of new and sustainable chemical routes. The novel energy-saving LX-pretreatment was combined with thermophilic Bacillus coagulans. By this, corn straw was used in an innovative cascade obtaining biogas, lignin as well as polymerisable L-(+)-lactic acid of over 99 percents optical purity.

scholarly journals A Two-Stage Continuous Fermentation System for Conversion of Syngas into Ethanol

Energies ◽  
2013 ◽  
Vol 6 (8) ◽  
pp. 3987-4000 ◽  
Author(s):  
Hanno Richter ◽  
Michael Martin ◽  
Largus Angenent
Keyword(s):  
Continuous Fermentation ◽  
Two Stage ◽  
Fermentation System

scholarly journals Production and Purification of l-lactic Acid in Lab and Pilot Scales Using Sweet Sorghum Juice

Fermentation ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 36 ◽  
Author(s):  
Agata Olszewska-Widdrat ◽  
Maria Alexandri ◽  
José Pablo López-Gómez ◽  
Roland Schneider ◽  
Michael Mandl ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Sweet Sorghum ◽  
Lactic Acid Production ◽  
Optical Purity ◽  
Bacillus Coagulans ◽  
Pilot Scale ◽  
Environmentally Benign ◽  
Downstream Process ◽  
Sweet Sorghum Juice ◽  
Ultra Filtration

Sweet sorghum juice (SSJ) was evaluated as fermentation substrate for the production of l-lactic acid. A thermophilic Bacillus coagulans isolate was selected for batch fermentations without the use of additional nutrients. The first batch of SSJ (Batch A) resulted on higher lactic acid concentration, yield and productivity with values of 78.75 g∙L−1, 0.78 g∙g−1 and 1.77 g∙L−1 h−1, respectively. Similar results were obtained when the process was transferred into the pilot scale (50 L), with corresponding values of 73 g∙L−1, 0.70 g∙g−1 and 1.47 g∙L−1 h−1. A complete downstream process scheme was developed in order to separate lactic acid from the fermentation components. Coarse and ultra-filtration were employed as preliminary separation steps. Mono- and bipolar electrodialysis, followed by chromatography and vacuum evaporation were subsequently carried out leading to a solution containing 905.8 g∙L−1 lactic acid, with an optical purity of 98.9%. The results of this study highlight the importance of the downstream process with respect to using SSJ for lactic acid production. The proposed downstream process constitutes a more environmentally benign approach to conventional precipitation methods.

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.

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