In this study, the contamination levels of hygienic indicators and foodborne
pathogens in retail meat products were investigated in relation to the various
market factors including processing temperature, processing area, and market
type. Ground beef samples (n=80) were purchased from 40 meat markets and
investigated for microbiological quality. Beefs processed below 20℃ had
significantly lower numbers of total coliforms (TC) than these processed over
20℃ (2.01 vs. 2.79 log CFU/g; p<0.05). Interestingly, separation
of processing area did not affect the contamination levels. Remarkably, the
contamination levels of hygienic indicator differ among market types, indicating
that not only processing condition but distribution structure that is directly
related with storage period could affect the final microbiological loads of the
meat products. In addition, the prevalences of Listeria
monocytogenes (a psychrotroph), Enterococcus
faecium, and Enterococcus faecalis were 7.5%
(6/80), 10.0% (8/80), and 20.0% (16/80), respectively, which is irrelevant to
market factors except meat products from wholesale markets where no L.
monocytogenes were found among 30 samples. The results of this
study indicate that the contamination level of hygiene indicator and foodborne
pathogens in retail beef is more related with processing temperature and storage
period than other environmental factors.