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Polymer-Like Polyphenols of Black Tea and Their Lipase and Amylase Inhibitory Activities
http://hdl.handle.net/10069/17916
http://hdl.handle.net/10069/17916d6d3b346-e525-4f53-8b2b-56de011ec386
名前 / ファイル | ライセンス | アクション |
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CPBul56_266.pdf (645.9 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2008-06-30 | |||||
タイトル | ||||||
タイトル | Polymer-Like Polyphenols of Black Tea and Their Lipase and Amylase Inhibitory Activities | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | black tea | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | lipase | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | amylase | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | polyphenol | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | oxidation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | thearubigin | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Kusano, Rie
× Kusano, Rie× Andou, Hisashi× Fujieda, Miho× Tanaka, Takashi× Matsuo, Yosuke× Kouno, Isao |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Lipase and amylase inhibitory activities of black tea were examined. After solvent partitioning of a black tea extract with the ethyl acetate and n-butanol, the two soluble fractions showed comparable inhibitory activities. Activity in the ethyl acetate fraction was mainly attributable to polyphenols with low-molecular weights, such as theaflavin gallates. On the other hand, the active substance in the n-butanol layer was ascertained to be a polymer-like substance. 1H- and 13C-NMR spectra showed signals arising from the flavan A-ring and galloyl groups, although signals due to flavan B-rings were not detected, suggesting that the polymer-like substances were generated by oxidative condensation of flavan B-rings, a result which was previously deduced from our results of in vitro catechin oxidation experiments. Enzymatic oxidation of epicatechin 3-O-gallate produced a similar polymer-like substance and suggested that condensation between a B-ring and galloyl groups was involved in the polymerization reaction. | |||||
書誌情報 |
Chemical & Pharmaceutical Bulletin 巻 56, 号 3, p. 266-272, 発行日 2008-03-01 |
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出版者 | ||||||
出版者 | The Pharmaceutical Society of Japan | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00092363 | |||||
EISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1347-5223 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00602100 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1248/cpb.56.266 | |||||
権利 | ||||||
権利情報 | (c) 2008 The Pharmaceutical Society of Japan | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Chemical & Pharmaceutical Bulletin v.56(3) p.266-272, 2008 |