Physiological adaptation of Escherichia coli after transfer onto refrigerated ground meat and other solid matrices: A molecular approach

Abstract

Département des sciences animales Faculté des sciences de l'agriculture et de l'alimentation

Whole-Genome Transcriptional Analysis of Escherichia coli during Heat Inactivation Processes Related to Industrial Cooking

“…Through these methods, the influence of sublethal temperatures has been well characterized in E. coli and more than 30 proteins implicated in the physiological response to heat stress have been identified (6). Thus, molecular chaperones, such as dnaK and groEL, are involved in protein folding and repair throughout the life of bacteria and their accumulation may be used to assess bacterial physiology (18). Furthermore, many global transcriptome analyses have been performed on E. coli after heat shock to understand molecular changes during cell adaptation (19)(20)(21)(22)(23)(24)(25) but none were carried out above 50°C and for a period as long as those used in industry to provide microbial control.…”