Photo-reaction between the metabolic products of perspiration and the dyes on garments

BIOL 144

Liyuan Zhang, lyzhang_sd@mail.dhu.edu.cn1, Dehua Zhuang1, Sen Xu, senxu@mail.dhu.edu.cn2, Zhen Yang1, and Jinxin He1. (1) College of Chemistry and Chemical Engineering, Donghua University, 1882 West Yan-an Road, Shanghai, 200051, China, (2) College of Material Science and Engineering, Donghua University, 1882 West Yan-an Road, Shanghai, 200051, China
Photo-reactions occurring between the metabolic products of perspiration and dyes on garments may produce many toxic substances which could directly contact skins and threaten human health. In our research, the artificial sweat components involved in three international standards (ISO, AATCC and ATTS) were studied, including L-Histidine monohydrochloride monohydrate, D-pantothenic acid, DL-Aspartic acid, sodium chloride, D-glucose, disodium hydrogen phosphate dodecylhydrate and lactic acid. Experiments on the light-perspiration reaction of several typical reactive dyes on cotton were carried out and the test results analyzed based on a statistical method were beneficial to disclose the influences of the sweat components on the photo-reaction of dyes on garments. Among the above components, L-Histidine monohydrochloride monohydrate, DL-Aspartic acid and lactic acid play main roles on the photo-fading of dyes. The mechanism of the photo-reaction between L-Histidine monohydrochloride monohydrate and the dyes is suggested, especially the behavior of the copper ions in some metal complex dyes.
 

Chemistry and Metabolism
4:30 PM-6:30 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster

Division of Biological Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006