Estudo das folhas e caule de Hyptidendron canum (Pohl ex Benth.) Harley, Lamiaceae
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2010-05
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Resumo
Hyptidendron canum (Pohl ex Benth.) Harley, Lamiaceae, is popularly used as an
antimalarial, anti-inflammatory, antiulcerative, antihepatotoxic and anticancer agent. The goal of
this research was to perform the morphoanatomy study of H. canum leaves and stem and identify
the main classes of secondary metabolites present in the of H. canum leaves. Such data have not
been reported in the literature. The young leaves and stems were collected in Goiânia (GO), hand
sectioned and prepared for microscope analysis. Reactions were performed for the identification of
secondary metabolites of the dried and pulverized material. The crude ethanol extract was prepared
and then fractioned by liquid-liquid partition with hexane, chloroform and ethyl acetate. Thin
layer chromatography (TLC) analysis was performed on the fractions. The leaf blades presented
adaxial epidermis constituted of polygonal cells with straight walls. On the abaxial epidermis cells
with straight to wavy walls and diacytic and anisocytic stomates were noted. Non-glandular and
glandular trichomes are present on both faces of the leaf blade. The petiole is grooved, and it
presents single layered adaxial and abaxial epidermis. The cross section of the stem presents a
generally quadrangular contour with the presence of non-glandular and glandular trichomes. The
leaf reactions and TLC evidenced the presence of flavonoids, saponins, terpenes and lignanes. This
works helps to increase knowledge of the morphoanatomy and the chemical classes present in H.
canum.
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Palavras-chave
Hyptidendron canum, CCD, Lamiaceae, Morfo-anatomia
Citação
FIUZA, Tatiana de S. et al. Estudo das folhas e caule de Hyptidendron canum (Pohl ex Benth.) Harley, Lamiaceae. Revista Brasileira de Farmacognosia, Curitiba, v. 20, n. 2, p. 192-200, abr./maio 2010.