Abstract

Contrary to what was expected, the spadix, floral parts and berries of Arum maculatum contained only small amounts of the α-carotene series. The floral parts contained β-carotene, diepoxy- β -carotene in fairly large quantities and sometimes lutein. The berries at three different stages of maturity contained a whole range of carotenoids, including lycopene but not neurosporene. These results tend to favour lycopene rather than neurosporene as the precursor which is cyclized to eventually give rise to β-carotene on the one hand and a-carotene on the other. Furthermore, it was shown that as the various parts aged, the control of carotenoid synthesis was removed and epoxy-carotenoids and their derivatives then became apparent.

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