Determination of anthocyanins, flavonoids and phenolic acids in potatoes. II: Wild, tuberous Solanum species

Abstract

The distribution of anthocyanins, flavonoids and phenolic acids in the tubers (skin and flesh), flowers and leaves of eight wild Solanum species has been compared to that found in coloured, cultivated, S tuberosum. Principal component analysis (PCA) of these results revealed a strong association between the various coloured S tuberosum cultivars with distinct differences from the other wild Solanum species. Similarly, PCA showed that there were close correlations between the tuber skin and flesh components. Diseased tubers of S sanctae-rosae showed large increases in levels of flavonoids and phenolic acids.