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Analysis of antioxidant prenylflavonoids in different parts of Macaranga tanarius,the plant origin of Okinawan propolis

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Asian Pacific Journal of Tropical Medicine 2014年第1期7卷 16-20页

作者： Shigenori Kumazawa Masayo Murase Noboru Momose syuichi fukumoto Department of Food and Nutritional Sciences University of Shizuoka52-1 YadaSuruga-kuShizuoka 422-8526.Japan Pokka Sapporo Food and Beverage 45-2 JuunisoKumanoshouKitanagoya-cityAichi 481-8515Japan

Objective:To analyze the antioxidant prenylilavonoids in different parts of Macaranga tanarius(***)(Euphorbiaceae)including the leaf,petiole,stem,leaflet,flower and fruit(only in female plant),and to evaluate their antioxidant ***:Methanol extracts of each part of *** were prepared and five prenylilavonoids in them were quantitatively analyzed using *** fruits from female plant were further separated into seed,pericarp,and glandular *** the quantitative analyses of prenylflavonoids in each part of ***,antioxidant activity of the extracts was evaluated by 2,2-diphenyl-l-picryI-hydrazyl(DPPH)radical scavenging ***:The leaf of *** contained two prenylflavonoids as main components in both male and female *** flowers(male and female)contained five kinds of *** the petiole,stem and leaflet of both male and female plants,the prenylflavonoids were not delected or their amounts were very *** kinds of prenylflavonoids were detected in the seed,pericarp and glandular trichome of female *** particular,the glandular trichome had the highest level of total prenylflavonoids(235 mg/g of fresh plant).DPPH radical scavenging activity of all parts was more than 30%.Conclusions:We found that different parts of *** contained antioxidant *** particular,not only the glandular trichome but also the leaf contained prenylflavonoids,which indicated that *** may be developed as a functional plant,because the leaves of this plant can be easily collected.

关键词： Macaranga tanarius Antioxidant Prenylflavonoid Propolis Plant origin Okinawa

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