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A real-time PCR method targeting a gene sequence encoding 16S rRNA processing protein, rimM, for detection and enumeration of Streptococcus thermophilus in dairy products

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Title: A real-time PCR method targeting a gene sequence encoding 16S rRNA processing protein, rimM, for detection and enumeration of Streptococcus thermophilus in dairy products
Authors: Ongol, Martin Patrick Browse this author
Tanaka, Michiko Browse this author
Sone, Teruo Browse this author →KAKEN DB
Asano, Kozo Browse this author →KAKEN DB
Keywords: Dairy products
Real-time PCR
rimM Gene
Streptococcus thermophilus
Issue Date: Oct-2009
Publisher: Elsevier Ltd.
Journal Title: Food Research International
Volume: 42
Issue: 8
Start Page: 893
End Page: 898
Publisher DOI: 10.1016/j.foodres.2009.04.010
Abstract: A real-time PCR method targeting a gene sequence encoding 16S rRNA processing protein, rimM, for specific detection of Streptococcus thermophilus was developed. The designed real-time PCR primers and probe were specific for S. thermophilus JCM20026, LMG6896, LMG18311, OJT101, OJT102 but not Enteroccocus spp., Lactococcus lactis subsp. lactis, and Streptococcus salivarius which are phylogenetically closely related to S. thermophilus and are difficult to identify using culture-based methods. The linear range of the developed real-time PCR method was from 2.7 to 8.6 log CFU ml^[-1] with an amplification efficiency of 96%. Minor differences (about 0.4 log CFU ml^[-1]) were observed between counts of S. thermophilus obtained by culture and real-time PCR method in plain yoghurt and yoghurt containing fruits. Therefore, the developed real-time PCR method could be of potential application in specific detection and accurate enumeration of S. thermophilus in a wide range of dairy products.
Type: article (author version)
URI: http://hdl.handle.net/2115/39281
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 浅野 行蔵

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