The antioxidant properties of lycopene concentrate extracted from tomato paste

被引：42

作者：

Yu, WL ^{[1
]}

Zhao, YP ^{[1
]}

Xue, Z ^{[1
]}

Jin, H ^{[1
]}

Wang, DP ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Technol, Shanghai 200240, Peoples R China

来源：

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY | 2001年 / 78卷 / 07期

关键词：

antioxidant; chemiluminescence; free radicals; lycopene;

D O I：

暂无

中图分类号：

O69 [应用化学];

学科分类号：

081704 [应用化学];

摘要：

Lycopene concentrate (LC) containing 50 wt% lycopene was extracted from tomato paste. The antioxidant properties of LC were evaluated by means of chemiluminescence in four models. The four models were superoxide anions generated from pyrogallol autoxidation, hydroxyl radicals from Fenton reaction, singlet oxygens from OH--NaClO-H2O2, and lipid peroxidation from 2,2 ' -azobis(2-amidinopropane)dihydrochloride-induced gamma -linolenic acid. LC was an effective scavenger toward superoxide anions, hydroxyl radicals, and singlet oxygens, and also it could effectively reduce lipid peroxidation. The 50% efficient concentrations (EC50) toward superoxide anions, hydroxyl radicals, lipid peroxidation and singlet oxygen were 0.75, 0.05, 0.1, and 1 mg/mL, respectively. In addition, changes of antioxidant behaviors with time were investigated. The time requirements of LC for effectively scavenging superoxide anions, hydroxyl radicals, and inhibiting lipid peroxidation were not higher than 6, 6, and 18 s, respectively.

引用

页码：697 / 701

页数：5

共 16 条

[1]

SEPARATION OF CAROTENOIDS IN FRUITS AND VEGETABLES BY HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY [J].