Effects of high hydrostatic pressure processing and supercritical fluid extraction on bioactive compounds and antioxidant capacity of Cape gooseberry pulp (Physalis peruviana L.)

MARIA JOSE TORRES; ANTONIO VEGA-GÁLVEZ; LÓPEZ JESSICA; KARINA STUCKEN; JULIO ROMERO; DI SCALA KARINA

JOURNAL OF SUPERCRITICAL FLUIDS

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2018 vol. 138 p. 215 - 220

0896-8446

The aim of this study was to combine high hydrostatic pressure (HHP) and SFE-CO2 to extract bioactive compoundswith antioxidant capacity (phenolics and β-carotene) from Cape gooseberry (Physalis peruviana L.) pulp.Extracts were evaluated immediately after processing by HHP at 300?400?500 MPa/1-3?5 min, respectively, andafter 60 days of storage at 4 °C. Treatments at 300 MPa/1 min and 400 MPa/3 min showed an increase of antioxidantcapacity compared to control untreated samples at day 0. Treatments at 500 MPa presented the highestantioxidant capacity (12388.3 μmol TE/100 g d.m.) after storage. Samples treated at 400 MPa/3 min presented ahigh content of total phenols at day 60. The highest β-carotene content was observed at 300 MPa/3 min (5.51 mgβ-carotene/100 g d.m.). Our results indicate that HHP treatments combined with SFE-CO2 can promote activeingredient release in fruit matrices, increasing their bioactivities, as seen with antioxidant activity