Abstract
The indiscriminate use of antifungal agents has led to the advancement of microorganisms tolerant to the various drugs known in the market. Therefore, the search for new compounds and new technologies capable of giving more stable formulations and better pharmacological activities is of paramount importance as an alternative for the development of new therapeutics. However, its effectiveness is directly related to the knowledge of its characteristics in the solid state. Thus, the objective of this work was evaluating the thermal behavior, physicochemical aspects and microbiological of the complexes of inclusion of β-cyclodextrin (BCD) and biphenyl-4-methyl carboxylate (B4CMET). Therefore, differential scanning calorimetry, thermogravimetry, Fourier-transformed infrared spectroscopy, X-ray diffraction and microbiological assay were used to generate robust fingerprint of the inclusion complexes. The results showed the formation of inclusion complexes of B4CMET with βCD, thereby stressing its greater stability and potential use as an antifungal agent against Candida spp. Thus, with thermoanalytical techniques it was possible to observe the increased thermal stability, with FTIR changes of characteristic bands were verified, with XRD the disappearance of diffraction peaks of the B4CMET was verified, and with the microbiological assay it was possible to visualize increased antifungal activity.
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de Lima Ramos Júnior, F.J., da Silva, K.M.A., Brandão, D.O. et al. Investigation of the thermal behavior of inclusion complexes with antifungal activity. J Therm Anal Calorim 133, 641–648 (2018). https://doi.org/10.1007/s10973-018-7040-2
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DOI: https://doi.org/10.1007/s10973-018-7040-2