Essential Oil Constituents and Yields from Leaves ofBlepharocalyx salicifolius(Kunt) O. Berg andMyracrodruon urundeuva(Allemão) Collected during Daytime

Abstract

The purpose of this study was to evaluate the essential oil composition and yield from leaves of two Brazilian species (Myracrodruon urundeuvaandBlepharocalyx salicifolius) harvested during daytime. Essential oils were obtained by steam distillation and had their yield determined.Blepharocalyx salicifoliuspresented yields of 0.049% (9 a.m.), 0.045% (1 p.m.), and 0.069% (5 p.m.). ForMyracrodruon urundeuva, we found 0.13% (9 a.m.), 0.11% (1 p.m.), and 0.08% (5 p.m.). Finally, compound identification and quantification were carried out by GC-MS and GC-FID techniques, respectively. Thirteen major compounds were identified forBlepharocalyx salicifolius, representing 91.6% of the EOs, of whichp-cymene (25.9%) was detected as amajor component. Nine major compounds were identified forMyracrodruon urundeuva, representing 90.3% of the EOs, whereasβ-myrcene showed the greatest concentration (66.4%).