Time survivor study of Escherichia coli with polyhexamethylene biguanide on cotton

Time survivor or time kill studies are commonly used to investigate the efficacy of antimicrobial agents in homogeneous solutions. Such a study was attempted via a textile treated with an antimicrobial agent. For this study, a finished undyed cotton fabric and a commercially available antimicrobial agent, polyhexamethylene biguanide, were used. The release of the antimicrobial agent from the cotton fabric when submerged in water with a liquor-to-cloth ratio of 20:1 was evaluated. The antibacterial agent-treated cotton fabric was also tested according to the JIS L 1902 absorption antibacterial testing method at various agent concentrations applied to the fabric and incubation times. The treated textile showed a quick release of agent when submerged in water and the results of the antibacterial tests showed increasing antibacterial activity with increases in concentration, as has been found in homogeneous solutions. Fabrics treated with lower concentrations of the agent show bacteriostatic action. A regrowth of microorganisms was additionally noted at certain incubation times

Applications of B-cyclodextrins in textiles

In this paper, the general features of β-cyclodextrin and their applications in the textile industry have been reviewed. The use of β-cyclodextrin in the textile industry is of great significance due to its wide range of application. One of the key aspects is the attachment technique of β-cyclodextrin to the textile's surface. This review deals with this in depth. Some quantification and characterization methods of Textile-β-cyclodextrin are discussed. In the last few years, the new direction in textile research is the functionalisation of textile systems. It is believed that β-cyclodextrin will play a very important role in these new developments. β-cyclodextrin can act as a host for various guest molecules. This enables the development of fabrics that release chemical compounds such as fragrances and antimicrobial agents. It is concluded that there are many possibilities for the development of new textile products with advanced properties based on β-cyclodextrin