Analysing changes in fruit pigments

Minguez and D. Hornero, Institute de la Grasa (CSIC), Seville 

Some of these phenolic compounds are directly related to colours in plants, and in particular anthocyanidins ate natural pigments present as anthocyanins in plant tissues in glucoside forms with a C6-C3-C6 skeleton. Only a few phenolic compounds absorb tight in the visible range and anthocyanins are the only significant subgroup of polyphenols visible to the human eye (Brouillard et al. 

There are six common variations in the number and position of the hydroxyl and methoxyl substituents on the basic anthocyanidin skeleton (Fig. 10.1 shows 

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