光合细菌中类胡萝卜素对脂质过氧化抑制作用研究  

On Effect of Carotenoids in Photosynthetic Bacteria on Inhibiting Lipid Peroxiation

作　　者：俞吉安[1] 叶永钧 林志新[1] 兰先德[2] 范小兵[2] 

机构地区：[1]上海交通大学生命科学与技术学院 [2]上海交通大学昂立生物医药研究所

出　　处：《上海交通大学学报》1998年第3期107-110,共4页Journal of Shanghai Jiaotong University

摘　　要：光合细菌中的类胡萝卜素有许多不同类型，从Ｒｄ．ｓｐｈａｅｒｏｉｄｅｓＰ４株中提取的类胡萝卜素主要是β－胡萝卜素，而从Ｒｄ．ｃａｐｓｕｌａｔａＮ３株中提取的主要是蕃茄红素．在两个重要离体系统中（即Ｆｅ２＋－牛血清蛋白－亚麻油酸和Ｆｅ２＋－脑组织匀浆），这些类胡萝卜素具有显著的抗脂质过氧化作用，当系统中类胡萝卜素浓度为０．２ｍｇ／Ｌ时，它们对脂质过氧化抑制率接近或超过８０％．进一步研究表明，它们能明显地抑制邻苯三酚的自氧化速率，这证明它们对超氧阴离子也具有很好的淬灭作用．Carotenoids in photosynthetic bacteria have many different type. The main one extracted from Rd. sphacroides P 4 is β carotene, while from Rd. capsutala N 3 is lycopene. In two important systems in vitro (Fe 2+ BSA linolenic acid and Fe 2+ brain homogenat) they (carotenoids extracted from P 4 or N 3) have an effective function of inhibiting lipid peroxiation. When the concentration of carotenoids is in the systems is 0.2 mg/L, the rates of inhibition are nearly or over 80%. The further studies show that they could inhibite the rate of triphenoliclog's self oxiation obviously. It has been proved that they also have good effect on quenching super oxide anion.

关 键 词：光合细菌 类胡萝卜素 脂质过氧化 超氧阴离子 

分 类 号：Q939.1[生物学—微生物学]