2007•China BrewingRequires access
L-lactic acid production by feed batch fermentation of Lactobacillus casei
Xiaofeng Li
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Abstract
In this paper,the L-lactic acid production by feed batch fermentation of Lactobacillus casei was studied.By batch fermentation without feeding,the maximum L-lactic acid concentration,L-lactic acid yield and the maximal dry cell weigh were up to 76.9 g/L,64.1% and 6.5 g/L,respectively.However,batch-feeding glucose was found to be an effective method for L-lactic acid fermentation.Compared with the batch fermentation,the batch-feeding glucose culture showed 17.9% increase in L-lactic acid production,32.3% increase in dry cell weight,respectively and the purity of L-lactic acid was 95.7%.