Related Experiment Video
Updated: Jun 13, 2026

Process Development for the Spray-Drying of Probiotic Bacteria and Evaluation of the Product Quality
Published on: April 7, 2023
Synergistic effect of high pressure processing and Lactobacillus casei antimicrobial activity against pressure
Hyun-Jung Chung1, Ahmed E Yousef
1Department of Food and Nutrition, Inha University, Incheon, Republic of Korea. hjchung@inha.ac.kr
Abstract:
The purpose of this study was to evaluate combinations of high pressure processing (HPP) and Lactobacillus casei antimicrobial activity against Listeria monocytogenes strains with variation in pressure resistance in culture and in a food model. In culture, combination of HPP (350 MPa, for 1-20 min) and Lb. casei cell extract (CE, 32 CEAU/ml) showed a significant synergistic bactericidal effect (P<0.05) and the combination treatment decreased pathogen's population >5 log(10)CFU/ml. Synergy between CE and HPP was most evident in the pressure-resistant strain, OSY-8578. Similar result was observed in meat products where high pressure (500 MPa for 1 min), and high-activity CE (100 CEAU/g) caused >5 log reduction in the viability of L. monocytogenes Scott A. The combination treatment resulted in the absence of peaks associated with cellular components in DSC thermogram suggesting that the presence of CE may have caused a considerable damage to cellular components during the high pressure treatment.
More Related Videos
04:40The Cultivation, Growth, and Viability of Lactic Acid Bacteria: A Quality Control Perspective
Published on: June 16, 2022
10:03Investigating the Detrimental Effects of Low Pressure Plasma Sterilization on the Survival of Bacillus subtilis Spores Using Live Cell Microscopy
Published on: November 30, 2017
Related Concept Videos
Pasteurization and Food Preservation
Microbes in Food Production
Microbes in the Production of Fermented Foods
Methods of Controlling Food Spoilage
Production of Organic Acids
Clinical Significance of Antibiotic Resistance