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Development of culture media containing spent yeast cells of Debaryomyces hansenii and corn steep liquor for lactic acid production with Lactobacillus rhamnosus.

Rivas B, Moldes AB, Domínguez JM, Parajó JC

Department of Chemical Engineering, University of Vigo (Campus Ourense), Polytechnical Building, University Campus, As Lagoas, Edificio Politecnico, 32004, Ourense, Spain.

To develop a cost-effective fermentation medium, biomass of Debaryomyces hansenii coming from xylitol production and corn steep liquor was evaluated for lactic acid production by Lactobacillus rhamnosus in glucose-containing media. Glucose consumption and lactic acid generation were followed using a variety of media made with different nutrient supplementation. Under selected conditions, media containing glucose, biomass of D. hansenii and corn steep liquor as unique components led to product yields similar to those obtained in a fully supplemented medium.

Published 5 November 2004 in Int J Food Microbiol, 97(1): 93-8.
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