Recent advances in the chemosystematics of the monocotyledons

Harborne, Jeffrey B.; Williams, Christine A.

doi:10.1016/0031-9422(94)85004-6

Cited by 13 publications

(5 citation statements)

References 118 publications

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“…Transverse section of petiole of this plant shows a characteristic 'U' shaped or 'semi-circular' arrangement of 7 unequal vascular bundles. Chemical analyses and biological assays are very important aspects in pharmacognostic evaluation of medicinal plants [60][61][62] . Preliminary phytochemical screening of methanolic extract of this plant highlighted that it is rich in phytochemical groups like flavonoids and tannins.…”

Section: Discussionmentioning

confidence: 99%

Anato-Pharmacognostic Studies of Mikania Micrantha Kunth: A Promising Medicinal Climber of the Family Asteraceae

Saha¹,

Mandal²,

Chowdhury³

2015

Int. J. Res. Ayurveda Pharm.

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Present investigation aims to set some parameters for quality control of the crude drug obtained from Mikania micrantha Kunth, a traditionally used medicinal plant for several health conditions throughout the world. Different pharmacognostic parameters like foliar micromorphology, stem and petiole anatomy, xylem element characters, preliminary phytochemical screening, physical constants and UV fluorescence characters have been evaluated following the standard methods. The epidermal cells are irregular in shape and cell wall outline is wavy. The stomata are of anomocytic type. Stomatal index in lower epidermis is 14.48 which is higher than the stomatal index of upper epidermis (4.53). Palisade ratio is 2.47. Trichomes are of glandular and non-glandular types with more than one cell. Vessel elements are with oblique, simple perforation plate. Fibre is a typical libriform type. Tannins, saponins, flavonoids, reducing sugars, etc. have been detected in methanolic extract of the plant powder. Total ash content is 9.05%. In most of the cases findings have been confirmed with previous works on Asteraceae. Some diagnostic features have been identified here which can be employed for easy identification of M. micrantha in its fresh as well as dried form. This study will help in proper identification and in controlling the standard of the crude drug obtained from this ethnomedicinal plant.

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Section: Discussionmentioning

confidence: 99%

Anato-Pharmacognostic Studies of Mikania Micrantha Kunth: A Promising Medicinal Climber of the Family Asteraceae

Saha¹,

Mandal²,

Chowdhury³

2015

Int. J. Res. Ayurveda Pharm.

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“…Harborne e Williams (1994) publicaram uma pesquisa intitulada "Recent advances in the of the monocotyledons", a qual mencionava o gênero Barbacenia como sendo rico em misturas complexas abundantes em flavonoides e em outra pesquisa proposta também por Williams et al (1994) intitulada "Differences in flavonoid patterns between genera within the velloziaceae" reafirmam o gênero como principais produtores desse tipo de molécula. 1 1 1 1 2 1 2 0 2 0 0 1 1 1 1 2 1 2 Ano de publicação…”

Section: Discussão Teóricaunclassified

Prospecção científica e tecnológica: uso de nanopartículas de goma do cajueiro, avaliação das atividades anticolinesterásicas e antioxidantes da espécie vegetal barbacenia blanchetii para aplicação na terapia da doença de Alzheimer

Silva¹

2021

Scire Salutis

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A nanotecnologia é uma ciência que tem ganhado espaço nos últimos anos, principalmente na área médica, farmacêutica e química, pois esta ciência permite a manipulação da matéria na escala atômica e molecular, assim criando novos materiais e desenvolvendo novos produtos na escala nanométrica. No domínio médico-farmacêutico, a nanotecnologia aborda a caracterização, manipulação, preparação e aplicação de estruturas biológicas, em especial as nanopartículas. Sabendo-se que doença de Alzheimer, trata-se de uma afecção neurodegenerativa que acomete cerca de 35,6 milhões de pessoas no mundo todo sendo na maioria idosos, os medicamentos anticolinesterásicos são os mais indicados para o tratamento desta doença, existindo atualmente no mercado 5 fármacos aprovados pela Food and Drug Administration (FDA) para a comercialização e tratamento da doença de Alzheimer, com exceção da memantina. As outras 4 drogas permitidas no tratamento da DA se baseiam na atividade anticolinesterásica, sendo que dessas 4, 2 desses fármacos, a galantamina (Reminyl, Razadyne) e a rivastigmina (Exelon) são de origem natural. No contexto fitoquímico, a espécie vegetal Barbacenia blanchetii que ocorre nos campos rupestres da Chapada Diamantina no Estado brasileiro da Bahia, é rica em flavonoides, onde estudos realizados com esta planta mostraram resultados consideráveis frente à ação anticolinesterásica, principalmente sob a enzima butirilcolinesterase. Diante dessas informações, investigou-se se há o uso de extratos incorporados em nanopartículas, obtidas a partir da goma do cajueiro, e também do óleo essencial extraído dessa espécie vegetal, a Barbacenia blanchetii e suas aplicações na terapia da doença de Alzheimer, por meio de uma prospecção tecnológica nas principais bases de patentes e periódicos, onde não foram encontrados documentos de patentes relacionados a esse vegetal e apenas 1 artigo disponível nos periódicos PubMed e Web of Science.

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“…Here in the petiole, altogether 7 vascular bundles are found and they are arranged in 'U' shaped manner which can be used as a marker for identification of this species of Polygonaceae. Chemical analysis and biological assays are considered as important aspects in pharmacognostic evaluation of the medicinal plants 19,21 . Through phytochemical tests of methanolic shoot extract of this plant, it is found that the important phytochemical groups like alkaloids, glycosides, flavonoids, anthraquinone, tannins, saponins, etc.…”

Section: Discussionmentioning

confidence: 99%

“…Different members of the family Polygonaceae have been studied anatomically by the previous workers with special emphasis on stem and leaf epidermal micromorphology [15][16][17] . Chemical analysis and biological assays are very important aspects in pharmacognostic evaluation of medicinal plants [18][19][20][21] . The detailed pharmacognostic study of this member of the family Polygonaceae has not yet been done.…”

Section: Introductionmentioning

confidence: 99%

Pharmacognostic and Anatomical Studies of Antigonon Leptopus Hook. And Arn.: A Promising Medicinal Climber

Sathi¹,

Chowdhury²

2013

Int. J. Res. Ayurveda Pharm.

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The evaluation of quality and purity of crude drugs by means of various parameters is the most important aspect of pharmacognosy. The present study deals with pharmacognostic characterization of Antigonon leptopus Hook. and Arn. of the family Polygonaceae. The tubers of it are used by the tribal people as tonic and nutritious food. The parameters like micromorphological, anatomical, phytochemical and physical constants have been employed for the pharmacognostical evaluation of different parts of this plant. The stomata are of anisocytic type and amphistomatic. Stomatal indices are 11.08 and 12.13 in upper and lower surfaces respectively. Palisade ratio is 5.5. Trichomes are of both nonglandular and glandular types. Methanolic extracts of leaf indicate presence of alkaloids, flavonoids, tannins, saponins, anthraquinone, etc. Ash value and moisture content of the leaves were found to be 20.68% and 76% respectively. This study will provide some diagnostic features by which the crude drug of this plant can easily be identified.

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Recent advances in the chemosystematics of the monocotyledons

Cited by 13 publications

References 118 publications

Anato-Pharmacognostic Studies of Mikania Micrantha Kunth: A Promising Medicinal Climber of the Family Asteraceae

Anato-Pharmacognostic Studies of Mikania Micrantha Kunth: A Promising Medicinal Climber of the Family Asteraceae

Prospecção científica e tecnológica: uso de nanopartículas de goma do cajueiro, avaliação das atividades anticolinesterásicas e antioxidantes da espécie vegetal barbacenia blanchetii para aplicação na terapia da doença de Alzheimer

Pharmacognostic and Anatomical Studies of Antigonon Leptopus Hook. And Arn.: A Promising Medicinal Climber

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