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KMID : 0380620210530010040
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Korean Journal of Food Science and Technology
2021 Volume.53 No. 1 p.40 ~ p.45
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Physiologically active components and vasorelaxation effect of Vitis labruscana B. and Vitis coignetiae grapevine leaves at growth stages
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Yu Jin-Ju
Kim Hye-Yoom
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Abstract
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Prior studies of physiologically active substances in grapes have focused only on the fruit, pericarp, and branches, as well as the pulp and seeds. The present study assessed the changes in quercetin-3-O-glucuronide (Q3OG) and flavonol glycoside content using grape leaves from Vitis labruscana B. and V. coignetiae at different growth stages and provided basic data for quality control. Content analysis showed that both varieties differed in Q3OG and flavonol glycoside content by growth stage, and the components were found to be high in the order of fruit, maturation, and coloration. Also, Vitis labruscana B. has a better vascular relaxation effect than Vitis coignetiae. These results suggest that in the use of grape leaves as a functional raw material, Q3OG and flavonol glycosides can be used as indicator components. In addition, if raw materials for each growth stage are mixed in a particular ratio, it will be a way to manage the specific efficacy and content of indicator components.
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KEYWORD
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Vitis labruscana B, Vitis coignetiae, Quercetin-3-O-glucuronide, Polyphenol, Vasorelaxation
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