Naslov
Changes in the content of polyphenols and antioxidant capacity of chocolate liqueurs influenced by composition and storage

Autori
Drmic, Helena ; Vojvodic, Aleksandra ; Komes, Drazenka ; Skrabal, Svjetlana ; Busic, Arijana ; Belscak-Cvitanovic, Ana ; Milicevic, Borislav

Izvornik
Technologica acta (1840-0426) 6 (2013), 1; 1-10

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
antioxidants ; chocolate liqueurs ; polyphenols ; storage

Sažetak
With the increasing interest for functional products, liqueurs have become an interesting area of research, trying to confirm the correlation between their chemical composition and benefitial health effects. Chocolate, as a good source of polyphenols, and ethanol, an effective solvent for their extraction, are a good starting point for production of chocolate liqueurs as potential functional products. The aim of this research was to determine changes in the content of polyphenols and antioxidant capacity of chocolate liqueurs produced from chocolates with cocoa solids content of 30 % and 72 % in combination with two concentrations of ethanol (20 % and 30 %) during 3 months of storage. Contents of total phenols, flavonoids, flavan-3-ols and proanthocyanidins were determined spectrophotometrically as well as the antioxidant capacity, using 2, 2-diphenyl-1- picrylhydrazyl (DPPH) free radical scavenging assay. The highest content of total phenols, flavonoids, flavan-3-ols and proanthocyanidins was determined in chocolate liqueur made from chocolate containing 72% of cocoa solids combined with 30% ethanol.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

POVEZANOST RADA