Abstract
The anthocyanin in the blue cornflower (Centaurea cyanus) has been known for many years to be cyanidin 3,5-diglucoside, namely cyanin. However, in the course of this study, it became evident that the major anthocyanin in the blue cornflower is not cyanin but cyanidin 3-succinyl glucoside 5-glucoside. This anthocyanin has not been reported in the literature and is tentatively called “centaurocyanin”. Centaurocyanin is chromatographically identical with the anthocyanin contained in crystalline protocyanin, the blue pigment from the cornflower. thus, there seems no doubt that this anthocyanin, but not cyanin, forms the blue complex pigment protocyanin.
Published Version
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