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Updated: Jul 4, 2026
04:40
The Cultivation, Growth, and Viability of Lactic Acid Bacteria: A Quality Control Perspective
Published on: June 16, 2022
Improvement of lactic cell production.
S Desmons1, H Krhouz, P Evrard
1Centre Wallon de Biologie Industrielle, Faculté universitaire des sciences agronomiques de Gembloux, 2, Passage des Déportés, B-5030 Belgium. BIOINDUS@fsagx.ac.be
Applied Biochemistry and Biotechnology
|June 26, 2008
Summary
Optimizing Lactobacillus brevis production using fed-batch fermentation and freeze-drying with additives significantly improved cell yields and long-term culture stability, confirmed by an Arrhenius-based model.
Area of Science:
- Microbiology
- Biotechnology
- Food Science
Background:
- Lactobacillus brevis is a key probiotic bacterium.
- Efficient production and long-term preservation are crucial for its applications.
- Current methods may limit yield and viability.
Purpose of the Study:
- To enhance Lactobacillus brevis production yields.
- To improve the survival rate of freeze-dried Lactobacillus brevis cultures.
- To develop a predictive model for the stability of preserved cultures.
Main Methods:
- Optimized medium composition and physiological conditions for fed-batch fermentation.
- Employed freeze-drying with additives like glycerol, CaCO3, and skimmed-milk powder.
- Developed and validated a stability model based on the Arrhenius equation.
Main Results:
- Achieved a cellular concentration of 8.2 x 10(10) cells/mL in 21 hours.
- Improved survival rates of freeze-dried cells up to 70% with additives.
- Validated the predictive stability model with experimental data.
Conclusions:
- Fed-batch fermentation and optimized freeze-drying significantly enhance Lactobacillus brevis production and preservation.
- The developed model accurately predicts long-term stability of freeze-dried cultures.
- These advancements support the reliable application of Lactobacillus brevis in various industries.
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