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  • Title: The anthocyanin responsible for purplish blue flower colour of Aconitum chinense.
    Author: Takeda K, Sato S, Kobayashi H, Kanaitsuka Y, Ueno M, Kinoshita T, Tazaki H, Fujimori T.
    Journal: Phytochemistry; 1994 Jun; 36(3):613-6. PubMed ID: 7765001.
    Abstract:
    The anthocyanin in the purplish blue flowers of Aconitum chinense was identified as delphinidin 3-rutinoside-7-O-(6-O-(4-(6-O-(4-hydroxybenzoyl)-beta-D-glucosyl)oxyb enzoyl- beta-D-glucoside), violdelphin by means of chromatography, FAB-MS including MS-MS, 1H and 13C NMR. The anthocyanin is stable in neutral or slightly acidic aqueous solution and the absorption spectra in the pH range of 4.0-6.2 exhibited three characteristic bands at 534, 569 and 620 nm, which are practically identical with those of purplish blue petals of A. chinense. Thus the purplish blue flower colour is manifested by intramolecular co-pigmentation of the anthocyanin.
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