Chemical variability in the essential oils from leaves of Syzygium jambos
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Data
2013-05
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Resumo
Syzygium jambos (L.) Alston, Myrtaceae, occurs in tropical regions and is a
widespread medicinal plant used to treat several diseases, such as hemorrhage, dysentery,
diabetes, infl ammation, diabetes and gastrointestinal disorders. Leaf essential oils of ten
specimens of S. jambos collected from two localities of Central Brazilian Cerrado were
investigated by GC-MS. Soil and foliar nutrients were analyzed to determine the mineral
compositions. The aims of this study was to evaluate the infl uence of environmental
factors on chemical composition of leaf essential oils of S. jambos. Studies on the
infl uence of environmental factors over composition of essential oils are important
because they contribute data for its cultivation, harvest and establish parameters to
essential oil components. The data were analyzed using stepwise Multiple Regression
and Cluster Analysis, and the results suggest that the main factor capable to infl uence the
chemical composition of leaf essential oils was the collection period and the collection
site had a minor effect. The results also suggest that the leaf essential oils composition was
infl uenced mainly by foliar nutrients (N, Mn, Co, Fe, S and Mg) and soil nutrients (Na,
Al, S and H+Al). The compound with the best model obtained was the (E)-caryophyllene,
with a coeffi cient of determination equal 0.8113.
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Palavras-chave
Medicinal plants, Myrtaceae, Seasonality, Mineral nutrients, Statistical analysis
Citação
REZENDE, Wilma P. et al. Chemical variability in the essential oils from leaves of Syzygium jambos. Revista Brasileira de Farmacognosia, Curitiba, v. 23, n. 3, p. 433-440, May 2013.