ATR-FTIR-based fngerprinting of someCucurbitaceae extracts: a preliminary study

摘要

Te attenuated total refectance-Fourier transform infrared (ATR-FTIR) fngerprinting of some selected cucurbits was performed on three types of seed extracts (alcoholic, cold-water, and hot-water) in order to elaborate a characteristic FTIR profle of their family representatives and to determine their biochemical content. Cluster analysis and principal component analysis were performed on Cucumis melo subsp. melo var. inodorus, Cucurbita pepo, C. maxima, C. pepo var. cylindrica, C. maxima subsp. maxima convar. maxima ‘Hokkaido’ to determine the similarities between their seed extracts. Te ethanol extract of the C. pepo seeds was diferent from the other seed extracts because in addition to esters, it contained free fatty acids, which could infuence its pharmacological activity. Te main variable diferentiating the extracts was the absorption band at 2,920–2,925 cm?1, which represented saturated fatty acids. Te obtained results were analyzed by various statistical tools to evaluate the fngerprints of the selected species of cucurbits.