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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Pharmacognostic and phytochemical study of the stem and roots from Microgramma squamulosa (Kaulf.) Sota (Polypodiaceae)

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Author(s):
Ivana B. Suffredini [1] ; Elfriede M. Bacchi [2] ; Jane E. Kraus [3]
Total Authors: 3
Affiliation:
[1] Universidade Paulista. Laboratório de Extração - Brasil
[2] Universidade de São Paulo. Faculdade de Ciências Farmacêuticas. Departamento de Farmácia - Brasil
[3] Universidade de São Paulo. Instituto de Biociências. Departamento de Botânica - Brasil
Total Affiliations: 3
Document type: Journal article
Source: REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY; v. 18, n. 2, p. 279-286, 2008-06-00.
Abstract

Pharmacognostic and phytochemical study of the stem and root of Microgramma squamulosa (Kaulf.) Sota. Erva silvina, or Microgramma squamulosa (Kaulf.) Sota belongs to the family Polypodiaceae and is traditionally used as an antiulcer agent. Previous assays showed results that confirm the antiulcer action of the ethanolic extract and some fractions of the stem of M. squamulosa and results showing no significant toxicity in the acute model, both made in rats. Due to the significant results obtained in this previous work, it becomes important to furnish tools to identify the vegetal drug. The species is an epiphyte that bears lanceolate scales totally covering the long-creeping brown-colored stem. Adventicious roots can be seen in the abaxial portion of the stem, while the leaves appear in the adaxial portion. Elements which contribute to the histological identification are: peltate lanceolate -haired scales, sclereids, meristeles (amphicribal bundles) and scalariform tracheids in the stem; strip hairs and sclereids in the roots. Phytochemical screening and TLC analysis showed the presence of flavonoids and tannins which may be related to the antiulcer activity. Results shown may help the identification of the plant as well as the characterization of the fragmented vegetal drug and if it is presented as powder or as extract. (AU)