Abstract
Myrcia guianensis is a plant species found in the Cerrado domain, being called “guamirim”. This work aimed to characterize the chemical profile, physicochemical and antifungal activity of the essential oils from M. guianensis flower and fruit. Flowers and fruits were collected in the morning. Essential oil extraction was carried out by Clevenger, the yield was determined in percentage, the observation of color, aroma and touch was performed by proximal analysis, the relative density was measured by a pycnometer, the solubility was determined in a 70% hidroethanolic solution, and the chemical profile was analyzed by gas chromatography with coupled mass spectrometry. The antifungal activity was performed in different concentrations of essential oil, and the percentage of growth inhibition was determined from Sclerotinia sclerotiorum, Colletotrichum gloeosporioides and Aspergillus flavus. The yield of essential oils varied from 0.08% to 1.01%, colorless and light yellow, density of 0.906 g mL1 and 0.908 g mL1, for flower and fruit, respectively. The antifungal activity varied between 70.71% and 100% for S. sclerotiorum, 10.55% and 89.91% for C. gloeosporioides, and 53.32% and 100% for A. flavus by the flower oil, and between 70.71% and 100% for S. sclerotiorum, 12.45% and 100% for C. gloeosporioides and from 8.37% to 25.12% for A. flavus, by the essential oil from fruit. The essential oils of flowers and fruits showed important chemical and antifungal results for isolated tested fungal.
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