Liha töötlemine
2000). Greer shelf life extension was seen with an initial
(1988) showed that phage concentration bacteria density in excess of 3 log10 CFU/cm2
remained stable (5 to 6 log10 PFU/cm2) on the and phage concentrations above 7 log10 PFU/
surface of refrigerated (4°C) beef rib-eye cm2. Greer and Dilts (2002) were able to
steaks during 14 days of storage in air. extend the shelf life of inoculated (B. ther-
Whitman and Marshall (1971b) showed that mosphacta) and homologous phage-treated
some Pseudomonas phages isolated from refrigerated pork adipose tissue from 4 to 8
beef may remain infectious after heating to days. Leuconostoc gelidum phage isolated
60°C, pH change to 4.0, and exposure to 4 M from vacuum-packaged pork loin was able to
NaCl. Phages are naturally present entities limit growth of the corresponding host on
and constitute part of the environment. inoculated pork adipose tissue stored at 4°C