Leaf Essential Oil fromEugenia luschnathianaandMyrciaria tenella(Myrtaceae) from Two Different Accesses in Southeastern Brazil

The leaf essential oils from Eugenia luschnathiana Klotzsch ex B.D. Jacks. and Myrciaria tenella (DC.) O. Berg growing in two different locations in southeastern Brazil were obtained by hydrodistillation and analyzed by GC and GC-MS. The oil profiles of individual accesses of E. luschnathiana from each location were characterized by the virtual absence of monoterpenes. The sesquiterpenes were of the caryophyllane (32%), guaiane (27%) and cadinane (19%) types in the São Paulo State access and caryophyllane (43%) and cadinane (28%) types in the Rio de Janeiro access. This is the first report on the composition of E. luschnathiana oil. Monoterpenes were predominant in both accesses of M. tenella (57-65%), and sesquiterpenes were mostly represented by the guaiane-eudesmane (16%) or caryophyllene-guaiane types (17%), respectively, in the São Paulo and Rio de Janeiro accesses. In monoterpene composition, the M. tenella oils qualitatively and quantitatively resembled that from a previous access from southern Brazil, whereas the sesquiterpene accumulation showed no similarity to any previous collection in Brazil regarding any favored skeleton type.