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Polish Journal of Microbiology
Polish Society of Microbiologists
Subject: Microbiology
ISSN: 1733-1331
eISSN: 2544-4646
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Betaine Improves Polymer-Grade D-Lactic Acid Production by Sporolactobacillus inulinus Using Ammonia as Green Neutralizer
Guoping Lv / Chengchuan Che / Li Li / Shujing Xu / Wanyi Guan / Baohua Zhao / Jiansong Ju *
Keywords : Sporolactobacillus inulinus, ammonia as neutralizer, betaine as osmoprotectant, D-lactic acid production
Citation Information : Polish Journal of Microbiology. Volume 66, Issue 2, Pages 273-276, DOI: https://doi.org/10.5604/01.3001.0010.7880
License : (CC BY-NC-ND 4.0)
Received Date : 20-April-2016 / Accepted: 08-September-2016 / Published Online: 28-June-2017
- ARTICLE
- FIGURES & TABLES
- REFERENCES
- EXTRA FILES
- COMMENTS
ARTICLE
ABSTRACT
The traditional CaCO3-based fermentation process generates huge amount of insoluble waste. To solve this problem, we have developed an efficient and green D-lactic acid fermentation process by using ammonia as neutralizer. The 106.7 g/l of D-lactic acid production and 0.89 g/g of consumed sugar were obtained by Sporolactobacillus inulinus CASD with a high optical purity of 99.7% by adding 100 mg/l betaine in the simple batch fermentation. The addition of betaine was experimentally proven to protect cells at high concentration of ammonium ion, increase D-lactate dehydrogenase specific activity and thus promote the production of D-lactic acid.
FIGURES & TABLES
REFERENCES
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