採取時期および雌雄がヤマモモの当年葉におけるラジカル捕捉活性に及ぼす影響(普及・教育・利用)  [in Japanese] Effects of Leaf Collection Time and Sex of the Donor Tree on Radical Scavenging Activity of the Current Leaf in Red Bayberry(Human Issue & Methodology in Horticulture)  [in Japanese]

ヤマモモの部位別のラジカル捕捉活性を熱水抽出,エタノール抽出で評価したところ,いずれも葉の活性が最も高く,次いで枝,未熟果であり,種子と成熟果においては活性が著しく低かった.また,活性が最も高かった当年葉について採取時期及び雌雄がラジカル捕捉活性に及ぼす影響について検討したところ,採取地点にかかわらず,7月採取葉の活性値が最も高かった.

The DPPH radical scavenging activities of different parts (leaf, stem, immature fruit, mature fruit and seed) of red bayberry were analyzed by extraction with hot water and 80% ethanol. The highest activity was obtained in the current leaf. Effects of leaf collection time and sex of donor tree on radical scavenging activity of the current leaf were examined. The highest radical scavenging activity was obtained in July. And the activity of leaves from male trees was higher than that of those from female trees.