Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 59, Issue 11, Pages 6209-6213Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf104959t
Keywords
Passiflora edulis; scirpusin B; piceatannol; vasorelaxation; passion fruit seed
Funding
- Ministry of Education, Culture, Sports, Science and Technology
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Piceatannol is present in passion fruit (Passiflora edulis) seeds in high amounts. In this study, we isolated the second major polyphenolic compound of passion fruit seeds and identified it as scirpusin B, which is a dimer of piceatannol. We investigated the antioxidant activities and vasorelaxing effects of these polyphenols. Their antioxidant effects were measured using an in vitro 1,1-dipheny1-2-picrylhydrazyl (DPPH) radical scavenging assay, and their vasorelaxant effects were determined ex vivo in rat thoracic aorta. Both polyphenolic compounds exhibited potent antioxidant activities and significant vasorelaxant effects in endotheliumintact aortas. More specifically, scirpusin B exerted a greater antioxidant activity and v-asorelaxant effect compared with that of piceatannol. Additionally, the vasorelaxation effects of the compounds were induced via the NO derived from the endothelium. This study provides the possibility that polyphenols in passion fruit seeds are effective against cardiovascular diseases (CVDs).
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