scholarly journals GC-MS analysis and antimicrobial activity of the aqueous extract from the bulbs of Allium chinense G. Don. cultivated in North Sumatra, Indonesia

Author(s):  
Frans Grovy Naibaho
2018 ◽  
Vol 44 (1) ◽  
pp. 75-85
Author(s):  
S. A. Alrumman ◽  
Y. S. Mostafa ◽  
Shekha T. S. Al-Qahtani ◽  
T. Sahlabji ◽  
T. H. Taha

2017 ◽  
Vol 6 (3) ◽  
Author(s):  
Ercan Karaköse ◽  
Hakan Çolak ◽  
Fatih Duman

AbstractThe manufacture of nanoparticles (NPs) is a new area of investigation due to potential applications related to the improvement of new technologies; in particular, environmentally safe manufactured nanomaterials have become a growing area within nanoscience. In this research, we synthesized zinc oxide (ZnO)-NPs using an aqueous extract of


Author(s):  
Iswariya S. ◽  
Uma T. S.

Objective: The present study was designed to identify the bioactive phytochemicals and its antibacterial and in vitro anti-inflammatory potential of aqueous and methanolic seed extract of Citrullus lanatus.Methods: The phytochemical screening of both the aqueous and methanolic seed extract was carried out qualitatively to identify the major Phyto-constituents present in the extracts. The antimicrobial activity of the extracts was evaluated against six pathogenic bacterial strains by agar well diffusion method and the Minimum inhibitory concentration (MIC) was determined by broth dilution method. In vitro anti-inflammatory activity of C. lanatus seed extracts was evaluated by using human red blood cell (HRBC) membrane stabilization and inhibition of albumin denaturation method.Results: The results of the study indicated that both the extracts of the seed having antimicrobial activity, while the methanolic extract showed more significant activity against the tested organism than aqueous extract. Methanol extract had the lowest MIC of 1.562 mg/ml against Escherichia coli, Staphylococcus aureus, Klebsiella pneumonia, Pseudomonas aeruginosa and Bacillus subtilis, whereas in aqueous extract was highly sensitive to Bacillus subtilis, E. coli and Klebsiella pneumonia with MIC of 3.125 and 6.25 mg/ml, respectively. Methanolic extracts exerted comparative higher anti-inflammatory activity than aqueous extract.Conclusion: Present study provides a firm evidence to support that the synergistic effect of C. lanatus seed extracts having potent anti-inflammatory and antimicrobial property, which might serve as an effective drug for various microbial infections and inflammatory disorders.


2018 ◽  
Vol 7 (2) ◽  
pp. 116-120
Author(s):  
Senthamizh Selvan N ◽  
◽  
Isaiah S ◽  

The present study was focused to examine the presence of phytoconstituents in the ethanolic extract of Shuteria involucrata plant using GC-MS analysis and Antibacterial activity. The GC-MS analysis of S. involucrata leaf was performed using Agilent 6890-JEOL GC-Mate-II Mass Spectrometer. The result of the study showed the presence of six bioactive compounds in the ethanolic extract. The antimicrobial activity was carried out by disc diffusion technique against the four selected pathogens. Among the four, tested for Antibacterial Activity Staphylococcus aureus, and Pseudomonas aeruginosa and were more susceptible to the extract, whereas the others are less susceptible. Ethanol and methanol extracts of plant materials exhibited good antibacterial activity against gram positive, gram negative bacterias


2020 ◽  
Vol 151 ◽  
pp. 15550-15558
Author(s):  
Amégninou Agban ◽  
Yao Hoekou ◽  
Passimna Pissang ◽  
Tchadjobo Tchacondo ◽  
Komlan Batawila

Objectif : L’objectif de ce travail était d’évaluer in vitro l’activité antimicrobienne des extraits de feuilles et tige de Jatropha multifida sur la croissance de Candida albicans, Escherichia coli et Staphylococcus aureus, puis d’évaluer in vivo la toxicité de cette plante. Méthodologie et résultats : Les méthodes de diffusion en milieu gélosé et de microdilution en milieu liquide ont été utilisées pour évaluer l’effet antimicrobien. Une étude en subaigüe était réalisée afin d’explorer les effets toxiques de l’extrait aqueux des feuilles. Les résultats des tests antimicrobiens montrent une activité des extraits de feuilles et tige de J. multifida sur la croissance des souches utilisées avec des diamètres de zones d’inhibition allant de 8 à 25 mm et des concentrations minimales inhibitrices (CMI) variant de 0,039 mg/mL à 1,25 mg/mL à l’exception des souches de E. coli qui sont résistantes aux extraits de la tige. L’administration en subaigüe de l’extrait aqueux des feuilles de J. multifida à la dose de 600 mg/kg entraîne une perte significative de poids chez les souris. Conclusion et applications des résultats : Les extraits aqueux, éthanolique et hydroéthanolique des feuilles et tige de J. multifida possèdent d’activité antimicrobienne et pourraient être utilisés dans le traitement des Candidoses à C. albicans et des infections à S. aureus. Mais l’essai de toxicité subaigüe montre que l’extrait aqueux de la plante serait toxique. Des études toxicologiques approfondies restent donc nécessaires sur ces extraits afin de mieux élucider leur inocuité. Mots-clés : Jatropha multifida, extraits de feuilles et de tige, activités antifongique et antibactérienne, toxicité. Agban et al., J. Appl. Biosci. 2020 Evaluation du potentiel antimicrobien et de la toxicité des extraits de Jatropha multifida Linn, (Euphorbiaceae) 15551 Evaluation of antimicrobial potential and toxicity of Jatropha multifida Linn, (Euphorbiaceae) extracts ABSTRACT Objective: The objective of this study was to evaluate in vitro the antimicrobial activity of leaves and stem of Jatropha multifida extracts against Candida albicans, Escherichia coli and Staphylococcus aureus, and then to evaluate in vivo the toxicity of this plant. Methodology and Results: The agar well-diffusion and the NCCLS broth microdilution methods were used to assess the antimicrobial effect. A subacute study was carried out to explore the toxic effects of the aqueous extract of the leaves. The results of the antimicrobial tests show an activity of the extracts of leaves and stems of J. multifida on the growth of the strains used with diameters of inhibitory zones ranging from 8 to 25 mm and minimum inhibitory concentrations (MIC) varying from 0.039 mg/mL to 1.25 mg/mL exception E. coli strains which are resistant to extracts from the stem. Subacute administration of the aqueous extract of the leaves of J. multifida at a dose of 600 mg/kg leads to a significant loss of weight in the mice. Conclusion and application of findings : The aqueous, ethanolic and hydroethanolic extracts of the leaves and stem of J. multifida have antimicrobial activity and could be used in the treatment of Candidiasis and bacterial infections due respectively to C. albicans and S. aureus. But the subacute toxicity test shows that the aqueous extract of the plant would be toxic. Extensive toxicological studies therefore remain necessary on these extracts in order to better elucidate their safety. Keywords: Jatropha multifida extracts of leaves and stem, antifungal and antibacterial activities, toxicity


Author(s):  
Amit Gupta ◽  
Karishma Ghosh ◽  
Dakshita Snud Sharma ◽  
Shubham Tyagi

Allium cepa (onion; Liliaceae family), herbaceous annual plant and reported Sulphur based amino acids with many minerals including vitamins. Inspite of various medicinal uses of this plant as food and also showed various beneficial effects. The antimicrobial activity of aqueous extract from Allium cepa (onion bulb) was evaluated against bacterial strains using disc diffusion method. In contrast, inflammatory response or inhibition of T cell antigenic response was evaluated using typhoid vaccine and swine flu vaccine in Swiss mice. These studies were conducted according to ethical guidelines and determining T cell proliferation including estimation of cytokines from cell culture supernatant and also measuring its hemolytic activity. The results showed that aqueous extract show the highest inhibition rate against Pseudomonas aeruginosa and Salmonella enteritidis. In mice model studies, aqueous extract at higher doses showed inhibition in antigen specific T cell proliferation and also declining in the level of IFN-gamma production but enhancement in IL-4 production. In addition, aqueous extract at higher concentration does not showed any hemolytic activity. Overall, this study provides evidence for the presence of secondary metabolites in aqueous extract that probably interferes with bacterial growth (antimicrobial) and also declining in antigenic specific proliferation (i.e. anti-inflammatory) which would prevent and inhibit initiation and progression of many diseases.


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