Intensification of the extraction of medicinal plant materials in an electromagnetic field

1972 ◽  
Vol 6 (12) ◽  
pp. 789-791
Author(s):  
Ya. Z. Rakhman-Zade ◽  
N. U. Rizaev ◽  
M. M. Yusipov
Keyword(s):  
Electromagnetic Field ◽  
Medicinal Plant ◽  
Plant Materials

scholarly journals Biological activity from indigenous medicinal plants of Mauritius

2005 ◽  
Vol 77 (1) ◽  
pp. 41-51 ◽  
Author(s):  
A. Gurib-Fakim ◽  
H. Subratty ◽  
F. Narod ◽  
J. Govinden-Soulange ◽  
F. Mahomoodally
Keyword(s):  
Medicinal Plant ◽  
Plant Extracts ◽  
Biological Properties ◽  
Pharmacological Properties ◽  
Plant Materials ◽  
In Vivo Screening ◽  
Medicinal Plant Extracts ◽  
Minor Ailments

The Mauritian population has a long tradition in the use of ethno-medicine, and the practice is still strong, especially in the treatment of minor ailments. Such interest stems from an existing culture, and many “tisanes” are still prepared from plant materials and sold in several markets around the island.This paper will focus on the various chemical/biological screening techniques currently being used to evaluate the biological properties of medicinal plant extracts. Particular emphasis will be put on extraction and various screening for biological/pharmacological properties. Due consideration will be given to the pharmacological approaches that utilize different animal models for the in vitro and in vivo screening of medicinal plant extracts.

scholarly journals Assessment of the quality of peppermint leaves by thin-layer chromatography in some objects of plant origin

2020 ◽  
Vol 19 (5-6) ◽  
pp. 148-154
Author(s):  
Vali A. Sahratov ◽  
Tamara L. Malkova ◽  
Ludmila N. Karpova ◽  
Anna A. Pospelova
Keyword(s):  
Medicinal Plant ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Biologically Active ◽  
Mentha Piperita ◽  
Plant Origin ◽  
Plant Materials ◽  
Layer Chromatography ◽  
Active Substances

The State Pharmacopoeia of the XIV edition defines the approach for the assessment of the quality of medicinal plant materials, it deals with the identification of the main groups of biologically active substances by thin layer chromatography. According to this approach, the analysis of some types of medicinal plant materials as a part of some objects of plant origin was carried out. The article presents the quality assessment algorithm as examplified by peppermint leaves (Mentha piperita L.), which are part of a variety of plant object.

Interaction Of Folk Medicinal Plant Extracts With Human ɑ2-Adrenoceptor Subtypes

2002 ◽  
Vol 57 (3-4) ◽  
pp. 332-338 ◽  
Author(s):  
Ammar Saleem ◽  
Mia Engström ◽  
Siegfried Wurster ◽  
Juha-Matti Savola ◽  
Kalevi Pihlaja
Keyword(s):  
Medicinal Plant ◽  
Binding Activity ◽  
Binding Assays ◽  
Peganum Harmala ◽  
Plant Materials ◽  
Drug Candidates ◽  
Medicinal Plant Extracts ◽  
Gtpγs Binding ◽  
Competition Binding ◽  
Specific Ligand

Forty-two extracts of folk medicinal plant organs from Pakistan were tested in competition binding assays for their interaction with the specific ligand recognition sites on the human α2-adrenoceptor subtypes α2A, α2B and α2C. Strong binding of the extracts (40 mg/ml) from Acacia nilotica (L.) Delile leaves (88-98% displacement of radiolabel) and Peganum harmala seeds (89-96% displacement) on three subtypes prompted us to extract these plant materials with 40% and 80% methanol, ethanol, and acetone. The extraction results indicated an absence of α2-adrenoceptor binding activity in the stalk of A. nilotica and A. tortils, whereas the leaves of both plants contained activity. The extracts of A. nilotica leaves showed a slight, but consistent, preference for the α2C-adrenoceptor, whereas the leaves of A. tortils were slightly more active on the α2B subtype. The extract of P. harmala stalks was less active than that of its seeds. The binding activities of A. nilotica leaves and P. harmala seeds were mainly concentrated in the water and 30% methanol fractions and further sub-fractions. In a functional activity assay, the active fractions inhibited epinephrine-stimulated 35S-GTPγS binding, thus indicating a predominantly antagonistic nature of the compounds with α2-adrenoceptor affinity in these fractions. Among the known major alkaloids of P. harmala (demissidine, harmaline, harmine, 6-methoxyharmalan, and norharmane), only 6-methoxyharmalan showed moderate affinity (dissociation constant (Ki) of 530 ± 40 nᴍ for α2A subtype). This study is a first systematic attempt towards the discovery of potential drug candidates from these plant materials for treating α2-adrenoceptor related diseases

Review – trace determination of potentially toxic elements in (medicinal) plant materials

2017 ◽  
Vol 9 (10) ◽  
pp. 1550-1574 ◽  
Author(s):  
Michaela Zeiner ◽  
Iva Juranović Cindrić
Keyword(s):  
Medicinal Plant ◽  
Toxic Elements ◽  
Potentially Toxic Elements ◽  
Medical Applications ◽  
Trace Determination ◽  
Plant Materials ◽  
Metal Levels

Since plant materials may contain high amounts of harmful metals, it is important to ensure the safe use of herbs by determining the current metal levels in herbs and their parts used for medical applications.

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