Abstract

The lipids of green and yellow leaves ofAcer platanoides L. have been investigated. Yellow leaves were found to contain phytyl linolenate, a further example of the formation of esters containing terpenoid alcohols and unsaturated fatty acids in yellow autumn leaves. The determination af squalene in leaves of the same tree showed an increase of squalene content during the whole season and the autumn colouration. Regarding the leaf lipids we conclude autumn colouration to be characterized by 3 facts: (1) Lipid degradation, (2) formation of esters and (3) accumulation of lipid intermediates.

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