Inclusion and Release of Hinokitiol into/from MCT-β-CD Fixed
on Japanese Washi Paper |
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Authors: | Takeshi Furuta Youko Kusuya Tze-loon Neoh Lars Rehmann Sun-hwa Beak Hidefumi Yoshii |
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Institution: | (1) Department of Biotechnology, Tottori University, 4-101 Koyamacho-minami, Tottori 680-8552, Japan |
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Abstract: | The potential for surface modification of paper by modified cyclodextrins was demonstrated by the model system of Japanese washi paper and monochlorotriazinyl-β-cyclodextrin (MCT-β-CD). MCT-β-CD was covalently bonded to the paper. The optimal bonded reaction conditions were found to be 10 min at 150 °C with a moisture content of less than 2.5 (g water/g dry paper). The bounded MCT-β-CD on the paper was able to include and release hinokitiol representing the group of antibacterial agents. The maximum molar inclusion ratio of hinokitiol in the immobilized MCT-β-CD was around 0.8. The release rates of hinokitiol, included in the fixed MCT-β-CD, were monitored at 50 °C for different relative humidities. The release rate was strongly influenced by the relative humidity. These results demonstrate that the antibacterial agent can be included and released from MCT-β-CD fixed on the paper. The antibacterial activity of the fixed hinokitiol against airborne microorganisms was demonstrated. |
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Keywords: | antibacterial flavor MCT-β -CD release surface modification |
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