Exploiting DNA mini-barcodes as molecular markers to authenticate saffron (Crocus sativus L.)

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Villa, C (Author) Other; Joana Costa (Author) FFUP; Meira, L (Author) Other; Beatriz B P P Oliveira (Author) FFUP; Mafra, I (Author) Other

Journal

Title: Food Control

Vol. 65

Pages: 21-31

ISSN: 0956-7135

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 12 Citations

Scopus - 24 Citations

Other information

Authenticus ID: P-00K-3BD

DOI: 10.1016/j.foodcont.2016.01.008

Abstract (EN): Saffron (Crocus sativus) is the most expensive spice in the world. As a consequence, saffron has frequently been associated with an unrivalled degree of adulteration. The aim of this work was searching for DNA-barcode candidates as molecular markers to differentiate C. sativus from allied species and assessing the authenticity of saffron. New primers were specifically designed targeting three DNA barcode loci, namely ITS1, ITS2 and matK. A real-time PCR assay combined with high resolution melting (HRM) analysis was carried out in order to discriminate different Crocus spp., being further confirmed by sequencing. Data from HRM analysis showed that ITS1 and matK loci were Crocus genus specific, while ITS2 locus was species-specific for C sativus and Crocus cartwrightianus. This study revealed that genomic tools, and specifically DNA mini-barcodes combined with HRM analysis, can provide simple, fast and highly reliable methods for saffron authentication.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11