Naslov
Separation of bioactive compounds from tobacco waste using the sequence of supercritical CO2 extraction and subcritical water extraction

Autori
Banožić, Marija ; Gagić, Tanja ; Škerget, Mojca ; Čolnik, Maja ; Jokić, Stela

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Zbornik povzetkov SLOVENSKI KEMIJSKI DNEVI 2019 / Pintar, Albin ; Cerc Korošec, Romana ; Lisjak, Darja ; Lozinšek, Matic ; Novak Pintarič, Zorka ; Valant, Matjaž ; Zupančič, Silvo - Ljubljana : Slovensko kemijsko društvo, 2019, 143-143

ISBN
978-961-93849-6-1

Skup
The 25th Annual Meeting of the Slovenian Chemical Society

Mjesto i datum
Maribor, Slovenija, 25.09.2019. - 27.09.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Recenziran

Ključne riječi
tobacco waste ; supercritical CO2 extraction ; subcritical water extraction

Sažetak
The food and plant industry generate large amounts of wastes or by-products annually around the world from a variety of sources. Improper management and illegal dumping of waste, particularly hazardous and toxic waste, possess increasing threats to the environment and human health. Tobacco waste is a by-products produced in large quantities during processing of tobacco and in most cases, represents an inefficient use of valuable compounds. Tobacco waste (type: scrap) in this study was obtained from “Fabrika Duhana Sarajevo” from Bosnia and Herzegovina. A series of operational parameters of supercritical CO2 (SC- CO2) extraction of tobacco waste (pressure: 100– 300 bar, temperature: 40–80 °C), were investigated in a laboratory scale apparatus in order to get extracts rich in nicotine. The CO2 mass flow rate was kept constant during the process. From reused tobacco waste (after SC-CO2 extraction), subcritical water extraction (SWE) under selected conditions (solvent/solid ratio: 28 mL/g, temperature: 150 ˚C, time: 23 min) was sequentially performed to obtain the extracts rich in phenolic compounds. The content of bioactive compounds was determined using High Performance Liquid Chromatography (HPLC) and by gas chromatography (GC-MS) Obtained extracts of tobacco waste after SC-CO2 extraction were characterized by high levels of nicotine, and after SWE extracts were characterized by a high content of phenolic compounds, considerable amounts of nicotinic acid and nicotinamide and reduced content of nicotine. Also, presence of 5- HMF, furfural and 5-MF was detected in SWE extracts.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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