کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10890756 1081820 2005 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of a rapid detection and enumeration method for thermophilic bacilli in milk powders
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیوتکنولوژی یا زیست‌فناوری
پیش نمایش صفحه اول مقاله
Development of a rapid detection and enumeration method for thermophilic bacilli in milk powders
چکیده انگلیسی
Thermophilic strains of Geobacillus, Anoxybacillus and Bacillus that are able to grow at 55 °C and above are recognized as commonly occurring contaminants during the production of milk powders. In particular, Anoxybacillus flavithermus strain C and Bacillus licheniformis strain F are often the most prevalent. We describe here the development of a TaqMan-based real-time-PCR assay using a small amplicon of the ribosomal 16S rRNA gene for the selective and quantitative detection of thermophilic bacilli in milk powders. We further present an effective, rapid and inexpensive method for the isolation of total bacterial DNA from milk powder for quantitative PCR analysis within 20 min. With this method, the detection of thermophilic bacilli in milk powder can be accomplished within 1 h. The detection limit for reconstituted and inoculated milk was 8 vegetative cfu ml−1 and 64 spores ml−1, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Microbiological Methods - Volume 60, Issue 2, February 2005, Pages 155-167
نویسندگان
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