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Bioresour Technol. 2010 Oct;101(20):7895-901. doi: 10.1016/j.biortech.2010.05.018. Epub 2010 Jun 2.

Efficient production of L-lactic acid from cassava powder by Lactobacillus rhamnosus.

Author information

1
Institute of Microbiology, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.

Abstract

Cassava is one of the most efficient and rich crops in terms of carbohydrate production, which is a tropical perennial plant that grows on poor or depleted soils. Microbial conversion of such a renewable raw material to useful products is an important objective in industrial biotechnology. L-Lactic acid was efficiently produced from cassava powder by a Lactobacillus rhamnosus strain CASL. The fermentation properties of cassava powder were compared with those of glucose and corn powder. The efficiencies of various fermentation strategies for L-lactic acid production from cassava powder, including simultaneous saccharification and fermentation (SSF), two-step fermentation (TSF) and simultaneous liquefaction, saccharification and fermentation (SLSF), were investigated. The high L-lactic acid concentration (175.4 g/l) was obtained using 275 g/l of cassava powder concentration (total sugar of 222.5 g/l) in SSF batch fermentation. This is the highest L-lactic acid concentration reported, from cassava source, and it provides an efficient L-lactic acid production process with cheap raw bioresources, such as cassava powder.

PMID:
20627717
DOI:
10.1016/j.biortech.2010.05.018
[Indexed for MEDLINE]

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