Determination of specialty food salt origin by using 16S rDNA fingerprinting of bacterial communities.
Résumé
The determination of geographical origin is required for the traceability system of food products. One way
of tracing the source of a product is to analyse the bacterial communities present on the food samples.
For this purpose, molecular techniques (such as PCR-DGGE) employing 16S rDNA profiles were used to
detect variations in bacterial community structures of salts from various regions. Statistical analyses of
rDNA profiles revealed that distinct microbial communities were detected. The profiles of salt bacteria
from different producing areas were different and specific for each location and could be used as a bar
code to certify the geographical origin of salts. These profiles could serve as specific markers for a specific
location. This method is proposed as a new traceability tool which provides salts with a unique bar code
that permits to trace back salts from store shelves to their original location of production.
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2014 ASSET Food integrity & traceability conference.pdf (5.4 Mo)
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