Valuable Utilization of Natural Products and the Modification to Functional Clothes

近年来，人们对天然色素的化学性质越来越感兴趣，特别是随着天然色素的使用越来越多。虽然单线态氧猝灭剂对合成颜色的贡献以前已经被一些工作者研究过，但关于使用单线态氧猝灭剂作为提高天然颜色耐光性的手段的研究很少。在醋酸纤维素薄膜中，研究了不同添加剂对红花素光褪色的影响。单线态氧敏化剂的加入加快了染料的褪色速度，而DABCO的加入则延缓了染料的褪色速度。此外，受阻酚的加入也抑制了反应速率。这些结果表明，自由基和单线态氧参与了红花素的光化学氧化。羟基磺酸镍的存在显著抑制了颜色的褪色速度。保护环境和人类健康现在被认为比企业的盈利能力和效率更重要。因此，研究了镍盐的抗菌活性。在这项研究中使用的镍芳基磺酸盐对这两种细菌都没有活性。因此，本文所发现的提高天然色牢度的成功技术对环境和人体健康都是安全的。此外，还研究了柠檬酸DP整理对棉织物颗粒土污染的影响，以及紫薯色和无垢子的利用价值。

Interest in the chemistry of natural colors has increased in recent years, particularly with the increased use of naturally occurring pigments. While the contribution of singlet oxygen quenchers to synthetic colors has been investigated previously by several workers, there have been few studies pertaining to the use of singlet oxygen quenchers as a means of improving the light fastness of natural colors. In this study, the influence of various additives on the photo-fading of carthamin has been examined in cellulose acetate film. The rate of fading was accelerated by adding a singlet oxygen sensitizer, and retarded in the presence of DABCO.Furthermore, the rate was also suppressed by addition of hindered phenol. These results suggest the involvement of free radicals and singlet oxygen in the photochemical oxidation of carthamin. The rate of fading of the color was remarkably suppressed in the presence of nickel hydroxyarylsulfonates. Protection of the environment and human health is now perceived as more important than the profitability and efficiency of a business. The antimicrobial activity of the nickel salts was therefore investigated. None of the nickel arylsulfonates used in this study showed activity against either bacteria. Accordingly, the successful technique for improving light fastness of natural colors discovered here was safe for the environment and human health.In addition, the effect of citric acid DP finishing on soiling with particulate soil of cotton fabric, and valuable utilization of Purple sweet potato color and Sapindus mukurossi Gaertn also were studied in this work.