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Molecular evaluation of microbial diversity occurring in different types of Mozzarella cheese

Molecular evaluation of microbial diversity occurring in different types of Mozzarella cheese Aims: The microbial community of different types of unripened Pasta Filata cheese was investigated by culture‐independent methods with the aim of rapidly achieving knowledge about cheese microbiota and discriminating traditional and industrial cheeses. Methods and Results: The microbial DNA extracted directly from the samples was used as a template in PCR experiments to amplify the 16S–23S rDNA spacer region and the V3 region of the 16S rDNA. Conventional electrophoresis of the amplified spacers allowed known classes of these DNA fragments belonging to genera and species of lactic acid bacteria to be distinguished. Denaturing gradient gel electrophoresis analysis of V3 amplicons was supported by reference cultures of LAB used as markers. Conclusions: Both molecular approaches furnished the expected information about microbial diversity and were quite valid for discriminating industrial, semi‐artisanal or traditional cheeses, characterized by increasingly complex DNA profiles. Significance and Impact of the Study: Both methods could be used for legal purposes when products obtained through prescribed manufacturing regulations are to be analysed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Microbiology Wiley

Molecular evaluation of microbial diversity occurring in different types of Mozzarella cheese

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References (25)

Publisher
Wiley
Copyright
Copyright © 2001 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1364-5072
eISSN
1365-2672
DOI
10.1046/j.1365-2672.2001.01262.x
Publisher site
See Article on Publisher Site

Abstract

Aims: The microbial community of different types of unripened Pasta Filata cheese was investigated by culture‐independent methods with the aim of rapidly achieving knowledge about cheese microbiota and discriminating traditional and industrial cheeses. Methods and Results: The microbial DNA extracted directly from the samples was used as a template in PCR experiments to amplify the 16S–23S rDNA spacer region and the V3 region of the 16S rDNA. Conventional electrophoresis of the amplified spacers allowed known classes of these DNA fragments belonging to genera and species of lactic acid bacteria to be distinguished. Denaturing gradient gel electrophoresis analysis of V3 amplicons was supported by reference cultures of LAB used as markers. Conclusions: Both molecular approaches furnished the expected information about microbial diversity and were quite valid for discriminating industrial, semi‐artisanal or traditional cheeses, characterized by increasingly complex DNA profiles. Significance and Impact of the Study: Both methods could be used for legal purposes when products obtained through prescribed manufacturing regulations are to be analysed.

Journal

Journal of Applied MicrobiologyWiley

Published: Mar 2, 2001

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