Lipoxygenase Activity and Content of 1, 4-Pentadienic Fatty Acids of Satsuma mandarin(Citrus unshiu Marc.)

Abstract

The contents of 1, 4-pentadienic fatty acids, linoleic and linolenic acids, of Satsuma mandarin fruits were investigated in correlation to lipoxygenase activity in the year of 1975-1976. The fruits were periodically collected from one settled Satsuma mandarin tree in Yamakita, Kanagawa Prefecture. The moment when the content of the 1, 4-pentadienic acids in the carpel and pericarp of the fresh fruits reached maximum was in the middle of November when lipoxygenase activities also reached maximum. The 1, 4-pentadienic acid content and lipoxygenase activity of the stored fruits increased during the storage period, both in carpel and pericarp.