Antimicrobial effect of pressurised carbon dioxide onEnterococcus faecalis in physiological saline and foods

✍ Scribed by Erkmen, Osman

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 115 KB
• Volume: 80
• Category: Article
• ISSN: 0022-5142
• DOI: 10.1002/(sici)1097-0010(200003)80:4<465::aid-jsfa550>3.0.co;2-e

✦ Synopsis

Inactivation of Enterococcus faecalis by high-pressure CO 2 was investigated in a batch system. Two phases were observed in the survival curves. The earlier stage was characterised by a slow rate of decrease in the number of E faecalis. This rate increased sharply at the later stage. Enterococcus faecalis suspended in physiological saline was completely inactivated under 6.05 and 3.02 MPa CO 2 treatment in 18 and 80 min respectively at 35 °C. The high pressure of CO 2 at 45 °C was effective at sterilising orange, peach and carrot juices but ineffective for whole and skimmed milk. A minimum D-value was obtained under 6.05 MPa CO 2 pressure at 45 °C. Reduction rates of E faecalis were sensitive to pressure, temperature, exposure time, the initial number of cells and the suspending medium.