Microencapsulation of Probiotics and Applications in Food Fermentation

2016 ◽  
pp. 180-205 ◽  
Keyword(s):  
Food Fermentation

scholarly journals A Combined Model To Predict the Functionality of the Bacteriocin-Producing Lactobacillus sakei Strain CTC 494

2003 ◽  
Vol 69 (2) ◽  
pp. 1093-1099 ◽  
Author(s):  
Frédéric Leroy ◽  
Luc De Vuyst
Keyword(s):  
Lactic Acid ◽  
Acid Production ◽  
Lactic Acid Production ◽  
Lactobacillus Sakei ◽  
Predictive Microbiology ◽  
Bacteriocin Activity ◽  
Combined Model ◽  
Food Fermentation ◽  
Dissociation Degree ◽  
Industrial Use

ABSTRACT The use of bacteriocin-producing lactic acid bacteria for improved food fermentation processes seems promising. However, lack of fundamental knowledge about the functionality of bacteriocin-producing strains under food fermentation conditions hampers their industrial use. Predictive microbiology or a mathematical estimation of microbial behavior in food ecosystems may help to overcome this problem. In this study, a combined model was developed that was able to estimate, from a given initial situation of temperature, pH, and nutrient availability, the growth and self-inhibition dynamics of a bacteriocin-producing Lactobacillus sakei CTC 494 culture in (modified) MRS broth. Moreover, the drop in pH induced by lactic acid production and the bacteriocin activity toward Listeria as an indicator organism were modeled. Self-inhibition was due to the depletion of nutrients as well as to the production of lactic acid. Lactic acid production resulted in a pH drop, an accumulation of toxic undissociated lactic acid molecules, and a shift in the dissociation degree of the growth-inhibiting buffer components. The model was validated experimentally.

Food, Fermentation, and Micro-organisms

2019 ◽  
Author(s):  
Charles W. Bamforth ◽  
David J. Cook
Keyword(s):  
Food Fermentation ◽  
Micro Organisms
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