Title |
Lactobacillus plantarum BL011 cultivation in industrial isolated soybean protein acid residue
|
---|---|
Published in |
Brazilian Journal of Microbiology, July 2016
|
DOI | 10.1016/j.bjm.2016.06.003 |
Pubmed ID | |
Authors |
Chaline Caren Coghetto, Carolina Bettker Vasconcelos, Graziela Brusch Brinques, Marco Antônio Záchia Ayub |
Abstract |
In this study, physiological aspects of Lactobacillus plantarum BL011 growing in a new, all-animal free medium in bioreactors were evaluated aiming at the production of this important lactic acid bacterium. Cultivations were performed in submerged batch bioreactors using the Plackett-Burman methodology to evaluate the influence of temperature, aeration rate and stirring speed as well as the concentrations of liquid acid protein residue of soybean, soy peptone, corn steep liquor, and raw yeast extract. The results showed that all variables, except for corn steep liquor, significantly influenced biomass production. The best condition was applied to bioreactor cultures, which produced a maximal biomass of 17.87gL(-1), whereas lactic acid, the most important lactic acid bacteria metabolite, peaked at 37.59gL(-1), corresponding to a productivity of 1.46gL(-1)h(-1). This is the first report on the use of liquid acid protein residue of soybean medium for L. plantarum growth. These results support the industrial use of this system as an alternative to produce probiotics without animal-derived ingredients to obtain high biomass concentrations in batch bioreactors. |
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