Phytoecdysteroids and flavonoid glycosides among Chilean and commercial sources of Chenopodium quinoa: variation and correlation to physico-chemical characteristics

摘要

BACKGROUND: Little is known about varietal differences in the content of bioactive phytoecdysteroids (PE) and flavonoid glycosides (FG) from quinoa (Chenopodium quinoa Willd.). The aim of this study was to determine the variation in PE and FG content among 17 distinct quinoa sources and identify correlations to genotypic (highland vs. lowland) and physico-chemical characteristics (seed color, 100-seed weight, protein content, oil content).