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Master's Dissertation
DOI
https://doi.org/10.11606/D.9.2018.tde-16012018-151326
Document
Author
Full name
Vilma Marlene Maciel Mezo
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2005
Supervisor
Committee
Kato, Edna Tomiko Myiake (President)
II, Fernando de Oliveira
Suffredini, Ivana Barbosa
Title in Portuguese
Estudo farmacognóstico comparativo de espécies medicinais de Passiflora L.: P.alata Curtis; P.caerulea L.; P.edulis Sims. forma flavicarpa Degener; P.incarnata L. e P.quadrangularis L.
Keywords in Portuguese
Farmácia
Farmacognosia
Fitoterapia
Passifloraceae (Aplicações terapêuticas)
Passifloras
Plantas medicinais (Estudo)
Abstract in Portuguese
O elevado índice de pessoas afetadas pela ansiedade tem levado os pesquisadores a buscarem novas alternativas de tratamento. A fitoterapia tem empregado medicamentos contendo algumas espécies de Passiflora, conhecidas popularmente como "maracujá". As folhas de P.alata oficializadas na Farmacopéia Brasileira e os órgãos aéreos de P.incarnata, inscrita em farmacopeias estrangeiras, são matéria-prima para a elaboração de diversos medicamentos fitoterápicos. No entanto, as semelhanças morfológicas entre plantas medicinais deste gênero geram erros e falsificações. Considerando este fato, constitui objetivo desta dissertação, o estudo farmacognóstico comparativo de folhas de cinco espécies medicinais: P.alata, P.caerulea, P.edulis, P.incarnata e P.quadrangularis. Embora a forma das folhas de P.alata e de P.quadrangularis seja similar, observam-se caracteres diferenciais como o número de nervuras laterais e glândulas peciolares. P.alata apresenta dois pares de glândulas e P.quadrangularis possui três pares. P.edulis e P.incarnata, espécies semelhantes morfologicamente, diferenciam-se na análise microscópica pelo tipo e frequência de tricomas; localização de estômatos. P.edulis caracteriza-se pela presença de tricomas tectores simples, pouco freqüentes e estômatos na face abaxial. P.incarnata exibe tricomas pluricelulares freqüentes e estômatos em ambas as faces. P.caerulea diferencia-se facilmente das anteriores pela folha provida geralmente de 5 lobos longos e estreitos; acresce-se o parênquima paliçádico que alcança até mais da metade da largura do mesofilo. Fotografias acompanham as descrições bem como as análises cromatográficas comparativas em camada delgada (CCD) e camada delgada de alta eficiência (HPTLC). O controle de qualidade das drogas vegetais é complementado com a quantificação da fração flavonoídica através de método espectrofotométrico e por HPTLC.
Title in English
Comparative pharmacognostic study of medicinal species of Passiflora L.: P.alata Curtis; P.caerulea L.; P.edulis Sims. flavicarpa Degener form; P.incarnata L. and P.quadrangularis L.
Keywords in English
Medicinal plants (Study)
Passifloraceae (Therapeutic applications)
Passifloras
Pharmacotherapy
Pharmacy
Phytotherapy
Abstract in English
The high number of people suffering from anxiety has led reseachers to seek alternative kinds of treatment. Phytotherapy has used medicines containing a few species of Passiflora, popularly known in Portuguese as "maracujá". P alata leaves officially included in the Brazilian Pharmacopoeia and the aerial parts of P. incarnate, listed in foreign pharmacopoeia, are the raw materials to prepare several phytomedicines. However, the morphological similarities of medicinal plants of this kind may lead to errors and fraud. Bearing in mind this possibility, the purpose of this dissertation, is the comparative pharmacognostic study of leaves from five medicinal species - P.alata, P.caerulea, P.edulis, P.incarnata and P. quadrangularis. Although the shape of P.alata and P.quadrangularis leaves is similar, there are different characteristics such as number of side veins and petiolar glands. P.alata has two pairs of glands and P.quadrangularis has three pairs of glands. P.edulis and P.incarnata, which are species with similar structure, appear different in a microscopic analysis due to the types and frequency of their covering trichomes and stomata location: P.edulis typically has infrequent unicellular covering trichomes and stomata on its lower surface. P.incarnata has frequent pluricellular trichomes and stomata on both sides. P.caerulea can be easily distinguished from the aforementioned by its leaves, which are palmately divided in more than half their depth into five lobes; in addition to their palisade parenchyma, which extends to more than half their mesophyll width. Photomicrographs are enclosed with the descriptions, as well as thin layer chromatography and comparative high performance thin layer chromatography (HPTLC). Quality control of crude drugs is further completed with the amount of flavonoid fraction through spectrophotometry and HPTLC.
 
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Publishing Date
2018-01-16
 
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