Environmental factors affecting the concentration of phenolic compounds in Myrcia tomentosa leaves
Data
2013-04
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Resumo
Myrcia tomentosa (Aubl.) DC., Myrtaceae, found in Central Brazilian
Cerrado and popularly known as "goiaba-brava", belongs to the Myrcia genus, which has
several species with medicinal properties such as: hypoglycemic, diuretic, hypotensive,
antidiarrheal, antimicrobial and antitumor. The present study aimed to analyzed the
environmental infl uence on concentrations of phenolic metabolites in M. tomentosa
leaves. Compounds assayed in the leaves were: total phenols, tannins by protein
precipitation, hydrolysable tannins and total fl avonoids and mineral nutrients, while
soil fertility was also analyzed, all over during one year. The results were submitted to
Pearson Correlation Analysis and stepwise Multiple Regression Analysis to investigate
the relationship between phenolics and environment data. Analysis of variance and
Cluster Analysis allowed indicated a high variability in samples from different sites.
The results obtained suggests that content of phenolics from M. tomentosa leaves are
infl uenced by environmental factors, particularly some foliar nutrients (N l , Ca l and
Mn l ), soil nutrients (Ca s and K s ) and Rainfall.
Descrição
Palavras-chave
Environmental effects, Multivariate analysis, Myrtaceae, Secondary metabolism
Citação
BORGES, Leonardo L. et al. Environmental factors affecting the concentration of phenolic compounds in Myrcia tomentosa leaves. Revista Brasileira de Farmacognosia, Curitiba, v. 23, n. 2, p. 230-238, Mar./Apr. 2013.