Pharmacognostical studies of Portulaca oleracea Linn

Kumar, Bagepalli Srinivasa Ashok; Prabhakarn, V.; Lakshman, K.; Nandeesh, R.; Subramanyam, P.; Khan, Saleemulla; Ranganayakalu, D.; Krishna, Nagireddy Vamshi

doi:10.1590/s0102-695x2008000400005

Cited by 22 publications

(15 citation statements)

References 13 publications

(10 reference statements)

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“…The stomata are paracytic type in leaf. It is consonance with the study of P. grandiflora [18] and Portulaca oleracea [19]. The mesophyll tissue is not differentiated into palisade and spongy mesophyll tissues.…”

Section: Leafsupporting

confidence: 88%

Pharmacognostic Studies on Talinum Portulacifolium (Forssk.) Asch. Ex Schweinf.

Hemalatha¹,

Abirami²

2018

Asian J Pharm Clin Res

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Objective: The present study was undertaken to establish the micromorphological characters of Talinum portulacifolium (Forssk.) Asch. ex Schweinf. belonging to the family Portulacaceae.Methods: The fresh plant parts were selected for micromorphological studies, and the air-dried plant powder was used for powder analysis as per the standard techniques [1-3].Results: Results revealed the presence of diagnostic characters like calcium oxalate crystals in the parenchyma cells of the leaf, which are druses with spiny surface that occurs in ordinary parenchyma cells. Stomata are paracytic which are present in both adaxial and abaxial surfaces of the leaf. The powder contains fragments of leaf epidermis, densely distributed stomata in laminar portions of the leaf.Conclusion: The present study provides the valuable information and also acts as pharmacognostical standards to standardize the study plant scientifically.

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Section: Leafsupporting

confidence: 88%

Pharmacognostic Studies on Talinum Portulacifolium (Forssk.) Asch. Ex Schweinf.

Hemalatha¹,

Abirami²

2018

Asian J Pharm Clin Res

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“…Portulacaceae se caracteriza por possuir estômatos paracíticos, anomocíticos ou diacíticos (CRONQUIST, 1981) sendo que em T. triangulare predomina o tipo anomocítico na epiderme adaxial e o paracítico na epiderme abaxial (Figuras 1A,B), com a presença de câmara subestomática, como pode ser observado na Figura 1C. As características da epiderme de T. triangulare estão em correspondência com o padrão encontrado em Portulaca oleraceae, outra espécie de Portulacaceae (KUMAR et al, 2008). Segundo Mott et al (1982), a característica anfiestomática pode representar o meio de aumentar a taxa fotossintética, por permitir a troca gasosa eficiente, se comparada com outros tipos de folhas.…”

Section: Caracterização Anatômica Da Folhaunclassified

CARACTERIZAÇÃO ANATÔMICA, COMPOSIÇÃO MINERAL E ATIVIDADE CITOTÓXICA DE Talinum triangulare (Jacq.) Willd (PORTULACACEAE)

Brasileiro

Barbosa²,

Jamal³

et al. 2016

CeN

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This study aimed to assess chemical compositions and anatomy of Talinum triangulare extract and its cytotoxic activity in order to improve the knowledge of the specie. Leaves and stem fragments were fixed, sectioned and stained following the usual techniques in anatomy. The phytochemical screening was performed according to classical tests for secondary metabolites detection. Cytotoxicity was evaluated using as model the lethality of Artemia salina larvae. The studied leaf is amphistomatic and presents uniseriate epidermis covered by thin cuticle. The mesophyll is dorsiventral and the midrib consists of collateral vascular bundle. In the apical portion, the stem has vascular bundles delimiting the medular and cortical regions. A stratum of angular collenchyma is found beneath the epidermis. In the basal portion, the stem has about four layers of angular collenchyma and voluminous parenchyma cells internally delimiting the cortex. The phytochemical screening detects the presence of alkaloids, flavonoids, coumarins, terpenes and steroids. The mineral composition showed that the major element found was nitrogen, followed by potassium and magnesium, and the leaves are iron rich. The ethanolic extract did not show toxicity in the larvae of A. salina, with LD50> 1000 ppm, which proves the safe use of this specie in popular therapy.

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“…The therapeutic efficacy of any medicinal plant depends generally on the quality and quantity of the chemical constituents it contains (Majumder, 2011;Kumar and Rathinam, 2013). Information about the efficacy of medicinal plants that were passed from generations to generations after sometime could be incorrect, distorted, or even lost and under such circumstances proper scientific evidence must be established through pharmacognostic evaluation (Sumitra, 2014;Evans, 2009).…”

Section: Introductionmentioning

confidence: 99%