engleski

Supercritical CO2 extraction of hemp (Cannabis sativa L.) seed oil

Through Croatian history hemp was grown and had a large share in the industrial production. Hemp is fully usable with a large range of products, but has been unfairly neglected in the recent decade eitherbecause of the great similarities with Indian hemp or because of interest lobbies. The oil obtained from hemp seeds has great nutritional properties. Fractionation of the oil is very important for makingproducts with physical or nutritional properties of interest in the food industry. Hemp (Cannabis sativa L.) seed oil fractionation with supercritical CO2 at different conditions of temperature and pressure was studied. Hemp seed oil was fractionated into few fractions collected at different time intervals during extraction. Fractionation was performed at following temperatures: 40 and 60 °C and at pressures 300 and 400 bar. The objective of this work was to evaluate the concentration of tocopherols, fatty acidsand chlorophyll a and b in different fractions of hemp seed oil obtained at different extraction process conditions. The composition of hemp seed oil obtained with supercritical CO2 was compared with the hemp seed oil extracted by n-hexane.

hemp oil; supercritical CO2 extraction; fractionation; tocopherols; fatty acids; chlorophill

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