Caracterização anatômica e química de folhas de Jacaranda puberula (Bignoniaceae) presente na Mata Atlântica
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Data
2008-12-01
Autores
Martins, Maria Bernadete Gonçalves [UNESP]
Castro, Anselmo A. [UNESP]
Cavalheiro, Alberto José [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Farmacognosia
Resumo
A espécie Jacaranda puberula (Bignoniaceae) é conhecida popularmente como carobinha sendo utilizada na medicina popular em comunidades tradicionais. O objetivo deste trabalho foi realizar a caracterização anatômica e química das folhas de J. puberula. Para a análise anatômica utilizou-se a microscopia de luz e microscopia eletrônica de varredura (MEV). Para a análise química utilizou-se a Cromatografia Líquida de Alta Eficiência (CLAE). O mesofilo é dorsiventral, a epiderme unisseriada com cutícula espessa, tricomas glandulares do tipo peltado e tricomas tectores em ambas as faces da epiderme, parênquima clorofiliano com duas a três camadas de células paliçádicas e quatro a cinco camadas de células formando o parênquima lacunoso, de tamanho pequeno, com muitos espaços intercelulares, hipoestomática com nervura pinada. Os estudos através de MEV evidenciaram a epiderme recoberta com cera epicuticular e glândulas peltadas com maior incidência na epiderme da face abaxial, constituídas por oitos células secretoras apicais. A análise cromatográfica do extrato etanólico evidenciou a presença de fitoquinóides e flavonóides.
Jacaranda puberula is popularly known as carobinha and is used in medical practices of many folk communities. The objective of this work was the anatomical and chemical characterization of Jacaranda puberula (Bignoniaceae) leaves. The anatomical analysis was carried through light microscopy and scanning electron microscopy (SEM). For the chemical analysis it was used High Perfomance Liquid Chromatografy (HPLC). Cross and paradermic sections of leaf showed the presence of uniseriate epidermal cells covered by a thick cuticle layer. There are peltate gland trichomes of multicellular type and no gland trichomes (tectores). It was observed that the faces of mesophyll are distinctly. Two to three layers of palisades cells form chlorophylian parenchyma and lacunary parenchyma is formed of four to five layers of small size cells with many intercellular spaces, pinad ribbing, hipoestomatic. The SEM studies evidenced estomata in the abaxial face of the epidermis covered with epicuticular wax. Eight secretory cells covered by cuticle form the peltate gland trichome. The chromatographic analysis of the ethanol extract evidenced the presence of phytoquinoids and flavonoids.
Jacaranda puberula is popularly known as carobinha and is used in medical practices of many folk communities. The objective of this work was the anatomical and chemical characterization of Jacaranda puberula (Bignoniaceae) leaves. The anatomical analysis was carried through light microscopy and scanning electron microscopy (SEM). For the chemical analysis it was used High Perfomance Liquid Chromatografy (HPLC). Cross and paradermic sections of leaf showed the presence of uniseriate epidermal cells covered by a thick cuticle layer. There are peltate gland trichomes of multicellular type and no gland trichomes (tectores). It was observed that the faces of mesophyll are distinctly. Two to three layers of palisades cells form chlorophylian parenchyma and lacunary parenchyma is formed of four to five layers of small size cells with many intercellular spaces, pinad ribbing, hipoestomatic. The SEM studies evidenced estomata in the abaxial face of the epidermis covered with epicuticular wax. Eight secretory cells covered by cuticle form the peltate gland trichome. The chromatographic analysis of the ethanol extract evidenced the presence of phytoquinoids and flavonoids.
Descrição
Palavras-chave
Jacaranda puberula, Carobinha, Bignoniaceae, Anatomia foliar, Cromatografia líquida de alta eficiência, Jacaranda puberula, Carobinha, Bignoniaceae, Leaf anatomy, High performance liquid chromatography
Como citar
Revista Brasileira de Farmacognosia. Sociedade Brasileira de Farmacognosia, v. 18, n. 4, p. 600-607, 2008.