Identification of Hake species (Merluccius Genus) using sequencing and PCR-RFLP analysis of mitochondrial DNA control region sequences.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2001;
49:5108-5114. [PMID:
11714289 DOI:
10.1021/jf010421f]
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Abstract
The use of DNA-based methodologies in identification of hake species belonging to the Merluccius genus was shown to be successful. A short fragment of the left hypervariable domain of the mitochondrial control region was amplified, sequenced, and digested from 11 hake species. The hake-specific PCR product, due to its limited size, was obtained in a variety of tissue samples with different levels of DNA concentration and degradation, including sterilized food products. On the basis of this phylogenetically informative 156-bp sequence were selected four restriction enzymes (ApoI, DdeI, DraIII, and MboII) that allow the hake species discrimination. Species identification by phylogenetic analysis of sequences or by PCR-RFLP methodologies is useful in a variety of scenarios including authentication of thermally processed food, detection of food components, and species determination of individuals whose morphological characters are removed.
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