Naslov
Separation of active compounds from tobacco waste using subcritical water extraction

Autori
Jokić, Stela ; Gagić, Tanja ; Knez, Željko ; Banožić, Marija ; Škerget, Mojca

Izvornik
Journal of supercritical fluids (0896-8446) 153 (2019); 104593, 8

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

Ključne riječi
tobacco waste ; subcritical water extraction ; active compounds

Sažetak
Three fraction of tobacco waste (scrap, midrib and dust) were subjected to subcritical water in a wide temperature range (150–250 °C), using solvent-solid ratio (10–30 mL/g) for periods from 5 to 25 min in a batch reactor and compared with tobacco leaves to determine the changes in content of compounds during tobacco processing. Optimal extraction conditions were established using RSM. Depending on applied extraction conditions as well as waste fraction, different concentrations of active compounds were determined. Tobacco waste extracts were characterized with high level of nicotine from 0.907 to 4.610%, and considerable amounts of 3, 4 DHBA from 0.118 to 1.249%, chlorogenic acid from 0.033 to 0.507% and rutin up to 0.874%. Moreover, in all extracts some tobacco specific compounds were detected, namely nicotinic acid 0.087-0.846% and nicotinamide 0.095-0.400% as a product of nicotine hydrothermal degradation. At higher temperatures the presence of 5-HMF, furfural and 5-MF was detected.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA