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A analise multivariada da composicao quimica dos oleos essenciais das folhas de Eugenia uniflora com diferentes cores de fruto indicou a presenca de tres grupos de oleos em relacao ao biotipo do fruto das amostras. O primeiro grupo incluiu amostras de frutos amarelos, vermelhos escuros e roxos contendo altas percentagens de germacreno B (11,1-30,7%), germacrona (9,8-54%) e atractilona (0-19,9%). No grupo II, com amostras de frutos vermelhos claro, os constituintes majoritarios foram o curzereno (42,0-43,2%), germacreno D (8,7-9,0%) e germacreno A (5,9-8,9%), enquanto que o grupo III incluiu amostras com frutos vermelho-alaranjado, caracterizadas por um alto conteudo de selina-1,3,7(11)-trien-8-ona (40,3-55,4%) e epoxido de selina-1,3,7(11)-trien8-ona (12,7-24,4%). Os oleos essenciais foram investigados frente ao fungo Paracoccidioides brasiliensis pela tecnica de macrodiluicao em caldo. O resultado mais significativo foi obtido com o oleo do grupo II, com a forma leveduriforme de P. brasiliensis sendo inibida completamente na concentracao de 62,5 mg mL -1 . The multivariate chemical analysis of essential oils of Eugenia uniflora leaves with different fruit colours indicated the presence of three oil clusters regarding sample biotypes. The first cluster included yellowish, dark red and purple fruits with high percentages of germacrene B (11.1-30.7%), germacrone (9.8-54%) and atractylone (0-19.9%). In cluster II, with bright red fruit samples, the major constituents were curzerene (42.0-43.2%), germacrene D (8.7-9.0%) and germacrene A (5.9-8.9%), whereas cluster III included red-orange fruit samples containing high contents of selina-1,3,7(11)-trien-8-one (40.3-55.4%) and selina-1,3,7(11)-trien-8-one epoxide (12.7-24.4%). The clustered oils were investigated against the systemic fungus Paracoccidioides brasiliensis via the broth macrodilution method. The oil from cluster II revealed the most significant result. The yeast form of P. brasiliensis was completely inhibited at a concentration of 62.5 mg mL -1

Influence of fruit biotypes on the chemical composition and antifungal activity of the essential oils of eugenia uniflora leaves