Comparative Evaluation of Triclosan in Selected Anti-bacterial Soaps

Abstract

Background of the topic: Triclosan is a widely used antimicrobial agent in personal care products. Triclosan is readily absorbed into the skin and present in the human tissues and fluids.   But the triclosan showed many side effects including carcinoma. Therefore the determination of triclosan in various personal health care products by simplest analytical methods is very much significant.  Purpose of the study: The present study was aimed to do the comparative evaluation of triclosan in selected soaps and the evaluation was carried out by using ultraviolet spectroscopy. Methods: Comparative evaluation of the selected four anti-bacterial soaps were carried out and the percentage of triclosan was determined by calibration curve method. The analytical technique used was ultra-violet spectroscopy by using the solvent ethanol. The Linearity was tested using the standard triclosan in the range of 300 µg/ml - 1500 µg/ml.   The validation methods such as ruggedness, repeatability, intermediate precision, linearity were done for all the four selected samples. Accurately weighed soap samples and dissolved in 3 ml of water. Transferred this solution into a separating funnel and extracted with chloroform. Organic layer was separated out and pipette out 1 ml of this organic layer and diluted to 10 ml with ethanol. The absorbance of the sample solution was measured at 307 nm. Results: Comparative evaluation of the selected anti bacterial soaps and triclosan content was estimated by UV-spectroscopy. The λmax was found to be 307nm. The method was found to be linear within 300 µg/ml - 1500 µg/ml.  The percentage of triclosan present in selected four samples A, B, C and D were 0.28±0.8772, 0.24±0.9878, 0.32±1.123 and 0.73±0.9932 respectively.  Conclusions: The percentage of triclosan in sample A sample B were within the limit and sample C and sample D slightly higher than that of the safe limit. The method used for the estimation of triclosan was UV spectroscopy method which was validated using ICH guidelines.