Related Experiment Video
Updated: Aug 9, 2026

A Method to Assess Bacteriocin Effects on the Gut Microbiota of Mice
Published on: July 25, 2017
Isolation, characterization, and fermentation potential of coagulase-negative Staphylococci with taste-enhancing
Li Yang1, Hongjun Li1,2,3, Han Wu1
1College of Food Science, Southwest University, No.2 Tiansheng Road, Beibei District, Chongqing 400715, China.
Abstract:
No proprietary starter cultures for crafting Chinese bacon. This study aimed to isolate Coagulase-negative Staphylococci (CNS) from Chinese bacon, identify their species, and evaluate their ability to produce biogenic amines (BAs), peptides, free amino acids (FAAs), and degrade proteins. Twenty-one isolates were deficient in hemolysis, DNase, and coagulase activities, and exhibited low amino acid decarboxylase activity. Further characterization revealed 11 CNS species showing protease, lipase, or nitrate reductase activities. Specifically, S. cohnii WX-M8 was able to degrade both sarcoplasmic and myofibrillar proteins, while S. saprophyticus MY-A10 was found to only degrade myofibrillar proteins. Both were able to reduce the BAs and increase the content of peptides around day 3. The meat fermented by these two CNS contained FAAs that are more conducive to taste formation, such as Glu and Asp, and reduced the content of bitter FAAs. These findings will provide insights into the use of CNS for Chinese bacon.
Related Concept Videos
Microbes in Food Production
Microbes in Beverage Production
Microbes in the Production of Fermented Foods
Microbial Spoilage of Food
Production of Alcohol
Production of Organic Acids

