LIGHT-INDUCED LIPID PEROXIDATION IN ISOLATED-CHLOROPLASTS AND ROLE OF ALPHA-TOCOPHEROL

被引：27

作者：

YAMAUCHI, R ^{[1
]}

MATSUSHITA, S ^{[1
]}

机构：

[1] KYOTO UNIV,FOOD SCI RES INST,KYOTO 606,JAPAN

来源：

AGRICULTURAL AND BIOLOGICAL CHEMISTRY | 1979年 / 43卷 / 10期

关键词：

D O I：

10.1080/00021369.1979.10863773

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Lipid peroxidation in isolated chloroplasts illuminated by visible light and the role of a- tocopherol in chloroplasts were studied. The TBA reactants and fluorescent products derived from lipid peroxidation were formed by illumination. Peroxidation was inhibited by free radical scavengers and 1C>2 quenchers. Hydroxy methyl octadecanoates, which were the reduced and hydrogenated products of lipid hydroperoxides, were detected. Among them, 10- and 15-hydroxy methyl octadecanoates were generated from i02 oxidation. On the other hand, lipid hydroperoxides did not accumulate in this peroxidation process. The amount of a- tocopherol in the chloroplasts decreased with lipid peroxidation, and a-tocopheryl quinone was produced. The results indicate that a-tocopherol acts as a free radical scavenger for photooxidation of chloroplasts. © 1979 Taylor & Francis Group, LLC.

引用

页码：2157 / 2161

页数：5

共 38 条

[1]

ALLEN CF, 1966, J AM OIL CHEM SOC, V43, P223

[2] COPPER ENZYMES IN ISOLATED CHLOROPLASTS - POLYPHENOLOXIDASE IN BETA-VULGARIS [J].