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EFFECTS OF SUBSTRATE CONCENTRATION ON GROWTH AND LACTIC-ACID PRODUCTION BY MIXED CULTURES OF LACTOBACILLUS-BULGARICUS AND STREPTOCOCCUS-THERMOPHILUS
Date
1992-01-01
Author
OZEN, S
OZILGEN, M
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The kinetics of growth and lactic acid production by mixed cultures of Lactobacillus bulgaricus and Streptococcus thermophilus were modeled with a set of modified logistic and Luedeking-Piret equations. The specific growth rates and the inhibitory effect of each individual species on the mixed culture growth were found to be determined by the media composition. The kinetic analysis clearly showed that the contribution of each microbial species to the mixed culture growth process changed drastically when the substrate concentration was about 15%. This optimum initial substrate concentration was in agreement with the results of the previous studies and the optimum found by trial and error procedure in commercial yogurt production.
Subject Keywords
Biotechnology
,
Fuel Technology
,
Inorganic Chemistry
,
Renewable Energy, Sustainability and the Environment
,
Organic Chemistry
,
Waste Management and Disposal
,
Pollution
,
General Chemical Engineering
URI
https://hdl.handle.net/11511/64853
Journal
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
DOI
https://doi.org/10.1002/jctb.280540111
Collections
Department of Food Engineering, Article