Phospholipid oxidation catalyzed by ferrous ion and ascorbic acid.
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چکیده
منابع مشابه
Ascorbic acid and copper in linoleate oxidation. II. Ascorbic acid and copper as oxidation catalysts.
Both ascorbic acid and copper were strong prooxidants in the oxidation of linoleate in a buffered (pH 7.0) aqueous dispersion at 37 degrees C. Minimum concentrations at which catalytic activity was detected were 1.3 x 10(-7) m for copper and 1.8 x 10(-6) m for ascorbic acid. For concentrations up to 10(-3) m, the increase in rate of oxidation with increase in concentration of catalyst was great...
متن کاملAscorbic acid and copper in linoleate oxidation. 11. Ascorbic acid and copper as oxidation catalysts
Both ascorbic acid and copper were strong prooxidants in the oxidation of linoleate in a buffered (pH 7.0) aqueous dispersion at 37OC. Minimum concentrations at which catalytic activity was detected were 1.3 X 10-7 M for coppcr and 1.8 X 10-6 M for ascorbic acid. For concentrations up to lop3 M, the increase in rate of oxidation with increase in concentration of catalyst was greater for ascorbi...
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The 1 equiv reaction between ascorbic acid and cytochrome b(561) is a good model for redox reactions between metalloproteins (electron carriers) and specific organic substrates (hydrogen-atom carriers). Diethyl pyrocarbonate inhibits the reaction of cytochrome b(561) with ascorbate by modifying a histidine residue in the ascorbate-binding site. Ferri/ferrocyanide can mediate reduction of DEPC-t...
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Many of the flavor compounds in citrus fruit are synthesized by oxidation-reduction reactions mediated by enzymes in the fruit. The oxidant in some of these reactions is the coenzyme, NADP. One possible way to regenerate this coenzyme to the active oxidized form is through the enzymic oxidation-reduction reactions involving glutathione and ascorbic acid. A system which degrades ascorbic acid in...
متن کاملPhoto-oxidation of ascorbic acid in leaves.
These studies were planned as an extension of previous work (Mapson, 1961a) on investigations into the possible role of ascorbic acid and its oxidized forms as electron carriers in plant respiration, and the present investigation was also carried out with this object primarily in view. The results to be described in this paper suggest that the ascorbic acid system may function as an electrontra...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1984
ISSN: 0002-1369,1881-1280
DOI: 10.1271/bbb1961.48.1275