Controle de qualidade físico-químico de uma formulação de pomada orabase de Libidibia ferrea ex. Caesalpinia ferrea L

Abstract

Herbal medicines are obtained from medicinal plants, and represent a therapeutic option for the treatment of various diseases. The plant species Libidibia ferrea (L. ferrea) ex. Caesalpinia ferrea L is popularly used and has healing, antifungal and antimicrobial effects scientifically proven. Previous studies have determined the minimum inhibitory concentration of L. ferrea extract that can inhibit the growth of microorganisms present in the oral cavity, which allowed establishing the final concentration of dry matter in the formulation of an ointment containing as active ingredient L. ferrea. The overall objective of this study was the physical-chemical quality control of a orabase ointment formulation of Libidibia ferrea. This is an experimental, controlled, "in vitro" study. Plant samples were derived from the National Institute for Amazonian Research (INPA) and transported to the Faculty of Pharmaceutical Sciences (FCF) of the Federal University of Amazonas (UFAM) for the processing and production of dry extract. For physico-chemical evaluation, centrifuge tests, pH, mass, relative density, microbiological evaluation and organoleptic character of contaminants tests were performed. The physical conditions tested storage were: room temperature (± 25.9 ° C), room temperature, protected from light (± 28.8 ° C) and air conditioning (± 23.7 ° C), the experimental periods were 0, 30 and 60 days. The results of the pH test were analyzed by ANOVA and t-test (p <0.05). The analysis of other results was made using descriptive statistics. The results showed that in the centrifugation test, phase separation was observed at all times (0, 30 and 60 days) and in all storage environments. On the pH test, only the formulation stored at room temperature got a lower pH value, mean (1.95) after 60 days of manipulation. The density test showed the average value of 0.809 g / cm³ when at time 0 and after 30 days of formulation air conditioning values (0,746g / cm³), room temperature (0.702 g / cm³) and room temperature, protected from light, dark (1.022 g / cm³). The evaluation of contaminants showed that there was no bacterial growth in any environment and experimental time, but macroscopically was observed the growth of cotton wool colonies compatible with fungal colonies in stored formulation air conditioning in time of 30 days, and all storage locations time 60 days. On the organoleptic assessment, the ointment showed changes after 60 days of formulation. Based on the results, the formulation tested maintained a better stability of the tested characteristics when stored at room temperature in the dark (dark), however, after 60 days of storage the formulation presented chemical and physical instability and growth of contaminants.