Abstract
Zeolite imidazole framework is one of the sub-classes of metal-organic frameworks which can enhance the antimicrobial activity of antibiotics against multi-drug resistant (MDR) bacteria. In this study, the authors report nanoscale dual metal cluster-based ZIF-8(Fe) to encapsulate citral. UV-DRS and FTIR spectra confirmed the encapsulation of citral, while PXRD illustrated an average particle size of 36 nm with uniform-sized nanoparticles. Drug encapsulation and loading efficiency of citral into ZIF-8(Fe) were found as 19.30 and 77.20%, respectively, and 40% release of citral was observed within 24 h. The hemolytic potential of ZIF-8(Fe) was found to be less than 5% for 100 µg/mL. The in silico docking studies of citral with dispersin of enteroaggregative E. coli and osmoporin C for Salmonella spp. revealed binding energy (kcal/mol) of –4.67 and –4.53, respectively. Further, the MIC and MBC was found to be 62.50 and 125 µg/mL, respectively.
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This work was supported by a financial grant from National Agricultural Science Fund (ICAR-NASF; NASF/ABA-8007) to SBB, DBR, JV, and NVK.
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The authors declare that they have no conflicts of interest. This article does not contain any studies involving animals or human participants performed by any of the authors.
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Abbreviations: ZIF-8(Fe), zeolite imidazole frameworks with dual metal clusters; MIC, the minimum inhibitory concentrations; MBC, minimum bactericidal concentration; DLE, Drug loading efficiency; DLC, drug loading concentration; MDR, multi-drug resistant; UV-DRS, UV–Vis diffuse reflectance spectroscopy; FTIR, Fourier-transform infrared spectroscopy; PXRD, powder X-ray diffraction; MOF, metal organic frameworks; NPs, nanoparticles; GI, gastrointestinal; EAEC, enteroaggregative E. coli; NTS, non typhoidal Salmonellla; ompC, osmoporin C; DOX, Doxrubicine.
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Abishad, P.M., Jayashankar, M., Namratha, K. et al. Synthesis of ZIF-8(Fe) Functionalized with Citral as Potent Antimicrobial Candidate against Multi-Drug Resistant Enteroaggregative Escherichia coli and Non-Typhoidal Salmonella spp.. Russ J Bioorg Chem 49, 360–366 (2023). https://doi.org/10.1134/S1068162023020036
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DOI: https://doi.org/10.1134/S1068162023020036