Effect of Ulmus Davidiana var. Japonica Nakai Extract on Antibiotic Resistant Bacteria in Dyed Cotton

Abstract

This research verifies stainability, super bacteria antibacterial features and antibiotic resistance of Ulmus davidiana var. japonica Nakai (UD) extract in dye cotton cloth. UD was extracted with hot water, the test cloth dyed, and then processed by mordanting treatment using FeSO4 7H2O, CuSO4 5H2O and Al2(SO4)3. The surface color and color fastness of the three kinds (original cloth, the cloth without mordancy and mor- dant cloth) were measured and the influence of dying of cotton cloth and the mordant method on the gene- sistasis of Methicillin-resistant Staphylococcus aureus (MRSA), antibiotic resistant bacteria. 1. The surface color of the cotton cloth for dyeing (without and with mordancy) displayed a reddish and yellowish color. Stainability was greatest when the mordant of FeSO4 7H2O was used. 2. When a mordant was not used for dyeing, the color fastness to washing, perspiration and friction of the contaminated cloth was satisfactory at 4 to 5 grade in general. 3. As for the antibiotic effect to super bacteria, the growth of germ was meaning- fully suppressed both on the cloth without and with mordancy compared to the comparison cloth; in addi- tion, the dyeing method with the biggest antibacterial impact was found to be the mordancy with the mor- dant of CuSO4 5H2O after dyeing. The results of the experiments that involved dyeing with UD extract showed that cotton cloth processed through mordancy with the mordant of CuSO4 5H2O had the biggest antibiosis to super bacteria and that processed with the mordant of FeSO4 7H2O had the greatest stainability.