Naslov
Pressing and supercritical CO2 extraction of Camelina sativa oil

Autori
Jokić, Stela ; Moslavac, Tihomir ; Aladić, Krunoslav ; Paulik, Daniela, Vukoja, Josipa ; Prce, Nikolina, Šubarić, Drago

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

Izvornik
49th Croatian & 9th International Symposium on Agriculture / - , 2014, 104-105

Skup
49th Croatian & 9th International Symposium on Agriculture

Mjesto i datum
Dubrovnik, Hrvatska, 16.02.2014. - 21.02.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Camelina sativa oil; screw pressing; oxidative stability; supercritical CO2 extraction homemade system; response surface methodology

Sažetak
The objectives of this work were threefold: (i) to investigate the effects of process parameters during the screw pressing of Camelina sativa seeds on the oil recovery and oil quality ; (ii) to investigate the influence of six different natural antioxidants on the oxidative stability of Camelina sativa oil and (iii) to recover the residual oil from press cake using supercritical CO2 in the new designed and built homemade supercritical fluid extraction system. 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. The optimal condition to obtain the highest oil recovery and the best oil quality within the experimental range was at temperature of 52 °C, frequency of 20 Hz and using nozzle of ID 9 mm. The experimental values agreed with those predicted, thus indicating suitability of the used models and the success of response surface methodology in optimizing the pressing conditions. Obtained camelina oil indicated desirable quality as it had very small percentages of moisture, insoluble impurities, free fatty acids, low peroxide and p-anisidine value. The rosemary extract Oxy.Less CS in concentration of 0.3% was the most effective in protecting the oil from oxidative deterioration. This study also showed that was possible to design and build a supercritical fluid extraction system low cost compared to similar commercial systems and the residual oil in press cake was almost totally extracted with CO2 in this homemade system.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

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