Naslov
Green extraction of grape skin phenolics by using deep eutectic solvents

Autori
Cvjetko Bubalo, Marina ; Ćurko, Natka ; Tomašević, Marina ; Kovačević Ganić, Karin ; Radojčić Redovniković, Ivana

Izvornik
Food chemistry (0308-8146) 200 (2016); 159-166

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

Ključne riječi
Deep eutectic solvent; Grape skin; Green extraction; Microwave; Phenolics; Ultrasound

Sažetak
Conventional extraction techniques for plant phenolics are usually associated with high organic solvent consumption and long extraction times. In order to establish an environmentally friendly extraction method for grape skin phenolics, deep eutectic solvents (DES) as a green alternative to conventional solvents coupled with highly efficient microwave- assisted and ultrasound-assisted extraction methods (MAE and UAE, respectively) have been considered. Initially, screening of five different DES for proposed extraction was performed and choline chloride-based DES containing oxalic acid as a hydrogen bond donor with 25% of water was selected as the most promising one, resulting in more effective extraction of grape skin phenolic compounds compared to conventional solvents. Additionally, in our study, UAE proved to be the best extraction method with extraction efficiency superior to both MAE and conventional extraction method. The knowledge acquired in this study will contribute to further DES implementation in extraction of biologically active compounds from various plant sources.

Izvorni jezik
Engleski

POVEZANOST RADA