Cyanidin 3.5-diglucoside

Stability of anthocyanins can be attained by self-association, that is, when two or more anthocyanin molecules are associated. This effect was verihed by increasing the concentration of the cyanidin 3,5-diglucoside solution from 10 M to 10 M with a consequent bathochromic shift in maximum wavelength absorption in the visible region. "... 

Colorimetric analyses performed in the reflection mode have been used to determine colors of various flowers" as well as the colors and color development of fruits and berries. In an interesting study, the cyclamen red (or pink) colors of some carnation cultivars have been found to be based on the macrocyclic anthocyanin, pelargoni-din 3,5-diglucoside (6",6" -malyl diester).The CIELAB coordinates revealed that these flowers showed similar colors as some rose cultivars, which, however, were mainly based on a very different pigment, cyanidin 3,5-diglucoside. 

Mazza, G. and Brouillard, R., Color stability and structural transformations of cyanidin 3,5-diglucoside and four deoxyanthocyanins in aqueous solutions. J. Agric. Food Chem. 35, 1987. Roehri-Stoeckel, C. et al.. Synthetic dyes simple and original ways to 4-substituted flavylium salts and their corresponding vitisin derivatives. Can. J. Chem. 79, 1173, 2001. 

Miyazawa, T., Nakagawa, K., Kudo, M., Muraishi, K., and Someya, K., Direct intestinal absorption of red fruit anthocyanins, cyanidin-3-glucoside and cyanidin-3,5-diglucoside, into rats and humans, J. Agric. Food Chem., 47, 1083, 1999. 

Table I. Absorption of Cyanidin-3,5-diglucoside as a Function of the Acidity of the Mixture...

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