NAPHTHAQUINONE PIGMENT IN THE TROPICAL SEA URCHIN DIADEMA ANTILLARUM PHILIPPI

Autor:	N. Millott
Rok vydání:	1957
Předmět:	Pigment biology Diadema antillarum Ecology biology.animal visual_art Botany visual_art.visual_art_medium sense organs General Medicine Orange (colour) biology.organism_classification Sea urchin
Zdroj:	Proceedings of the Zoological Society of London. 129:263-272
ISSN:	0370-2774
DOI:	10.1111/j.1096-3642.1957.tb00289.x
Popis:	Summary. Pigment with the characteristics of a naphthaquinone is widely distributed throughout the body of the echinoid Diadema antillarum. Chromatography indicates that there is a main reddish orange pigment sometimes accompanied by small amounts of a purple pigment. The purified main pigment crystallises in red needles which melt at 223°C, sublime about 200°C, and in acidified ether show absorption maxima at 263/64: 337/39: 462/63 mμ. It appears to be a hydroxynaphthaquinone resembling echinochrome A.
Databáze:	OpenAIRE
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