Shokubutsugaku Zasshi
Online ISSN : 2185-3835
Print ISSN : 0006-808X
ISSN-L : 0006-808X
Anthocyanin Pigment from the Red Flowers of Hibiscus Rosa-sinensis L. (Preliminary Report.)
Kozo HAYASHI
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1941 Volume 55 Issue 657 Pages 417-422

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Abstract

The anthocyanin pigment obtained from the dried flower material of Hibiscus Rosa-sinensis L. has been examined. Owing to the partial decomposition of the pigment taken place during drying of the red flower petals, the colouring matter could not be obtained in a crystalline state. The chemical investigations of the amorphous product permit, however, to assign tentatively to the pigment the structure of a cyanidin diglucoside, largely on the basis of colour reactions, distribution numbers, as well as the results of quantitative hydrolysis and fusion with caustic potash.
The crystallisation of the pigment glucoside as well as the determination of the linkage of two glucose residues will be undertaken, as soon as the fresh flower material becomes available.

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© The Botanical Society of Japan
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