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Journal of Food Science and Technology

, Volume 52, Issue 3, pp 1748–1753 | Cite as

Effect of ultrasound pre-treatment of hemp (Cannabis sativa L.) seed on supercritical CO2 extraction of oil

  • C. Da PortoEmail author
  • A. Natolino
  • D. Decorti
Original Article

Abstract

Ultrasound pre-treatment of intact hemp seeds without any solvent assistance was carried out for 10, 20 and 40 min prior to SCCO2 extraction at 40 °C, 300 bar and 45 kg CO2/kg feed. Sonication time effect on SC-CO2 extraction was investigated by the extraction kinetics. The maximum extraction yield was estimated to be 24.03 (% w/w) after 10 min of ultrasonic pre-treatment. The fatty acid compositions of the oils extracted by SC-CO2 without and with ultrasound pre-treatments was analyzed using gas chromatography. It was shown that the content of linoleic, α-linolenic and oleic acids (the most abundant unsaturated fatty acids) of the hemp seed oils were not affected significantly by the application of ultrasound. UV spectroscopy indices (K232 and K268) and antiradical capacity were used to follow the quality of oils. Significant were the changes in their antiradical capacity due to ultrasound treatment. A comparison with the oil extracted by Soxhlet was also given.

Keywords

Hemp seed Oil Ultrasound Supercritical CO2 extraction 

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Copyright information

© Association of Food Scientists & Technologists (India) 2013

Authors and Affiliations

  1. 1.Department of Food ScienceUniversity of UdineUdineItaly

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