Nutritional value, physicochemical characterization and bioactive properties of the Brazilian quinoa BRS Piabiru.

Chenopodium quinoaWilld. is an ancient food crop that has provided nutrition to Andean populations for thousands of years.BRS Piabiruis a quinoa genotype developed and adapted to tropical climate by the Brazilian Agricultural Research Corporation. In this work,BRS Piabiruquinoa was evaluated concerning its nutritional, physicochemical and phenolic composition and also its bioactive properties. This variety showed high carbohydrate and protein contents and a low-fat level, composed of 86% of unsaturated fatty acids, 60% of which are polyunsaturated fatty acids. Four organic acids were detected, with quinic acid as the most abundant, while alpha- and gamma-tocopherols were the vitamin E isoforms found. Quercetin and kaempferol glycosides were the main phenolic compounds in the quinoa extract, which also revealed relevant antioxidant and antimicrobial activities, with no toxic effect. These results support the potential ofBRS Piabiruquinoa as a nutritious food crop and a source of bioactive compounds.