Abstract
The 7-membered ring compounds, (thujic acid, beta-thujaplicin (hinokitiol), nezukone, gamma-thujaplicin and methyl thujate) distilled from Western Red Cedar (WRC) by high-pressure steam distillation method have antibacterial and antifungal activities. In our present study, we attempted to find a way to provide antbacterial and antifungal functions to the fabrics of paper fibers made of cellulose. Attention was focused on the bonding of thujic acid and beta-thujaplicin with cellulose, and increase the yield of the compounds by adding auxiliary agents or metal ions. It was revealed that the hydroxyl group of beta-thujaplicin reacted not only as carboxylic acid but also as phenol. That characteristic could be attributed to the molecular structure of the hydroxyl group resonating to the carbonyl group of beta-thujaplicin. This reaction was verified by a model experiment. The quantity of those compounds which combined with the fabrics of paper fibers was determined by GC-MS. It was verified that the fabrics of the paper fibers possessed antibacterial and antifungal functions and that these functions remained even after machine-washing.
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