Nonenzymatic Biomimetic Synthesis of Black Tea Pigment Theaflavins
Nonenzymatic Biomimetic Synthesis of Black Tea Pigment Theaflavins
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DOI：
10.1055/s-0036-1588529
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发表时间：
2017-11-01
期刊：
影响因子：
2
通讯作者：
Tanaka, Takashi
中科院分区：
文献类型：
--
作者：
Matsuo, Yosuke;Oowatashi, Ryosuke;Tanaka, Takashi
茶黄素是一种红橙色的红茶色素，含有苯并三酮发色团，其各种生物活性已有报道。茶黄素是由儿茶酚型和邻苯三酚型儿茶素通过双环[3.2.1]辛烷型中间体氧化偶联而产生的。本研究以DPPH自由基为氧化剂，建立了一种新的茶黄素非酶仿生合成方法。
Theaflavins are reddish-orange black tea pigments with a benzotropolone chromophore, and their various biological activities have been reported. Theaflavins are produced by oxidative coupling between catechol-type and pyrogallol-type catechins via bicyclo[3.2.1]octane-type intermediates. In this study, a new method for nonenzymatic biomimetic synthesis of theaflavins was developed using the DPPH radical as an oxidizing agent.