@article{oai:obihiro.repo.nii.ac.jp:00000364, author = {Kojima, Michiyuki and 小嶋, 道之 and 宮下, 淳一 and 前田, 龍一郎 and 稲川, 裕 and 村松, 裕司}, issue = {11}, journal = {日本食品工業学会誌, Journal of Japanese Society for Food Science and Technology}, month = {Nov}, note = {application/pdf, 2002年~2004年に北海道で栽培されたプラム8品種(アーリーリバー, サンプルーン, ローブドサージェン,チェーアン, オパール,サンタス,パープルアイ,プレジデント)は5%ギ酸メタノールで抽出し,総ポリフェノール量と抗酸化活性を比較した.ポリフェノール量及び抗酸化活性は,収穫年度によって顕著に異なっていた。2002年~2004年を通してチェーアンとサンタスの2品種に含まれるポリフェノールは最も多く含まれていて,両品種共に高い抗酸化活性を示した.また,ポリフェノール単量体と抗酸化活性との聞の相関係数は低かったが,ポリフェノール重合体と抗酸化活性との間の相関係数は高かった.ポリフェノール重合体は, Folin-Denis法による総ポリフェノール量からHPLC分析で定量したポリフェノール量を差し引いた値として求めた.これらの結果は,プラムの持つ主要な抗酸化活性成分は,ポリフェノール重合体であることを示唆している.また, 3年間,雨よけ栽培と露地栽培のプラムに含まれるポリフェノール量を検討したところ,雨よけ栽培した果実に含まれるポリフェノール量は年次変動が少ないことを明らかにした., Plums of 8 varieties (Early Rivers,Sun Prune,Robe de Sargenant,Chairn,Opal,Sunctus,Purple Ais,President) cultivated in Hokkaido in 2002-2004 underwent polyphenol extraction using 5% formic acid methanol, and amounts of polyphenol yielded and antioxidative activity were compared. Significant differences were observed between crops of different years. The Chairn and Sunctus varieties had the highest polyphenol content. These varieties also showed the highest combined antioxidative activity. Although there was a low correlation coefficient between the quantity of polyphenol monomers yielded and antioxidative activity, there was a high correlation between the amount of polyphenol polymers and antioxidative activity. Quantities of polyphenol polymers were calculated by subtracting the quantity of polyphenol detected by the HPLC method from the tota1 amount of polyphenol as calculated by the Folin-Denis method. These results indicate that the main constituents responsible for antioxidative activity in plums are polyphenol polymers. In addition, the polyphenol content of plums cultivated under open-field and closed-field conditions (the latter excludes rain)were examined over 3 years. The results revealed that there was little change in the polyphenol content of closed-field-cultivated fruit throughout the year.}, pages = {507--511}, title = {プラム中の抗酸化活性を有する機能性成分}, volume = {52}, year = {2005} }