Naslov
High-pressure recovery of anthocyanins from grape skin pomace (Vitis vinifera cv. Teran) at moderate temperature

Autori
Putnik, Predrag ; Bursać Kovačević, Danijela ; Ježek, Damir ; Šustić, Ivana ; Zorić, Zoran ; Dragović-Uzelac, Verica

Izvornik
Journal of food processing and preservation (0145-8892) E13342 (2017); 1-11

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

Ključne riječi
Grape skin pomace ; High hydrostatic pressure extraction ; Anthocyanins

Sažetak
The objective was to evaluate the influences of the high hydrostatic pressure extraction parameters on the recovery of anthocyanins from the grape skin pomace extracts (Vitis vinifera cv. Teran)under moderate temperatures. Studied parameters were: solvents (methanol and ethanol) ; solvent concentrations (30, 50, and 70%) ; pressures (300, 400, and 500 MPa) ; times (3, 6.5, 10 min) ; and temperatures (22, 26, 30 8C). Predominant anthocyanins in all extracts were malvidins (malvidin-3-glucoside as the main compound) representing 55.77% of overall anthocyanin content. The type of solvent did not significantly influence anthocyanin extraction yield, while decreased solvent concentration (increased solvent-to-water ratio) significantly improved extraction of anthocyanins. Increase of pressure enhanced extraction yield of the anthocyanins but temperature showed stronger impact on the anthocyanins recovery. This investigation evidenced that the best conditions for HHPE of anthocyanins from grape pomace were extraction time 3.39 min, extraction temperature 29.48 8C, pressure 268.44 MPa and solvent concentration 70%.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

POVEZANOST RADA