Naslov
Separation of active compounds from food by- product (cocoa shell) using subcritical water extraction

Autori
Jokić, Stela ; Gagić, Tanja ; Knez, Željko ; Šubarić, Drago ; Škerget, Mojca

Izvornik
Molecules (1420-3049) 23 (2018), 6; 1408, 17

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

Ključne riječi
cocoa shell ; subcritical water extraction ; active compounds

Sažetak
Large amounts of residues are produced in the food industries. The waste shells from cocoa processing are usually burnt for fuel or used as a mulch in gardens to add nutrients to soil and to suppress weeds. The objectives of this work were: (a) to separate valuable compounds from cocoa shell by applying sustainable green separation process—subcritical water extraction (SWE) ; (b) identification and quantification of active compounds, sugars and sugar degradation products in obtained extracts using HPLC ; (c) characterization of the antioxidant activity of extracts ; (d) optimization of separation process using response surface methodology (RSM). Depending on applied extraction conditions, different concentration of theobromine, caffeine, theophylline, epicatechin, catechin, chlorogenic acid and gallic acid were determined in the extracts obtained by subcritical water. Furthermore, mannose, glucose, xylose, arabinose, rhamnose and fucose were detected as well as their important degradation products such as 5- hydroxymethylfurfural (5-HMF), furfural, levulinic acid, lactic acid and formic acid.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Prehrambena tehnologija

POVEZANOST RADA