In this study, four varieties of cultivated blueberries (Vaccinium corymbosum) and a wild crop (Vaccinium miyrtillus), were examined in order to determine their antioxidant activity as related to their phenolic composition. The antioxidant activity was measured as radical scavenging activity (DPPH* test), ferric reducing activity (FRAP test) and by electrochemical method, while the phenolic composition was determined by colorimetric methods and by HPLC. The fresh fruits were stored at -20°C (to reproduce conditions commonly used in domestic and small processing units) for approximately ten months and changes in the antioxidant composition and antioxidant activity of the fruits were monitored. Fruits were also heat-treated at 100°C, to evaluate effects of thermal processing on their antioxidant profile.
|Titolo:||Antioxidant capacity of cultivated and wild blueberries : effects of processing and frozen storage|
GIOVANELLI, GABRIELLA (Primo)
|Data di pubblicazione:||set-2007|
|Settore Scientifico Disciplinare:||Settore AGR/15 - Scienze e Tecnologie Alimentari|
|Enti collegati al convegno:||CIGR : Section 6|
|Citazione:||Antioxidant capacity of cultivated and wild blueberries : effects of processing and frozen storage / G. Giovanelli. ((Intervento presentato al 3. convegno International Symposium Food and Agricultural Products : Processing and Innovations tenutosi a Napoli nel 2007.|
|Appare nelle tipologie:||14 - Intervento a convegno non pubblicato|