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Issue 6, 2010
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Distillable ionic liquid extraction of tannins from plant materials

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Abstract

A distillable ionic liquid, N,N-dimethylammonium NN′-dimethylcarbamate (DIMCARB), has been employed at room temperature to extract hydrolysable tannin materials from plant sources such as catechu (Acacia Catechu) and myrobolan (Terminalia Chebula). The extraction efficiencies (85%) were found be significantly higher compared to traditional extraction methods which utilise large quantities of water. Moreover, in the ionic liquid extraction method selectively higher concentrations of ellagic acid have been extracted from these raw materials. The results of hyde powder tests have revealed that the extracted materials have higher content of tannins compared to traditional extraction methods and this will be useful for tanning leather. Microbiological tests have shown that the ionic liquid extracted materials possess good shelf life and resist fungal growth.

Graphical abstract: Distillable ionic liquid extraction of tannins from plant materials

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Publication details

The article was received on 05 Nov 2009, accepted on 18 Mar 2010 and first published on 21 Apr 2010


Article type: Paper
DOI: 10.1039/B923248F
Green Chem., 2010,12, 1023-1028

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    Distillable ionic liquid extraction of tannins from plant materials

    S. A. Chowdhury, R. Vijayaraghavan and D. R. MacFarlane, Green Chem., 2010, 12, 1023
    DOI: 10.1039/B923248F

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