Abstract − Analytical Sciences, 21(2), 183 (2005).
Adsorption and Desorption Properties of trans-Resveratrol on Cellulose Cotton
Yoshitaka TAKAGAI,* Toshio KUBOTA,* Hidetoshi KOBAYASHI,* Tomoyasu TASHIRO,** Atsushi TAKAHASHI,** and Shukuro IGARASHI*
*Department of Materials Science, Faculty of Engineering, Ibaraki University, Nakanarusawa 4-12-1, Hitachi, Ibaraki 316-8511, Japan
**Sogo Pharmaceutical Co., Ltd., Hebinami 28-3, Johban Shimofunamachi, Iwaki, Fukushima 972-8312, Japan
**Sogo Pharmaceutical Co., Ltd., Hebinami 28-3, Johban Shimofunamachi, Iwaki, Fukushima 972-8312, Japan
The adsorption and desorption properties of trans-Resveratrol (Res) on the cellulose cotton were investigated under various conditions, such as the pH, alcohol percentage, temperature and equilibrium times. Moreover, the acidic-dissociation constants were determined to be pKa1 = 8.01, pKa2 = 9.86 and pKa3 = 10.5 by a curve-fitting method. Also, it was found that the adsorption depended on the temperature and salting effect. On the other hand, the desorptions from cellulose were examined using several kinds of water-miscible organic solvents (methanol, ethanol, acetone and THF).
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