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| Quantitative structure-activity relationships of antimicrobial fatty acids and derivatives against Staphylococcus aureus |
| Hui Zhang, Lu Zhang, Li-juan Peng, Xiao-wu Dong, Di Wu, Vivian Chi-Hua Wu, Feng-qin Feng |
| Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China; ZJU-ENS Joint Laboratory of Medicinal Chemistry, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; Department of Food Science and Human Nutrition, University of Maine, Orono 04469, USA |
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Abstract Fatty acids and derivatives (FADs) are resources for natural antimicrobials. In order to screen for additional potent antimicrobial agents, the antimicrobial activities of FADs against Staphylococcus aureus were examined using a microplate assay. Monoglycerides of fatty acids were the most potent class of fatty acids, among which monotridecanoin possessed the most potent antimicrobial activity. The conventional quantitative structure-activity relationship (QSAR) and comparative molecular field analysis (CoMFA) were performed to establish two statistically reliable models (conventional QSAR: R2=0.942, Q2LOO=0.910; CoMFA: R2=0.979, Q2=0.588, respectively). Improved forecasting can be achieved by the combination of these two models that provide a good insight into the structure-activity relationships of the FADs and that may be useful to design new FADs as antimicrobial agents.
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Received: 20 February 2011
Published: 18 January 2012
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