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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Procyanidin B2 ： ウィキペディア英語版 Procyanidin B2 Procyanidin B2 is a B type proanthocyanidin. Its structure is (−)-Epicatechin-(4β→8)-(−)-epicatechin. Procyanidin B2 can be found in ''Cinchona pubescens'' (Chinchona, in the rind, bark and cortex), in ''Cinnamomum verum'' (Ceylon cinnamon, in the rind, bark and cortex), in ''Crataegus monogyna'' (Common hawthorn, in the flower and blossom), in ''Uncaria guianensis'' (Cat's claw, in the root), in ''Vitis vinifera'' (Common grape vine, in the leaf),〔(Proanthocyanidin-B2 on liberherbarum.com )〕 in ''Litchi chinensis'' (litchi, in the pericarp),〔(Immunomodulatory and anticancer activities of flavonoids extracted from litchi (Litchi chinensis Sonn.) pericarp. Mouming Zhao; Bao Yang; Jinshui Wang; Yang Liu; Limei Yu; Yueming Jiang, 2007 )〕 in the apple,〔(Proanthocyanidin-B2 on fuzing.com )〕 and in ''Ecdysanthera utilis''.〔(Immunomodulatory Proanthocyanidins from Ecdysanthera utilis. Lie-Chwen Lin, Yuh-Chi Kuo, and Cheng-Jen Chou, 2002 )〕 Procyanidin B2 can be converted into procyanidin A2 by radical oxidation using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals under neutral conditions.〔Conversion of procyanidin B-type (catechin dimer) to A-type: evidence for abstraction of C-2 hydrogen in catechin during radical oxidation. Kazunari Kondo, Masaaki Kurihara, Kiyoshi Fukuhara, Takashi Tanaka, Takashi Suzuki, Naoki Miyata and Masatake Toyoda, Tetrahedron Letters, 22 January 2000, Volume 41, Issue 4, Pages 485–488, 〕 Procyanidin B2 has been shown to inhibit the formation of the advanced glycation end-products pentosidine, carboxymethyllysine (CML), and methylglyoxal (MGO). == See also == * Phenolic content in wine 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Procyanidin B2」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.