Investigation of the factor for persistence of Listeria monocytogenes in food processing plants

2016 Fiscal Year Final Research Report

• Project/Area Number: 25350180
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Eating habits
• Research Institution: Osaka City Institute of Public Health and Environmental Sciences
• Principal Investigator: Nakamura Hiromi 大阪市立環境科学研究所, 調査研究課 微生物保健グループ, 研究主任 (00332445)
• Co-Investigator(Renkei-kenkyūsha): ABE NIICHIROU 大阪市立環境科学研究所, 調査研究課微生物保健グループ, 研究副主幹 (10321936) ; WADA TAKAYUKI 長崎大学, 熱帯医学研究所, 助教 (70332450)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: リステリア / PFGE / MLST / 遺伝子型別 / 自由生活性アメーバ / 食品製造施設 / 食品

Outline of Final Research Achievements

One hundred and forty-nine of Listeria monocytogenes (LM) strains isolated from the food and the food-processing plants were classified by genetic analysis (PFGE and MLST). We detected LM and free-living amoebae (FLA) in 81 swab samples obtained from the three lightly-pickled vegetables processing plants. As the result of this, we specified some genetic types of LM which were consistently detected from several foods processed by different manufacturers. Three swab samples from two different plants detected both LM and FLA, of which two samples were from packaging machines.

Free Research Field

食品細菌学