Md Ashaduzzaman, Abdullah Al-Rafin, Nusrat Mustary, Sayed Md Shamsuddin, Studies on Interaction of Lidocaine Drug with Natural Cellulosic Fibres, IJPPE Volume 4, International Journal of Pharmacology, Phytochemistry and Ethnomedicine (Volume 4)
    Naturally engineered cellulosic fibres are of particular interest due to their diverse interfacial behavior; which could be well suited to operating interaction with functionalized drug. In the present work, interaction of Lidocaine (LC) hydrochloride, 2-(diethylamino)-<i>N</i>-(2,6-dimethylphenyl) acetamide was widely studied with cellulosic fibres i.e. cotton, jute and coir in presence of 0.1M HCl aqueous solution. In UV-Vis spectroscopy measurement, it is revealed that the highest interaction (adsorption 18 mg/g of fibres) of LC was occurred onto the cotton fibres surfaces from 3.5 mg/mL aqueous solution after 30 minutes gentle shaking. Kinetic studies in case of cotton fibres showed a linear relationship (R<sup>2</sup> = 0.9987) during desorption of LC upto 30 minutes at 25 °C temperature. The cotton fibres concentration was to be calculated 0.0085 g unit mol/L by considering the unit molecular weight of glucose unit. When 2.5 mg/mL (0.0108 g mol/L) LC drug solution was used then the ratio between glucose unit and LC drug was found to be 1.27. The interaction of LC was also increased direct-proportionally to the weight of cotton fibres. The resulting interaction phenomena of model LC would help us to deign dosage of anesthetic drug for specific physiological conditions.
    Absorption Spectroscopy, Adsorption, Desorption, Drug Interaction, Self-Assembly