Polyphenol contents and radical-scavenging activity of extracts from fruits and vegetables in cultivated in Okinawa, Japan

The extracts from 66 species of fruits and vegetables cultivated in Okinawa region of Japan were prepared by sequential extraction with acetone at 30 deg C and 80% ethanol solution at 80 deg C), and their polyphenol contents and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activities were...

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Published inAgricultural and biological chemistry Vol. 52; no. 10
Main Authors Suda, I.(National Agricultural Research Center for Kyushu Okinawa Region, Nishigoshi, Kumamoto (Japan)), Oki, T, Nishiba, Y, Masuda, M, Kobayashi, M, Nagai, S, Hiyane, R, Miyashige, T
Format Journal Article
LanguageJapanese
Published 01.10.2005
Subjects
ANTHOCYANE
ANTHOCYANINS
ANTIOXIDANTES
ANTIOXIDANTS
ANTIOXYDANT
ANTOCIANINAS
COLORIMETRIA
COLORIMETRIE
COLORIMETRY
CONTENIDO FENOLICO
DOMESTIC PRODUCTION
EXTRACCION
EXTRACTION
FRUIT
FRUTO
HORTALIZAS
JAPAN
JAPON
LEGUME
MANILKARA ZAPOTA
PHENOLIC CONTENT
PRODUCCION INTERIOR
PRODUCTION INTERIEURE
TENEUR EN PHENOLS
VEGETABLES
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Summary:The extracts from 66 species of fruits and vegetables cultivated in Okinawa region of Japan were prepared by sequential extraction with acetone at 30 deg C and 80% ethanol solution at 80 deg C), and their polyphenol contents and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activities were measured. The total polyphenol contents of both extracts from edible parts varied in the range of 0.35 to 142.04 mu mol-gallic acid equivalent/g-fresh weight. The plants with higher polyphenol content showed a consistent tendency to exhibit higher radical-scavenging activity. Sapodilla (Manikara zapora), canistel (Pouteria campechiana), guava (Psidium guajava) and starfruit (Averrhoa carambola), originally came from the tropical zone, showed both higher level of polyphenol content and radical-scavenging activity, and they contained proanthocyanidin. The following higher group composed of bayberry (Myrica rubra), red cabbage (Brassica oleracea), suizenjina (Gynura bicolor) and purple-fleshed sweet potato (Ipomoea batatas), which contained anthocyanins. Nigana (Crepidiastrum lanceolatum), botanboufuu (Peucedanum japonicum) and nishiyomogi (Artemisia Indica), cooked only in Okinawa region within the country, also showed a high polyphenol content and radical-scavenging activity. In addition, there were some extracts from inedible parts of fruits, which possessed almost the same or higher level of polyphenol content and radical-scavenging activity, compared to their edible parts.
Bibliography:2006003317
Q04
ISSN:0002-1369