摘要
采用一种食用有机溶剂溶解儿茶素，而后添加到新鲜的植物油中，比较儿茶素与几种常用的合成抗氧化剂在植物油中的抗氧化效果，并用ＮＤ－１００１ＤＰ测色色差计测定儿茶素的氧化产物对油脂色泽及清亮度的影响。结果显示，儿茶素的抗氧化效力强于ＢＨＴ、ＴＢＨＱ和维生素Ｅ等合成抗氧化剂。不过，儿茶素氧化后对油脂的色泽及清亮度有一定影响，但可通过添加某些有机酸（如柠檬酸等）增效剂加以改善。文中还对儿茶素在植物油中的抗氧化机理和中介物质进行了讨论。
Tea catechins,which were dissolved in edible
organic solvent,were added to fresh plant oil and its antioxidative effect was compared
with several synthetic antioxidants in plant oil.The influences of oxidized tea catechins
on the appearance(color and lightness)of plant oil were examined by using Color
Difference Detector (Model ND-1001DP).Above researches showed that the antioxidative
activity of tea catechins is better than that of synthetic antioxidants such as BHT,TBHQ
and Vitamin E etc.Whereas,the oxidation of tea catechins had deleteriouseffects on the
appearance(color and lightness) of plant oil.But the deleterious effects could be improved
by some orgaic acid synergists(eg.citric acid) of tea catechins added to plant oil.This
paper also discussed the medium and the tea catechins antioxidative mechanism in
plant oil.
出处
《茶叶科学》
CAS
CSCD
1999年第1期61-66,共6页
Journal of Tea Science
关键词
儿茶素
抗氧化作用
植物油
Tea catechinsAntioxidative activityPlant oil
