摘要
选取FeCl3、Fe2(SO4)3、Fe(NO3)3三种化合物为氧化剂,对茶多酚酸性氧化制备茶黄素进行研究。结果表明,茶多酚在FeCl3、Fe2(SO4)3、Fe(NO3)3三种酸性氧化剂条件下均可氧化形成茶黄素(TFs),且在酸性氧化剂浓度为40mg/ml时,茶黄素生成量最高。实验还就茶多酚酸性氧化机理进行了讨论。
FeCl3, Fe2(SO4)3 and Fe(NO3)3 were chosen as acidic oxidants. The oxidation of tea polyphenols together with acidic oxidant was studied. Results showed that tea polyphenols can be oxidized and theaflavins (TFs) are formed under the catalysis of FeCh, Fe2(SO4)3 or Fe(NO3)3 with the highest content of theaflavins produced at 40 mg/ml of acidic oxidant. The oxidative mechanism of tea polyphenols by acidic oxidant was also discussed.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2008年第1期50-54,共5页
Food Science
基金
国家自然科学基金项目(30570191)
浙江省自然科学基金项目(Y304477)
关键词
茶多酚
酸性氧化
茶黄素
氧化机理
tea polyphenols
acidic oxidation
theaflavins
oxidative mechanism