Antifungal activities of five chiral ionic liquids - menthoxymethylimidazolium derivates against brown-rot decay fungus (Coniophora puteana), white-rot decay fungus (Trametes versicolor) and blue-stain fungus (Sclerophoma pithyophila) were determined using screening agar-plate method. Results from antifungal tests revealed that 1-butyl-3- menthoxymethylimidazolium chloride exhibited the strongest antifungal activity against wood decay fungi (Basidomycotina) compared with the commercial DDAC. Whereas compound with nine carbons alkyl substituent had strong fungistatic effects. Sclerophoma pithyophila fungus was most resistant to the action of this natural origin ionic liquids. The infrared spectral analysis (FT-IR ATR) confirmed that chiral imidazolium ionic liquids were built into the structure of the treated wood.

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