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The goal of this study was to investigate phenolic contents and biological activities in leaves of Diplotaxis tenuifolia collected in Patagonia (Argentina). Anti-glycation activities were tested by bovine serum albumin-glucose (BSA-glu) and Maillard reaction models. Only in the case of water extract of dry matter, Maillard reaction could be 40 % inhibited. The remaining results do not allow make definitive conclusions. Water extracts exhibited higher polyphenol content than methanolic ones (1074.25 and 647.5 mg Gallic acid equivalent/100 g of dry matter, respectively). On the other hand, flavonoid content was comparable between the water and methanolic extracts (218.2 and 213.4 mg quercetin equivalent/100 g of dry matter, respectively). Regarding antioxidant properties, CUPRAC (Cupric reducing antioxidant capacity) showed values of 655.6 mg Trolox equivalent/100 g of dry matter and 749.6 mg ascorbic acid equivalent/100 g of dry matter for water extracts and 1045,2 mg Trolox equivalent/100 g of dry matter and 1203,9 mg ascorbic acid equivalent/100 g of dry matter for methanolic ones. DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging assay displayed values of 203,3 mg Trolox equivalent/100 g of dry matter and 180.0 mg ascorbic acid equivalent/100 g of dry matter for water extracts, and 97.7 mg Trolox equivalent/100 g of dry matter and 89,3 mg ascorbic acid equivalent/100 g of dry matter for methanolic ones. The results obtained highlight the antioxidative potential of D. tenuifolia collected in extreme regions like Patagonia. This edible plant is an antioxidant-rich source that should be considered as functional food, its consumption is recommendable to prevent cell damage by scavenging deleterious free radicals.

Propiedades antioxidante y antiglicosilante de extractos de Diplotaxis tenuifolia