Essential oils in aerial parts of Myrcia tomentosa: composition and variability

Revista Brasileira de Farmacognosia

Fabyola A. S. Sá²  Leonardo L. Borges²  Joelma A. M. Paula¹  Bruno L. Sampaio²  Pedro H. Ferri¹  José R. Paula² 

[1] ,Universidade Federal de Goiás Faculdade de Farmácia Laboratório de Pesquisa em Produtos Naturais,Brazil

关键词: bicyclogermacrene;    goiaba-brava;    myrtaceae;    PCA;    seasonality;   

DOI  :  10.1590/S0102-695X2012005000120

来源: SciELO

【 摘 要 】

Species in the Myrtaceae family are used in folk medicine to treat gastrointestinal disorders, infectious diseases and hemorrhagic conditions and are known for their essential oil contents. Gas chromatography coupled with mass spectrometry (GC-MS) was used to characterize the chemical composition of essential oils of the leaves, stem bark and flowers of Myrcia tomentosa (Aubl.) DC., as well as to assess the chemical variability in the constituents of the essential oils of the leaf. Soil and foliar analyses were also performed to determine the mineral compositions. Principal component analysis (PCA) was used to examine the interrelationships between the obtained data. The most abundant component in the essential oils of the flowers was (2E,6E)-methyl farnesoate, whereas hexadecanoic acid was the most abundant essential oil component in the stem bark. The leaf essential oils showed seasonal variation in their chemical composition, with bicyclogermacrene and (2E,6E)-methyl farnesoate as the major chemical components. Forty-four constituents were identified, and only nine compounds were found in all of the samples. Sesquiterpenes were mainly produced in the flowers and leaves. The PCA showed a positive correlation between the oxygenated sesquiterpenes and the foliar nutrients Cu and P. Significant statistical correlations were verified between the climatic data, foliar nutrients and essential oil compositions.

【 授权许可】

CC BY-NC-ND   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License