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. 2018 Aug 15;257:325-332.
doi: 10.1016/j.foodchem.2018.03.025. Epub 2018 Mar 8.

Quality Assessment of Saffron (Crocus Sativus L.) Extracts via UHPLC-DAD-MS Analysis and Detection of Adulteration Using Gardenia Fruit Extract (Gardenia Jasminoides Ellis)

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Quality Assessment of Saffron (Crocus Sativus L.) Extracts via UHPLC-DAD-MS Analysis and Detection of Adulteration Using Gardenia Fruit Extract (Gardenia Jasminoides Ellis)

Benjamin Moras et al. Food Chem. .

Abstract

A new UHPLC-DAD-MS method based on a Core-Shell particles column was developed to realize the rapid separation of saffron stigma metabolites (Crocus sativus L.). A single separation of 35 compounds included cis and trans-crocetin esters (crocins), cis-crocetin, trans-crocetin, kaempferol derivatives, safranal, and picrocrocin from pure saffron stigmas. This method permitted the detection of 11 picrocrocin derivatives as the typical group of compounds from saffron as well as the detection of gardenia-specific compounds as typical adulterant markers. The metabolite concentration in a Standardized Saffron Extract (SSE) was determined using the method described herein and by comparison to the ISO3632 conventional method. The safranal content was 5-150 times lower than the value of 2% that was expected via ISO3632 analyses. Using the same Core-Shell separation, geniposide detection appeared to be a relevant approach for detecting the adulteration of saffron by using gardenia.

Keywords: Core-Shell phase; Crocins; Gardenia; Saffron adulteration; Saffron extracts; Safranal; UHPLC-DAD-MS.

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