Chemical Composition and Antifungal Activity of Myrcia multiflora and Eugenia florida Essential Oils

The essential oils of three specimens of Myrcia multiflora (A, B and C) and Eugenia florida were extracted by hydrodistillation, and the chemical compositions from the essential oils were identified by gas chromatography and flame ionization detection (CG/MS and CG-FID). The fungicide potential of the EOs against five fungicide yeasts was assessed: Candida albicans INCQS-40175, C. tropicalis ATCC 6258, C. famata ATCC 62894, C. krusei ATCC 13803 and C. auris IEC-01. The essential oil of the specimen Myrcia multiflora (A) was characterized by the major compounds: alpha-bulnesene (26.79%), pogostol (21.27%) and delta-amorphene (6.76%). The essential oil of the specimen M. multiflora (B) was rich in (E)-nerolidol (44.4%), (E)-gamma-bisabolene (10.64%) and (E,E)-alpha-farnesene (8.19%), while (E)-nerolidol (92.21%) was the majority of the specimen M. multiflora (C). The sesquiterpenes seline-3,11-dien-6-alpha-ol (12.93%), eremoligenol (11%) and gamma-elemene (10.70%) characterized the chemical profile of the EOs of E. florida. The fungal species were sensitive to the essential oil of M. multiflora (B) (9-11 mm), and the lowest inhibitory concentration (0.07%) was observed in the essential oil of M. multiflora (A) against the yeasts of C. famata. Fungicidal action was observed in the essential oils of M. multiflora (A) against C. famata, with an MIC of 0.78 mu L/mL and 3.12 mu L/mL; C. albicans, with an MFC of 50 mu L/mL and M. multiflora (C) against C. albicans; and C. krusei, with a MFC of 50 mu L/mL.

Automated summary

The chemical compositions of essential oils from Myrcia multiflora and Eugenia florida were analyzed using gas chromatography and flame ionization detection, and their fungicidal potential against five yeast fungicide species was evaluated. Myrcia multiflora (B) essential oil showed significant inhibitory effect against the fungal species.