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Sub-critical carbon dioxide extraction of the hexane extract of the leaves of Tasmannia lanceolata


Garland, SM and Menary, RC, Sub-critical carbon dioxide extraction of the hexane extract of the leaves of Tasmannia lanceolata, Journal of Essential Oil Research, 28, (1) pp. 55-63. ISSN 1041-2905 (2016) [Refereed Article]

Copyright Statement

Copyright 2015 Taylor & Francis

DOI: doi:10.1080/10412905.2015.1083488


The extraction of Tasmannia lanceolata concrete using liquid CO2 at sub-critical conditions of pressure and temperature was investigated. A pilot-scale extractor was modified to include a second liquid metering pump for the recycling of the re-condensed CO2. Phase equilibrium was the controlling thermodynamic element in the rate of oil extraction while mass balance transfer dominated the solubilities of lower molecular weight, non-polar individual components. Polygodial, as the heaviest and highest oxygenated component, had a different apparent solubility to the lower monoterpenes and a solubility minimum was observed for this di-aldehyde at pressures in the order of 110 bar and at temperatures of 20C to 24C. The large variation in density associated with liquid carbon dioxide as it approaches critical temperature and pressure provides for higher selectivity of extraction.

Item Details

Item Type:Refereed Article
Keywords:critical carbon dioxide, liquid carbon dioxide, oleoresin, Tasmannia lanceolata, polygodial, concrete
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Horticultural production
Research Field:Post harvest horticultural technologies (incl. transportation and storage)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural crops
Objective Field:Berry fruit (excl. kiwifruit)
UTAS Author:Garland, SM (Dr Sandra Garland)
UTAS Author:Menary, RC (Professor Robert Menary)
ID Code:105564
Year Published:2016
Web of Science® Times Cited:2
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2016-01-07
Last Modified:2017-11-02

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