Analysis on chemical constituents and nutritional evaluation of eight wild edible plants collected in Hanzhong
YANG Ying1, WANG Kun2, GAO Ren-jie3, HOU Yuan-lin1, ZHOU Fang1, DUAN Yu-feng1*
(1 College of Food Engineering and Nutritional Science,Shaanxi Normal University, Xi′an 710062, Shaanxi, China;2 Yangling Quality and Technical Testing and Inspection Institute,Yangling 712100, Shaanxi, China;3 College of Life Science, Shaanxi Normal University, Xi′an 710062,Shaanxi, China)
Abstract:
Eight wild edible plants collected in Hanzhong were analyzed for nutritional elements and phytochemical constituents including Staphylea bumalda etc, with antioxidant activity in vitro of their ethanol extractions were evaluated. Results showed there were differences among proximate compositions, amino acids and beneficial minerals of eight wild edible plants. The contents of Pb and Hg were found below the limit values. Tryptophan was the first limiting amino acid in Lycoris radiata and Sedum sarmentosum while methionine and cysteine were both the first limiting amino acid in the other wild edible plants. Their ethanol extractions except L.radiata demonstrated high antioxidant activities with FRAP value exceeding 300 μmol/g and DPPH· scavering capacity exceeding 50%, which were positively correlated to their total phenolics content significantly(R2=0.861 7 and 0.914 5, P
KeyWords:
wild edible plants; nutritients; phytochemicals; antioxidant activity in vitro; correlation analysis
