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Consumers are health conscious in order to have a nutritious diet leading to an increase of fruits intake due to their bioactive compounds. To prolong the shelf-life of fruits, dehydration is widely used In this work, the effect of convective dehydration on physico-chemical properties, color, vitamin C, -carotene, total phenolic content (TPC), flavonoids and antioxidant capacity during dehydration of Cape gooseberry (Physalis peruviana L.) fruits in the range 50-90 ºC was investigated. Chromatic parameters (L*, a*, b*) as well as Chroma and Hue angle were affected by drying temperature, which contributed to the discoloring of the fruits during this process. TPC, flavonoids and -carotene increased at 90 ºC from 321.05-356.68 mg gallic acid 100 g-1 dm, 99.25-144.29 mg quercetin equivalents 100 g-1 of dm and 722.30-783.16 mg 100 g-1 sample, respectively. The radical scavenging activity showed higher antioxidant activity at high temperatures rather than at low temperatures. Both, vitamin C content and TPC decreased as air-drying temperature decreased. A high correlation between TPC and flavonoids with antioxidant capacity of the fruits was observed. Based on these results, this fruit is a potential candidate to develop new functional products.Fil: Di Scala, Karina Cecilia. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Departamento de Ingeniería Química; Argentina;Fil: López, Jessica. Universidad de la Serena. Departamento de Ingeniería de Alimentos; Chile;Fil: Vega Galvez, Antonio. Universidad de la Serena. Departamento de Ingeniería de Alimentos; Chile;Fil: Torres, María José. Universidad de la Serena. Departamento de Ingeniería de Alimentos; Chile;Fil: Lemus Mondaca, Roberto. Universidad de la Serena. Departamento de Ingeniería de Alimentos; Chile;Fil: Quispe Fuentes, Issis. Universidad de la Serena. Departamento de Ingeniería de Alimentos; Chile

Effect of dehydration temperature on physico-chemical properties and antioxidant capacity of goldenberry (Physalis peruviana L.)