期刊名称：Annals of Agricultural and Environmental Medicine
印刷版ISSN：1232-1966
电子版ISSN：1898-2263
出版年度：2014
卷号：21
期号：4
页码：728-729
DOI：10.5604/12321966.1129923
出版社：Institute of Agricultural Medicine in Lublin
摘要：Traditional Lighvan cheese is a semi-hard cheese which has a popular market in Iran and neighboring countries. The aimof this study was evaluating the contamination of milks used for Lighvan cheese making with Listeria monocytogenes. Rawmilk samples were randomly collected from different cheese producing factories (sampling carried out from large milk tanksused cheese making in factories). Isolation of L. monocytogenes was performed according to ISO 11290 and biochemicaltests were done to identify and confirm L. monocytogenes. 9 samples (50%) of the 18 collected samples from milk tanks inLighvan cheese producing factories were contaminated with L. monocytogenes. The concentration of L. monocytogenesin all 9 positive samples was 40 CFU/ml. This study is the first report of L. monocytogenes contamination in raw milks usedfor Lighvan cheese production in Iran. Regarding the fact that these cheeses are produced from raw milk and no heatingprocess is performed on them its milk contamination can be a potential risk for consumers
关键词：Listeria monocytogenes; raw milk; Lighvan cheese; Iran
