Characterization and Quantitation of Anthocyanins and Other Phenolics in Native Andean Potatoes

摘要

Andean potatoes are gaining popularity not only for their appealing colors and culinary uses but also for their potential higher content of polyphenolic compounds The objective of this study was to identify potato varieties with increased phenolic content This was achieved through characterization and quantitation of the phenolic composition in 20 varieties of native Andean potatoes from 4 different Solatium species with different colors Major quantitative and qualitative differences among evaluated samples were more dependent on the coloration of the extracted sample rather than on the species The most predominant anfhocyanidms were petumdin 3 coumaroylrutmoside 5 glucoside and pelargonidin 3 coumaroylrutinoside 5 glucoside in purple and red potato extracts, respectively, while chlorogemc acid and its isomers were the main phenolic compund (43% of the total phenolic content) Our study suggested that the appropriate selection of native potatoes could provide new sources of polyphenohcs with health promoting properties and natural pigments with increased stability for food applications