Canna~Fangled Abstracts

Biorefining of industrial hemp (Cannabis sativa L.) threshing residues into cannabinoid and antioxidant fractions by supercritical carbon dioxide, pressurized liquid and enzyme-assisted extractions.

By June 24, 2018No Comments
Food Chem. 2018 Nov 30;267:420-429. doi: 10.1016/j.foodchem.2017.09.080. Epub 2017 Sep 18.

Abstract

PM 2 site 207C. sativa threshing residues were biorefined by consecutive supercritical carbon dioxide (SFE-CO2) pressurised liquid (PLE) and enzyme-assisted extractions (EAE). SFE-CO2 at optimised parameters yielded 8.3g/100g of lipophilic fraction containing 0.2 and 2.2g of cannabidiol and cannabidiolic acid per 100g of threshing residues, respectively. The recovery of cannabinoids from plant material was >93%. PLE gave 4.3 and 18.9g/100g of flavonoid-containing polar extracts, while EAE added 20.2% (w/w) of water-soluble constituents and increased the release of mono- and disaccharides by up to 94%. Antioxidant capacity of non-polar and polar fractions was in the range of 1.3-23.5mg gallic acid equivalents/g DW and 0.6-205.2mg Trolox equivalents/g DW, with the highest activities of PLE-EtOH/H2O extract. The combined SFE-CO2, PLE and EAE reduced antioxidant capacity of starting plant material by 90-99%, showing that suggested multistep fractionation procedure is efficient in the recovery of a major part of the antioxidatively active constituents from hemp threshing residues.

KEYWORDS:

Antioxidants; Cannabinoids; Enzyme-assisted extraction; Hemp threshing residues; High-pressure extraction

PMID: 29934186
DOI: 10.1016/j.foodchem.2017.09.080

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