Composition and seasonal variation of essential oils of Myrcia obtecta (O. Berg) Kiaersk. var. obtecta, Myrtaceae

Revista Brasileira de Farmacognosia

Simionatto, Edésio Luiz¹  Wisniewski Jr, Alberto¹  Stefanello, Maria Élida Alves¹  UFPR, Curitiba, Brasil¹  Fundação Universidade de Blumenau, Blumenau, Brasil¹  Cervi, Armando Carlos¹ 

关键词: Myrcia obtecta;    Myrtaceae;    essential oil;    seazonal variation;    trans-calamenene;    methyl salicylate.;   

DOI  :  10.1590/S0102-695X2010000100017

来源: Sociedade Brasileira de Farmacognosia

【 摘 要 】

The essential oils isolated by hydrodistillation from leaves and flowers of Myrcia obtecta (O. Berg) Kiaersk. var. obtecta, Myrtaceae, collected bimonthly in Curitiba, Paraná state, Brazil, from October/2005 to August/2006 were analyzed by capillary GC and GC/MS. Fifty-five components were identified in the leaf oils, which were characterized by predominance of cyclic sesquiterpenes (around 70%) and variable amounts of monoterpenes (5.616.7%), aliphatic compounds (0.4-5.5%) and methyl salicylate (0.1-1.5%). The major component in all samples was trans-calamenene (17.0-29.3%). The composition did not show significant seasonal variation, except in October (flowering) when α-terpineol and trans-calamenene peaked (11.2% and 29.3%, respectively). The flower oil was characterized by high content of methyl salicylate (89%).

【 授权许可】

Unknown