Supercritical CO2 extraction as an effective pretreatment step for wax extraction in a miscanthus biorefinery

Attard, T. M., McElroy, C. R., Gammons, R. J. , Slattery, J. M., Supanchaiyamat, N., Kamei, C. L. A., Dolstra, O., Trindade, L. M., Bruce, N. C., McQueen-Mason, S. J., Shimizu, S. and Hunt, A. J. (2016) Supercritical CO2 extraction as an effective pretreatment step for wax extraction in a miscanthus biorefinery. ACS Sustainable Chemistry & Engineering, 4 (11). pp. 5979-5988. ISSN 2168-0485

Full content URL:

Full text not available from this repository.

Item Type:Article
Item Status:Live Archive


The use of supercritical carbon dioxide (scCO2) to extract valuable lipophilic compounds from miscanthus was investigated and subsequent enzymatic saccharification was carried out to determine the impact of scCO2 extraction on downstream processing of miscanthus. Two miscanthus genotypes (Miscanthus x. giganteus and Miscanthus sinensis) were investigated and characterized. A diverse range of molecules were detected including long-chain hydrocarbons, fatty acids, n-policosanols, aldehydes, wax esters, sterols and steroid ketones. Quantification data indicates that there is a considerable difference among each species in the quantities of specific compounds. The waxes also exhibited significant differences in melting temperature, thus illustrating the opportunity for utilization in various applications. In addition to the isolation of valuable chemical compounds, the scCO2 pretreatment also had a beneficial effect on the downstream processing of the biomass. The total sugars released after saccharification was found to increase by around 20% when coupled with scCO2 extraction, as compared to untreated samples.

Keywords:Carbon dioxide, Chemical compounds, Fatty acids, Ketones, Saccharification, Supercritical fluid extraction, Waxes, Downstream-processing, Enzymatic saccharification, Lipophilic compounds, Long chain hydrocarbons, Miscanthus, Miscanthus sinensis, Supercritical, Supercritical carbon dioxides, Extraction
Subjects:F Physical Sciences > F100 Chemistry
Divisions:College of Science > School of Chemistry
Related URLs:
ID Code:54761
Deposited On:04 Jul 2023 14:47

Repository Staff Only: item control page