November 2013
Antiviral activity of the crude n-hexane extract from leaves of Piper lepturum var. angustifolium (C.DC.) Yunck. (Piperaceae)
Piper lepturum var. angustifolium (C.DC.) Yunck. belongs to the family Piperaceae which is widely found from North to South of Brazil. Crude n-hexane extract from leaves of P. lepturum var. angustifolium was assayed to anti-herpes simplex viruses (HSV) activity against HSV-1 and HSV-2 in cell cultures, incubated at 37°C for 48 h in a 5% CO2 atmosphere. Chemical profile of the extract was performed in a Shimadzu high...
November 2013
In vitro antioxidant activity of Guibourtia tessmannii Harms, J. Leonard (Cesalpinoidae)
The in vitro antioxidant activity of aqueous and hydroethanolic extracts of Guibourtia tessmannii was evaluated by determination of flavonoid, anthocyanidins and tannins content. Scavenging activity on NO° and OH° radicals, metal chelating activity and antilipoperoxidative activity (thermal and chemical peroxidation of olive oil and hepatic lipid peroxidation) were also carried out. Results have shown that...
November 2013
Toxicity studies on Harpagophytum procumbens (Devil's claw) capsules in mice
Acute (24 h) and chronic (90 days) oral toxicity studies on Harpagohytum procumbens (Devil’s claw) capsules manufactured by Boiron (France), were carried out. Male and female mice were used as experimental model. Acute dosages were: 0.5, 1.0 and 3 g/kg while chronic dosage was 100 mg/kg per day of the capsule contents. All morphological, biochemical, haematological and spermatogenic changes, in addition to...
November 2013
Influence of cytokinins, sucrose and pH on adventitious shoot regeneration of Polyscias balfouriana (Balfour aralia)
A highly reproducible and efficient in vitro shoot regeneration system was developed for Polyscias balfouriana using apical shoot tips as explants. Explants after surface sterilization were cultured on Murashige and Skoog (MS) (1962) medium supplemented with different concentrations (0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4 and 1.6 mg/l) of 6- Benzylamino purine (BAP), Thidiazuron (TDZ) and Kinetin (Kin), alone as well as in...
November 2013
Antiplasmodial and repellent activity of indigenous plants used against malaria
Aqueous and organic extracts from Desmodium velutinum (Willd) DC (Fabaceae), Combretum molle R.Br ex G. Don, Combretum sericeum G. Don (Combretaceae), Bidens engleri O.E.Schulz (Asteraceae), Cucumis metuliferus E. Mey. ex Naudin, Cassia podocarpa Guill. et Perr. (Ceasalpiniaceae), and Opilia celtidifolia Guill. & Perr. (Opiliaceae) from Burkina Faso were prepared and tested in vitro against Plasmodium falciparum...
November 2013
Ultraviolet-B (280-320 nm) enhanced radiation induced changes in secondary metabolites and photosystem-II of medicinal plant Withania somnifera Dunal.
This study investigated supplemental UV-B radiation effects on medicinal plant Withania somnifera. Photosynthetic pigments decreased upon exposure to UV-B radiation. Non photosynthetic pigments anthocyanin was enhanced by UV-B treatment. Similar changes were also noted in the photochemical activities (PS I and PS II). Photosystem II (PS II) core complex of higher plants and cyanobacteria is composed of more than 20...
November 2013
Evaluation of the quality of steamed yogurt treated by Lavandula and Chamaemelum species essential oils
Yoghurt is a fermented milk known with considerable development in Algeria and worldwide. The physicochemical, microbial and organoleptic qualities of a milk-derived product manufactured in the milk factory of Tizi in Mascara city North West of Algeria and enriched with two commercial essential oils extracted from Lavandula and Chamaemelum species were of great interest. Yoghurt samples were analyzed for some physical,...
November 2013
Determination of cardiac glycosides in Scilla bifolia (Liliaceae) by two different analytical techniques: Thin Layer Chromatography (TLC) and High Performance Liquid Chromatography - Mass Spectrometry (HPLC-MS)
In this study was performed chemical analysis on alcoholic extracts of the Scilla bifolia (Liliaceae family) species harvested from spontaneous flora, with the purpose of determining bioactive cardiac glycosides, particularly proscillaridin A. The used analysis techniques were thin layer chromatography (TLC) and high performance liquid chromatography coupled with mass spectrometry (HPLC-MS). After performing TLC...
November 2013
The effect of the aqueous extract of Myrcia guianensis (AubL) DC and its fractions against the hemorrhagic activity of Bothrops jararaca venom
Brazilian folk medicine utilizes the shrub Myrcia guianensis against various snake venom effects. This work aimed to assess the therapeutic potential of aqueous, ethyl acetate and hexane leave extracts of M. guianensis and its aqueous residue against the hemorrhagic activity of Bothrops jararaca venom. In vivo assays were carried out by dorsal intradermic injections of the crude venom in Swiss mice. The in vitro effect...
November 2013
Ethnomedicinal plants of Chamba district, Himachal Pradesh, India
Importance of medicinal plants in traditional healthcare practices provides clues to new areas of research and biodiversity conservation is now well known. However, information on the use of plants for medicinal purpose is lacking from many tribal areas of Himachal Pradesh. Keeping this in view, the present study was undertaken in a tribal dominated area of Chamba district, to look for the diversity of plant resources,...
November 2013
Salicylic acid-induced changes to growth, flowering and flavonoids production in marigold plants
Salicylic acid (SA) is a phenolic phytohormone that acts as a key regulator of the signaling network in plants under abiotic and biotic stresses. Also, SA exerts stimulatory effects on various physiological processes related to plant growth and development. The purpose of this study was to test the hypothesis that exogenous application of SA affects positively the growth and flowering of marigold plants (Calendula...
November 2013
Ginger (Zingiber officinale) potentiate paracetamol induced chronic hepatotoxicity in Rats
Paracetamol, the most commonly sold over-the-counter antipyretic analgesic, is generally considered harmless at therapeutic doses. However, paracetamol overdose causes severe and sometimes fatal hepatic damage in humans and experimental animals. This study was undertaken to examine the effects of Zingiber officinale (ginger) on paracetamol induced hepatotoxicity in rats. Rats were given ginger (1% w/w in the diet) 7...
November 2013
The extent of use of herbal medicine in malaria management in Ido/Osi Local Government Area of Ekiti State, Nigeria
A survey to examine the extent of use of plants (herbal medicine) in the management of malaria was carried out in Ido/Osi Local Government Area (LGA) of Ekiti State, Nigeria. Pretested and structured questionnaires were administered to assess the knowledge, attitude and practice (KAP) of the people in the management of malaria with herbal medicines. Results showed that only 67.6% attributed the cause of malaria to...
November 2013
Quantitative estimation of β-sitosterol and stigmasterol in Gloriosa superba L. and Urginea indica (Roxb.) Kunth
The present study was done to reveal the quantitative content of total sterols in various plant parts of Gloriosa superba and Urginea indica. In G. superba the maximum amount of total sterols (β-sitosterol and stigmasterol) was observed in flowers (22.12 mg/gdw) and minimum in rhizome (15.82 mg/gdw). In U. indica the maximum amount of total sterols (β-sitosterol, stigmasterol) was observed in leaf (23.46...
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