Related Experiment Video
Updated: Jul 11, 2026

Monitoring Intraspecies Competition in a Bacterial Cell Population by Cocultivation of Fluorescently Labelled Strains
Published on: January 18, 2014
Influence of growth conditions on bacteriocin production by Brevibacterium linens
1Departamento de Ciência de Alimentos, ICTA, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91501-970, Porto Alegre, Brazil.
Abstract:
The influence of temperature, NaCl concentration and cheese whey media on growth of Brevibacterium linens ATCC 9175 and production of bacteriocin-like antimicrobial activity was studied. Bacteriocin production and activity were higher at 25 degrees C than at 30 degrees C. No significant growth or production of bacteriocins was observed at 37 degrees C. When bacteriocin production was investigated in media containing different concentrations of NaCl, increased activity was observed in media containing 40 or 80 g l(-1), but not 120 g l(-1) NaCl. The addition of NaCl resulted in a significant increase in specific production rates of bacteriocin-like activity. Antimicrobial activity was also observed by cultivation of B. linens at 25 degrees C in cheese whey media.
Related Concept Videos
Antibiotic Selection
Bacterial Growth Curve
Factors Influencing Microbial Growth: pH
Factors Influencing Microbial Growth: Temperature
Production of Antibiotics
Regulation of Bacterial Virulence

