Posted by admin on Jun 30, 2017 in |
In this research work Zn1-xAgxO1-δ (where x = 0.05, 0.10, 0.15 and 0.20) nano powders were synthesized via simple soft chemical method using corresponding metal nitrates and alkali precipitant. Sodium hydroxide was used as a precipitant during the synthesis. The prepared samples were characterized using X-ray diffraction, FTIR spectroscopy, particle size analysis, SEM, EDAX analysis and TEM. The antimicrobial activity of the silver doped zinc oxide nanoparticles were studied against both Gram positive (Staphylococcus aureus and Bacillus subtilis) and Gram negative (Escherichia coli and Klebsiella pneumoniae) bacteria by agar well diffusion method. Considering the better antimicrobial properties obtained with Zn0.80Ag0.20O1-δ, these materials were subjected for in vivo acute oral nanotoxicological studies in Swiss Albino mice. The histopathological changes in livers and kidneys of Swiss Albino mice due to the oral ingestion of the above material (Zn0.80Ag0.20O1-δ) at different dosage levels on day 14 administration have shown the LD50 as greater than 2000 mg/kg body...
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Posted by admin on Jun 30, 2017 in |
Objective: Ginger (Zingiber officinale Roscoe), a well-known spice plant, has been used traditionally in the treatment of a wide variety of ailments. The main objective of the work is to evaluate the antidepressant and antinociceptive activity of ethanolic extract of Zingiber officinale in Swiss albino mice. Methods: The present study was design to evaluate the antidepressant property of Zingiber officinale as well as its interaction with conventional antidepressant drug using forced swim test and to evaluate possible mechanism involved in its action. Antinociceptive activity was evaluated by acetic acid induced writhing and its interaction with conventional analgesic drug was also noted. The rhizomes of ginger were authenticated and extraction of dried rhizomes was done by using soxhlet apparatus to obtain its ethanolic extract. Results: The alcoholic extract of Zingiber officinale (300mg/kg p.o and 150mg/kg p.o) for antidepressant activity significantly reduced the immobility time in mice (P<0.05) as compared to the vehicle control. The extract of Zingiber officinale (100 and 200 mg/kg, p.o.) significantly suppressed the acetic acid-induced writhing response...
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Posted by admin on Jun 30, 2017 in |
Raw milk may contain pathogenic microorganisms, probably harmful to humans inclusive of Escherichia coli O157:H7 inflicting hemorrhagic colitis and hemolytic-uremic syndrome. Raw milk is believed to be a high risk food as it is highly nutritious and results in growth and multiplication of different microorganisms. E. coli O157:H7 infect humans by different mode of transmission. Present study was performed to estimate the prevalence and the molecular characterization of E. coli O157:H7 retrieved from retail raw milk samples in Quetta Pakistan. Out of 100 raw milk samples, 12 (12%) possess positive colorless colonies on CT-SMAC. Biochemical tests for the confirmation of E. coli O157:H7 alongside gram’s staining of the colonies had been accomplished. The amplification of isolates by mPCR using universal specific primers, stx1 and stx2 confirmed that 6 (50%), 3 (25%) and 3(25%) were positive for stx1, stx2 and both stx1 and stx2 genes respectively. It is concluded that raw milk harbor E. coli O157:H7, having shiga toxin...
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Posted by admin on Jun 30, 2017 in |
Mucuna pruriens is a climbing legume used in the treatment of various ailments. It is commonly known as Cowitch or velvet bean. Traditionally, it was used in treating male infertility. The main aim of this study was to identify the bioactive materials present in the methanol extract of Mucuna pruriens seeds by Gas Chromatography Mass Spectrometry (GC-MS) technique. The analysis by GC-MS reveals the presence 5 major compounds namely, Pentadecanoic acid, 14-methyl-, methyl ester, Dodecanoic acid, 9,12-Octadecadienoic acid (Z,Z)-, methyl ester, 9,12- Octadecadienoic acid and 2-Myristynoyl-glycinamide. By comparing with the references of earlier studies, it was clear that these major compounds played a major role in its neuroprotective, antioxidant, anti-inflammatory, anticancer, hepatoprotective, and antimicrobial effects. The presence of antioxidants has been linked with neurogenesis in the brain. The presence of these compounds may authenticate the scientific evidences of many of its proposed therapeutic potentiality of the seeds of Mucuna pruriens...
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Posted by admin on Jun 30, 2017 in |
The objective of the present work is to study the antifungal activity of gall extracts of Quercus infectoria (Q. infectoria) (Family: Fagaceae). The plant commonly known as gall oak, is a small shrub found in Greece, Asia Minor and Iran. The gall of Quercus infectoria macroscopically, is globose with horny appearances on external surface (1-1.5 cm in diameter) giving rough touch, greyish-brown to brownish-black in colour externally with unpleasant odour. The galls of Quercus infectoria have been pharmacologically documented to possess astringent, antidiabetic, antitremorine, local anaesthetic, antiviral, antibacterial, antifungal and anti-inflammatory activities. The powder of Quercus infectoria gall was subjected to extraction with Chloroform, Ethanol, Acetone, Ethyl acetate and Water using soxhlet extractor. The extracts after preliminary phytochemical investigation had shown the presence of Carbohydrates and Tannins. The antifungal activity was performed by agar cup plate method against two fungi, Penicillium sps and Aspergillus sps. The zone of inhibitions were compared with standard antifungal drug clotrimazole. The chloroform extract exhibited good anti-fungal activity as compared to other extracts....
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