Aqueous leaf extract of Ligustrum vulgare inhibits ascospore germination and mycelial growth of Hymenoscyphus fraxineus

2020 ◽  
Vol 51 (1) ◽  
Author(s):  
Valentin Brühwiler ◽  
Thomas N. Sieber
Keyword(s):  
Mycelial Growth ◽  
Leaf Extract ◽  
Hymenoscyphus Fraxineus ◽  
Ascospore Germination ◽  
Ligustrum Vulgare ◽  
Aqueous Leaf Extract

Cytoprotective and antiadhesive effects of aqueous leaf extract from Orthosiphon aristatus against uropathogenic E. coli

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381 ◽  
Author(s):  
S Sarshar ◽  
MR Asadi Karam ◽  
M Habibi ◽  
S Bouzari ◽  
X Qin ◽  
...  
Keyword(s):  
Leaf Extract ◽  
E Coli ◽  
Aqueous Leaf Extract

Insecticidal Activities of the Leaf Extract of the Invasive Alien Plant, Chromolaena odorata (L.) (Asteraceae) Against Macrotermes species (Termites)

2019 ◽  
Vol 35 (1) ◽  
pp. 145-153
Author(s):  
O. Uyi, ◽  
I.G. Amolo ◽  
A.D. Adetimehin
Keyword(s):  
Leaf Extract ◽  
Insect Pests ◽  
Chromolaena Odorata ◽  
Leaf Extracts ◽  
Alien Plant ◽  
Biological Efficacy ◽  
Invasive Alien Plant ◽  
Impregnation Technique ◽  
Aqueous Leaf Extract ◽  
Worker Caste

Several studies have demonstrated the biological efficacy of leaf, stem and root powders or extracts of Chromolaena odorata (L.) King and Robinson against insect pests but those that are focused on the biological efficacy of aqueous leaf extracts against Macrotermes species are scanty. Current management of termites with synthetic insecticides is being discouraged due to human and environmental hazards. Therefore, the insecticidal effectiveness of aqueous leaf extract C. odorata against Macrotermes species was investigated. Five concentrations (0, 2.5, 5.0, 7.5 and 10.0% (w/v)) of the aqueous extract of C. odorata plant were evaluated for repellency and toxicity on the worker caste of Macrotermes species following standard procedures. The filter paper impregnation technique was used for the bioassay. Percentage repellency was monitored for 30 minutes and mortality recorded at 12, 24 and 36 hours post exposure. The leaf extract of C. odorata significantly repelled 95% of Macrotermes species at the highest concentration of 10% (w/v) after 30 minutes post treatment exposure. Mortality of Macrotermes species was independent of treatment concentration, but dependent on duration of exposure. All treatment concentrations of aqueous leaf extract of C. odorata caused significant mortality against Macrotermes species ranging between 94% and 98% compared to the control; indicating very great potential for adoption and use in the management of Macrotermes species.

Green Synthesis of Silver Nanoparticles by Allamanda cathartica L. Leaf Extract and Evaluation for Antimicrobial Activity

2013 ◽  
Vol 6 (4) ◽  
pp. 2260-2268
Author(s):  
M. Linga Rao ◽  
Bhumi G ◽  
Savithramma N
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Leaf Extract ◽  
Fusarium Species ◽  
Inhibition Zone ◽  
Fungal Species ◽  
Green Technology ◽  
Metallic Silver ◽  
Synthesis Of Nanoparticles ◽  
Aqueous Leaf Extract

Silver nanoparticles (SNPs) exhibit tremendous applications in medicine as antimicrobial agent.  The use of different parts of plants for the synthesis of nanoparticles is considered as a green technology as it does not involve any harmful chemicals.  In the present study, we report a rapid biosynthesis of silver nanoparticles from aqueous leaf extract of medicinal plant Allamanda cathartica.  The active phytochemicals present in the plant were responsible for the quick reduction of silver ion to metallic silver nanoparticles. The reduced silver nanoparticles were characterized by using UV-Vis spectrophotometry, Scanning Electron Microscope (SEM), Energy Dispersive Analysis of X-ray (EDAX) and Atomic Force Microscopy (AFM).  The spherical shaped silver nanoparticles were observed and it was found to 19-40 nm range of size.  These phytosynthesized SNPs were tested for their antimicrobial activity and it analyzed by measuring the inhibitory zone. A. cathartica aqueous leaf extract of SNPs showed highest toxicity to Pseudomonas followed by Klebsiella, Bacillus and E. coli and lowest toxicity towards Proteus. In fungal species, highest inhibition zone was noted against Rhizopus followed by Curvularia, Aspergillus flavus and Aspergillus niger and minimum inhibition zone was observed against Fusarium species.  These results suggest a promising potential of Indian plant-based green chemistry for production of SNPs for biomedical and nanotechnology applications.

Synthesis and characterization of TiO2 NPs by aqueous leaf extract of Coleus aromaticus and assess their antibacterial, larvicidal, and anticancer potential

2021 ◽  
pp. 111335
Author(s):  
Mathiyazhagan Narayanan ◽  
Paramasivam Vigneshwari ◽  
Devarajan Natarajan ◽  
Sabariswaran Kandasamy ◽  
Mishal Alsehli ◽  
...  
Keyword(s):  
Leaf Extract ◽  
Synthesis And Characterization ◽  
Tio2 Nps ◽  
Aqueous Leaf Extract ◽  
Coleus Aromaticus

scholarly journals Oral acute and sub-chronic toxicity assessment of aqueous leaf extract of Simarouba glauca DC (Paradise tree)

2021 ◽  
Vol 8 ◽  
pp. 239-247
Author(s):  
SD. E. Osagie-Eweka ◽  
N.E.J. Orhue ◽  
E.K.I. Omogbai ◽  
F.C. Amaechina
Keyword(s):  
Leaf Extract ◽  
Chronic Toxicity ◽  
Toxicity Assessment ◽  
Aqueous Leaf Extract ◽  
Simarouba Glauca

scholarly journals Biomembrane stabilization and antiulcerogenic properties of aqueous leaf extract of Gossypium barbadense L. (Malvaceae)

2017 ◽  
Vol 6 (4) ◽  
pp. 301-309 ◽  
Author(s):  
S. Sabiu ◽  
E.O. Ajani ◽  
A.A. Ajao ◽  
T.O. Sunmonu ◽  
A.S. Ibraheem ◽  
...  
Keyword(s):  
Leaf Extract ◽  
Gossypium Barbadense ◽  
Aqueous Leaf Extract
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