文章基本信息

标题：Water-soluble products of UV-irradiated, autoxidized linoleic and linolenic acids
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作者：Nome Baker ; Leon Wilson
期刊名称：JLR Papers In Press
印刷版ISSN：0022-2275
电子版ISSN：1539-7262
出版年度：1966
卷号：7
期号：3
页码：341-348
语种：English
出版社：American Society for Biochemistry and Molecular Biology
摘要：The water-soluble products of the UV-initiated autoxidation of linoleic and linolenic acids emulsified in water were separated into volatile and relatively involatile components, each of which reacted with both thiobarbituric acid (TBA) and peroxidase. The volatile TBA-reactive compound is probably malonaldehyde and the volatile peroxidase-reactive compound is hydrogen peroxide. Additional compounds which absorb UV light were present in the volatile fraction. After thin-layer chromatography of the involatile fraction, reactivity toward TBA and peroxidase was found in the same spot. Approximate molar yields of hydrogen peroxide, malonaldehyde, ``hydroperoxides'', and other TBA-reactive compounds were estimated. The ratio of ``hydroperoxide'' to TBA reactivity was lower for linoleic than for linolenic acid. The mass of relatively involatile compounds was about 20 times greater than that predicted from either peroxidase or TBA assays of water extracts of oxidized linolenic acid. The properties of the water extract were similar to those shown by others for the products of prolonged autoxidation (without UV-irradiation) of emulsified methyl linoleate.
关键词：polyunsaturated fatty acids ; autoxidation ; water-soluble products ; thiobarbituric acid reactivity ; hydrogen peroxide ; hydroperoxides ; metabolic inhibitors ; UV-irradiation