Naslov
Pressing and supercritical CO2 extraction of hemp (Cannabis sativa) seed oil

Autori
Aladić, Krunoslav ; Jokić, Stela ; Moslavac, Tihomir ; Vidović, Senka ; Vladić, Jelena ; Šubarić, Drago

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

Izvornik
Book of abstracts of 7th Central European Congress on Food / - , 2014, 41-41

Skup
7th Central European Congress on Food

Mjesto i datum
Ohrid, Sjeverna Makedonija, 21.05.2014. - 24.05.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Key words: hemp seed oil; cold pressing; supercritical CO2 extraction; optimization

Sažetak
Of hemp that is illegal and is used as a narcotic. The objective of this study was to evaluate the oil extraction process from Cannabis sativa seeds by screw pressing followed by extraction with supercritical CO2. In pressing experiments, the response surface methodology was conducted in order to study the effects of temperature, frequency and nozzle size on oil recovery and quality parameters (free fatty acids, peroxide value, insoluble impurities, moisture content). In obtained hemp oil at optimal cold pressing conditions iodine value, saponification value and p-anisidine value were also determined. The optimal condition to obtain the highest oil recovery and the best oil quality within the experimental range of the variables studied was at temperature of 60 0C, frequency of 20 Hz and using nozzle of ID 6 mm. Supercritical CO2 extraction was carried out at new design supercritical fluid extraction system where almost completely oil was extracted from press cake (only 0.39% oil left in the cake after extraction). From the results of this study it can be seen that screw press conditions have big influence on oil quality and oil recovery. Quality of produced hemp oil was satisfactory. The residual oil in the press cake was totally extracted by supercritical CO2. Low temperatures of extraction, reduced energy consumption, high product quality and absence of solvent in extracts are numerous advantages than supercritical fluid extraction technique can provide as opposed to traditional methods of extraction.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

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