Journal of the American Oil Chemists’ Society

, Volume 62, Issue 9, pp 1387–1390

Antioxidant effects of chlorophyll and pheophytin on the autoxidation of oils in the dark. II. The mechanism of antioxidative action of chlorophyll

  • Yasushi Endo
  • Riichiro Usuki
  • Takashi Kaneda
Technical

DOI: 10.1007/BF02545965

Cite this article as:
Endo, Y., Usuki, R. & Kaneda, T. J Am Oil Chem Soc (1985) 62: 1387. doi:10.1007/BF02545965

Abstract

To understand the mechanism of the antioxidant effect of chlorophyll on the autoxidation of oils in the dark, antioxidant activities of several derivatives of chlorophyll were compared. Antioxidant activities were observed in chlorophyll derivatives such as protopor-phyrin methyl ester and its magnesium chelated compound. Porphyrin seems to be an essential chemical structure for the antioxidant activity of chlorophyll. Chlorophyll did not decompose the hydroperoxides, but reduced free radicals such as 1,1-diphenyl-2-picrylhydrazyl. Electron spin resonance spectrum of the π-cation radical was recorded during the oxidation of chlorophyll in methyl linoleate solution. These observations suggest that chlorophyll may act as a hydrogen donor to break the chain reaction.

Copyright information

© AOCS Press 1985

Authors and Affiliations

  • Yasushi Endo
    • 1
  • Riichiro Usuki
    • 1
  • Takashi Kaneda
    • 1
  1. 1.Department of Food Chemistry, Faculty of AgricultureTohoku UniversitySendaiJapan
  2. 2.Shokei Women’s Junior CollegeSendaiJapan
  3. 3.Koriyama Women’s CollegeKoriyamaJapan