scholarly journals Anti-Bacterial Effect of Synthesized Silver Nanoparticles using Capsicum Annuum L

2019 ◽  
Vol 7 (1) ◽  
pp. 76-80
Author(s):  
A G Raja Lakshmi ◽  
S Puviyarasu
Keyword(s):  
Staphylococcus Aureus ◽  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Medicinal Plants ◽  
Klebsiella Pneumoniae ◽  
Capsicum Annuum ◽  
Bell Pepper ◽  
Capsicum Annuum L ◽  
Bacterial Effect

Medicinal plants are the  sources of medicine. To determine the anti-bacterial effect of synthesized silver nanoparticles using Capsicum on Staphylococcus aureus and Klebsiella pneumoniae. The objective of the study was to determine the effect of different concentration extracts of Capsicum  annuum  (red bell pepper, green bell pepper and yellow bell pepper). The extract from Capsicum showed a higher antibacterial activity against  Klebsiella pneumoniae followed by Staphylococcus aureus. The extract had higher percentages of inhibition with increased concentration  of red and yellow bell pepper.

scholarly journals Antibacterial activity of methanol extracts of the leaves of three medicinal plants against selected bacteria isolated from wounds of lymphoedema patients

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Dereje Nigussie ◽  
Gail Davey ◽  
Belete Adefris Legesse ◽  
Abebaw Fekadu ◽  
Eyasu Makonnen
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Medicinal Plants ◽  
Klebsiella Pneumoniae ◽  
Streptococcus Pyogenes ◽  
Bacterial Species ◽  
Wound Infections ◽  
Methanol Extracts

Abstract Background Patients with lymphoedema are at high risk of getting bacterial and fungal wound infections leading to acute inflammatory episodes associated with cellulitis and erysipelas. In Ethiopia, wound infections are traditionally treated with medicinal plants. Methods Agar well diffusion and colorimetric microdilution methods were used to determine the antibacterial activity of methanol extracts of the three medicinal plants against Staphylococcus aureus, Streptococcus pyogenes, Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Shewanella alage, methicillin-resistant S. aureus ATCC®43300TM, Staphylococcus aureus ATCC25923, Escherichia coli ATCC25922, Klebsiella pneumoniae ATCC700603, and Pseudomonas aeruginosa ATCC37853. Results The methanol extract of L. inermis leaves showed high activity against all tested bacterial species, which was comparable to the standard drugs. Similarly, the extracts of A. indica showed activity against all tested species though at higher concentrations, and higher activity was recorded against Streptococcus pyogenes isolates at all concentrations. However, the extract of A. aspera showed the lowest activity against all tested species except Streptococcus pyogenes isolates. The lowest minimum inhibitory concentration (MIC) was recorded with the extract of L. inermis against E. coli isolate and S. aureus ATCC 25923. Conclusion Methanol extracts of L. inermis, A. indica, and A. aspera leaves exhibited antimicrobial activity against selected bacterial isolates involved in wound infections, of which the methanol extracts of L. inermis exhibited the highest activity. The results of the present study support the traditional use of plants against microbial infections, which could potentially be exploited for the treatment of wound infections associated with lymphoedema.

scholarly journals Antiquorum Sensing and Antibacterial Activity of Silver Nanoparticles Synthesized by Mutant Klebsiella pneumoniae MTCC 3354

2013 ◽  
Vol 25 (17) ◽  
pp. 9961-9964 ◽  
Author(s):  
Mani Arunkumar ◽  
Narayanan Mahesh ◽  
Srinivasan Balakumar ◽  
Ramalingam Sivakumar ◽  
S. Priyadharshni
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Klebsiella Pneumoniae

scholarly journals Optical characterization and concentration-dependent antibacterial activity of silver nanoparticles (AgNPs) using aqueous Melastoma malabathricum extract against Staphylococcus aureus

2020 ◽  
Vol 11 (4) ◽  
pp. 5382-5387
Author(s):  
Irshad Ul Haq Bhat ◽  
Maisarah Binti Alias
Keyword(s):  
Staphylococcus Aureus ◽  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Functional Groups ◽  
Diffusion Method ◽  
Synthetic Approach ◽  
Potential Candidate ◽  
X Ray ◽  
Melastoma Malabathricum ◽  
Resonance Band

The approach towards green synthetic methods has been enormously encouraged to synthesise nanoparticles for various uses. In this study, the one-pot synthetic method was adapted to synthesise silver nanoparticles (AgNPs) using Melastoma malabathricum (M. malabathricum) aqueous extract. The formation of AgNPs was confirmed by observing the results obtained by optical characterisation methods. The plasma resonance band along with shoulder at 375 nm and 595 nm, respectively, in Uv-Visible spectra supported the conversion of silver (Ag) to AgNPs reduced by functional groups present in the plant extract. The size of AgNPs was 31 nm and cubic in shape as confirmed by X-ray diffractometry (XRD) using Scherer equation. X-Ray Fluorescence (XRF) results also confirmed the presence of silver. The FTIR characterisation confirmed the presence of reducing functional groups. The antibacterial activity of AgNPs against Staphylococcus aureus (S. aureus) was carried out by disc diffusion method with increasing concentration of AgNPs, and enhanced inhibition zone was observed. The AgNPs obtained can be further explored against different bacterial strains and can a potential candidate as an antibacterial agent using the green synthetic approach.

scholarly journals TEORES DE MICRONUTRIENTES NO DESENVOLVIMENTO DA PLANTA DE PIMENTÃO SOB FERTIRRIGAÇÃO

Irriga ◽  
2003 ◽  
Vol 8 (2) ◽  
pp. 120-131 ◽  
Author(s):  
Francisco Fernando Noronha Marcussi ◽  
Roberto Lyra Villas Bôas
Keyword(s):  
Capsicum Annuum ◽  
Growth Period ◽  
Bell Pepper ◽  
Soil Science ◽  
Pepper Plant ◽  
Cu Content ◽  
Capsicum Annuum L ◽  
Entire Plant ◽  
Micronutrient Concentration ◽  
E Mail

TEORES DE MICRONUTRIENTES NO DESENVOLVIMENTO DA PLANTA DE PIMENTÃO SOB FERTIRRIGAÇÃO   Francisco Fernando Noronha MarcussiDepartamento de Engenharia Rural, Faculdade de Ciências Agronômicas,Universidade Estadual Paulista, Botucatu, SP. CP 237, CEP 18603-970. E-mail: [email protected] Lyra Villas BôasDepartament de Recursos Faculdade de Ciências Agronômicas,Universidade Estadual Paulista, Botucatu, SP. CP 237, CEP 18603-970. E-mail: [email protected]  1 RESUMO  Neste estudo, objetivou-se determinar os teores de micronutrientes (Fe, Zn, Mn, B e Cu) nos diferentes órgãos do híbrido de pimentão Elisa, sob fertirrigação em ambiente protegido, em oito épocas de coleta de planta. O experimento foi desenvolvido nas dependências do Departamento de Recursos Naturais - Ciência do Solo, FCA, Botucatu/SP. Constou o experimento de 8 tratamentos (épocas de coleta de planta – 0, 20, 40, 60, 80, 100, 120, e 140 dias após o transplante das mudas) e 4 repetições, sendo cada repetição formada por 4 plantas. Em cada etapa obteve-se os teores dos micronutrientes no fruto, folha, caule e raiz e na planta como um todo. A fertilização no ciclo estudado, 140 dias, foi feita via fertirrigação localizada. Os resultados mostram que os teores de micronutrientes encontrados na planta de pimentão seguem a seqüência: Fe>Zn>Mn>B>Cu. Nos resultados são apresentadas as tabelas com os teores de Fe, Zn, Mn, B e Cu (Tukey a 5%) em cada órgão da planta e da planta como um todo, nas diferentes épocas de avaliação e, os gráficos mostrando o comportamento dos teores de Zn, Mn, B e Cu.  UNITERMOS: Fertirrigação, concentrações de micronutrientes, Pimentão, Capsicum annuum L. e nutrição mineral.   MACUSSI, F.F.N.; VILLAS BÔAS, R.L MICRONUTRIENT CONCENTRATION IN THE BELL PEPPER PLANT DEVELOPMENT UNDER FERTIRRIGATION   2 ABSTRACT  This study aimed to determine the micronutrient contents (Fe, Zn, Mn, B and Cu) in different organs of Elisa bell pepper hybrid under fertirrigation in protected environment in eight harvesting seasons. The experiment was carried out in the Natural Resource Department – Soil Science, FCA, Botucatu. SP, and  consisted of 8 treatments (harvesting season – 0, 20, 40, 60, 80, 100 and 140 days after seedling transplant), and 4 replications, each one composed of 4 plants. In each growth period the micronutrient content in the fruit, leaf, stem, root and  plant as a whole was determined. The fertilization in the study period i.e., 140 days, was performed by local fertirrigation. The results showed that the micronutrient levels found in the bell pepper plant followed the decreasing order: Fe>Zn>Mn> B>Cu. The tables present the Fe, Zn, Mn, B and Cu (Tukey Test at 5%) contents in each plant organ and in the entire plant at different evaluation periods. The charts show the Zn, Mn, B and Cu content variation.  KEYWORDS: fertirrigation, micronutrient concentration, bell pepper, Capsicum annuum L. and mineral nutrition. 

scholarly journals Synthesis of zinc oxide and silver nanoparticles using ficus palmata - Forssk leaf extracts and assessment of antibacterial activity

2020 ◽  
Vol 26 (6) ◽  
pp. 200454-0
Author(s):  
Sabaoon Shamshad ◽  
Jamshaid Rashid ◽  
Ihsan-ul-haq ◽  
Naseem Iqbal ◽  
Saif Ullah Awan
Keyword(s):  
Staphylococcus Aureus ◽  
Silver Nanoparticles ◽  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Zinc Oxide Nanoparticles ◽  
Inhibitory Concentration ◽  
Oxide Nanoparticles ◽  
Leaf Extracts ◽  
E Coli ◽  
Ficus Palmata

Multidrug resistance of bacteria is an emerging human health hazard and warrants development of novel antibacterial agents with more effective mode of action. Here, zinc oxide and silver nanomaterials were prepared using Ficus palmata Forssk leaf extract with efficient antibacterial activity. SEM coupled with EDS confirmed the spherical symmetry with average particle diameter 50 to 65 nm while the XRD confirmed crystalline face centered cubic structure of silver and hexagonal crystallize phase of zinc oxide nanoparticles. Antibacterial activity was evaluated for 8 pathogenic bacterial strains including 3 drug resistant pathogenic strains. The nanoparticles showed enhanced growth inhibition for resistant strains in comparison with the broad-spectrum antibiotics i.e. roxithromycin and cefixime. Minimum inhibitory concentration in μg.mL<sup>-1</sup> of silver nanoparticles was found to be as low as 33.3 for resistant Streptococcus haemolyticus; 11.1 for Staphylococcus aureus and E Coli; and 3.7 μg.mL<sup>-1</sup> for resistant Pseudomonas aeruginosa. Similarly, the minimum inhibitory concentration of zinc oxide nanoparticles was found to be 100 μg.mL<sup>-1</sup> against resistant Streptococcus haemolyticus and Staphylococcus aureus; 11.1 μg.mL<sup>-1</sup> for resistant Pseudomonas aeruginosa; and 3.7 μg.mL<sup>-1</sup> against resistant E coli. Ficus palmata Forssk leaf extracts can be explored effectively for synthesizing active antibacterial nanomaterials as a non-toxic and environmentally benign synthesis route.

Sign in / Sign up

Export Citation Format

Share Document