The Pigments of Cottonseed. II. Gossycaerulin, a Blue Quinonoid Gossypol Derivative Occurring in Cooked Cottonseed

The selectivity of hexane isomers towards cottonseed pigments and colour fixed pigments was illustrated by using spectrophotometric analysis of crude, refined and bleached oils, and by refinability and bleachability criteria. Crude cottonseed oil contains besides the alkali-refinable gossypol and gossypurpurin, several colour fixed pigments. Anhydrogossypol, gossyfulvin, anthocyanins and carotenoids seem to be responsible for the colour-fixation of the oil. Only carotenoids are eliminated by bleaching. Selectivities of hexane isomers towards colour fixed pigments are in the following order: isohexane less than n-hexane less than cyclohexane less than benzene less than methylcyclopentane.

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Die Entgiftung von Baumwollsaatkuchen

Delvaux¹

1956

Fette, Seifen, Anstrichm.

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The Pigments of Cottonseed. II. Gossycaerulin, a Blue Quinonoid Gossypol Derivative Occurring in Cooked Cottonseed

Cited by 10 publications

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Gossypol, a Pigment of Cottonseed.

Gossypol, a Pigment of Cottonseed.

Cottonseed Colour Fixed Pigments. Part I. Selectivity of Hexane Isomers

Die Entgiftung von Baumwollsaatkuchen

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