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从化学、仿生物、细胞三个层次，水溶、脂溶两种体系研究了脂溶性茶多酚（ＬＴＰ）的抗氧化特性，并与维生素Ｅ（ＶＥ ），绿茶多酚（ＧＴＰ）等进行了比较⒚结果表明：对水溶性体系中的·ＯＨ，巨噬细胞呼吸爆发产生的氧自由基的清除效果为ＧＴＰ＞ ＬＴＰ＞ ＶＥ⒚对大分子稳定的二苯基苦基肼基（ＤＰＰＨ）自由基，ＬＴＰ，ＧＴＰ效果接近且均显著优于ＶＥ⒚在膜体系中，ＧＴＰ对Ｆｅ２＋ 诱导的膜脂质过氧化的抑制作用优于ＬＴＰ，ＶＥ⒚而ＶＥ 对２，２＇偶氮２，４二甲基戊腈（ＡＭＶＮ）诱导的膜脂质过氧化的抑制作用显著优于ＬＴＰ， ＧＴＰ，当浓度大于５０ μｇ／ｍ Ｌ时，ＬＴＰ的抑制作用保持在２５％ 左右并显著优于ＧＴＰ⒚ＬＴＰ基本保留了原有茶多酚优良的抗氧化特性，在脂溶性体系中效果较好⒚同时给出了抗氧化剂在各体系中 ５０％抑制率或清除率时的浓度，即ＩＣ５０ 或ＳＣ５０⒚
The antioxidative properties of liposoluble tea polyphenols (LTP) were studied from the chemical, biological and cellular levels, water-soluble and fat-soluble systems. The antioxidative properties of LTP were also studied with vitamin E (VE), green tea polyphenols The results showed that the scavenging effect on oxygen free radicals produced by respiratory burst of · OH and macrophages in water-soluble system was GTP> LTP> VE⒚, which could stabilize macromolecules of diphenyl picrylhydrazyl (DPPH) free radical , The effects of LTP and GTP are both close to that of VE. In the membrane system, GTP has better inhibitory effect on Fe2 + -induced membrane lipid peroxidation than LTP, VE and VE on 2,2’-azo-2,4 The inhibition of membrane lipid peroxidation induced by dimethylvaleronitrile (AMVN) was significantly better than that of LTP and GTP. When the concentration was higher than 50 μg / mL, the inhibitory effect of LTP remained at about 25% and was significantly better than that of GTP⒚LTP Retain the original antioxidant properties of tea polyphenols in the fat-soluble system better ⒚ at the same time The concentration of antioxidant at 50% inhibition or clearance in each system, ie IC50 or SC50⒚