Antocianinas y capacidad antioxidante en variedades de papas pigmentadas Solanum stenotomum y Solanum tuberosum spp. andigena.

The present research study aims to characterize and quantify bioactive compounds from red and purplefleshed potatoes (Solanum stenotomum and Solanum tuberosum spp. andigena) from the Apurímac region (Peru). Colorants are extracted by acidic treatment, followed by anthocyanin spectra identification through UVVisible spectroscopy, FTIR-ATR, and HPLC-DAD chromatography. The content of total anthocyanins (CAT) is determined by using the differential pH method, total polyphenols (PFT) by the Folin-Ciocalteu method, and antioxidant capacity by the TEAC-DPPH method. The results show anthocyanic structures: pelargonidin and cyanidin in red-fleshed potatoes, and petunidin, peonidin, and cyanidin in purple-fleshed potatoes. CAT (1.51 to 16.38 mg of cyanidin 3-glucoside/100g), PFT (35.17 to 263.03 mg of gallic acid/100g), and antioxidant capacity (13.01 to 35.95 μmol Trolox/g) show a positive correlation between CAT/PFT and antioxidant capacity. In conclusion, there is evidence of antioxidant capacity in pigmented potatoes, which may encourage their farming and consumption. [ABSTRACT FROM AUTHOR]