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  • A simple protocol for metab...
    Varadharajan, Bhooma; Madasamy, Parani

    Journal of food and nutrition research, 01/2021, Letnik: 60, Številka: 4
    Journal Article

    Being an expensive spice, saffron is highly prone to adulteration. Crocin, picrocrocin and safranal, which are commonly used as chemical markers for authentication, suffer from a lack of stability and uniqueness to saffron. Inexpensive synthetic safranal poses an additional concern in adulteration. Therefore, identification of other metabolites becomes essential for saffron authentication. Available metabolite extraction methods are laborious, time-consuming and require a large quantity of samples. We report a simple protocol for extracting the metabolites from as little as 5 mg of saffron using 100 μl of solvent in 2 h. High-performance liquid chromatography (HPLC) of the metabolites at 1 ml·min-1 flow rate with 70% acetonitrile for 10 min and detection at 308 nm yielded an HPLC fingerprint specific to saffron's stigma. The fingerprint was stable after at least 6 years of storage at room temperature and successfully differentiated the authentic from inauthentic market samples.