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China Surfactant Detergent & Cosmetics ›› 2024, Vol. 54 ›› Issue (10): 1211-1217.doi: 10.3969/j.issn.2097-2806.2024.10.008

• Development and application • Previous Articles     Next Articles

Study on the influences of surfactants on the antibacterial effect of PCMX

Qinggang Liu*()   

  1. Guangzhou Liby Enterprise Group Co. Ltd., Guangzhou, Guangdong 510370, China
  • Received:2023-12-07 Revised:2024-09-24 Online:2024-10-22 Published:2024-10-28
  • Contact: E-mail: 66300610@qq.com.

Abstract:

The solubilization effects of three surfactants, i.e., SDS, AES and AEO9, on PCMX (parachlorometaxylenol) were studied, as well as their combined impact on the antibacterial activity against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. The results indicated that, the binding coefficient of surfactant with PCMX was influenced by the concentration of surfactant in the following order: AEO9>AES>SDS. The influences of surfactants on the antibacterial effect of PCMX were examined through minimum inhibitory concentration (MIC) testing. For the SDS concentrations below its critical micelle concentration (cmc), the MIC of the PCMX complex remained unchanged. However, a further increase in SDS concentration beyond the cmc would lead to a linear increase in MIC. In the case of AES below cmc, the MIC of the PCMX complex was slightly decreased with the concentration of AES, while the AES in the concentration range above cmc would cause a linear increase of MIC. When the concentration of AEO9 was≤1.61 mmol/L, the increase of AEO9 concentration would lead to a decrease in MIC against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. Above the cmc of AEO9, there was a concentration range in which the increase of AEO9 concentration could enhance the antibacterial efficacy of the system. This study might provide valuable insights into the synergism between surfactants and PCMX in antibacterial effectiveness.

Key words: PCMX, surfactant, critical micelle concentration, minimum inhibitory concentration, binding coefficient

CLC Number: 

  • TQ423