scholarly journals An Evaluation of the antimicrobial potency of Lasianthera africana (BEAUV) and Heinsia crinata (G. Taylor) on Escherichia coli,Salmonella typhi, Staphylococcus aureus and Candida albicans

2008 ◽  
Author(s):  
Andy, I.E. ◽  
Eja, M.E. ◽  
Mboto, C.I.
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Candida Albicans ◽  
Salmonella Typhi ◽  
Antimicrobial Potency

Activité antimicrobienne de l’huile essentielle de galles du Pistachier de l’Atlas (Pistacia atlantica Desf.) en Algérie

2019 ◽  
Author(s):  
I. Sifi ◽  
M. Yousfi
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Candida Albicans ◽  
Bacillus Cereus ◽  
Salmonella Typhi ◽  
Huiles Essentielles ◽  
Activité Antimicrobienne ◽  
Pistacia Atlantica

L’activité antimicrobienne des huiles essentielles de galles de Pistacia atlantica récoltées dans trois régions (Aïn-Oussara, Laghouat et Kheneg) a été évaluée sur sept souches pathogènes (Escherichia coli, Bacillus cereus, Pseudomonas aeruginosa, Staphylococcus aureus, MRSA+, Salmonella typhi et Candida albicans), en utilisant les méthodes de diffusion sur gélose, de microdilution et celle de microatmosphère (seulement pour Candida albicans). Les huiles essentielles ont révélé un effet antimicrobien remarquable contre les micro-organismes testés, avec des valeurs de CMI et de CMB variant de 0,13 à 7,99 μl/ml et de 0,25 à 7,99 μl/ml, respectivement. Une activité importante a été observée pour les échantillons de la station Kheneg contre l’espèce Candida albicans avec une zone d’inhibition de 68 mm (50 μl). Ces résultats suggèrent que les huiles essentielles testées pour leur activité antimicrobienne peuvent être classées comme bactéricides.

scholarly journals Liberación de iones sodio y potasio en extracto de Calotropis proceraLinn en determinados microorganismos patógenos

2018 ◽  
Vol 2 (2) ◽  
pp. 26-30
Author(s):  
Oluwakemi Sola Asoso ◽  
K.O Oladunmoye ◽  
A.O Ogundare
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Candida Albicans ◽  
Salmonella Typhi ◽  
Shigella Dysenteriae ◽  
Calotropis Procera ◽  
E Coli

Se investigó la tasa de liberación de iones de sodio y potasio para los extractos acuoso, etanólico, metanólico y en acetona de hojas y tallo de Calotropis procera procera L en microorganismos patógenos seleccionados de los géneros de Salmonella typhi, Escherichia coli, Shigella dysenteriae, Staphylococcus aureus, Candida albicans, Malazzesia furfur ATCC 44349 y sus tipos de aislantes, usando la técnica de fotometría de llama. Se encontró que el extracto acuoso era más efectivo para algunos organismos en la salida de sodio e iones del potasio; mientras que otros extractos con solventes como acetona y metanol, también eran eficaces para otro tipo de organismos. Por ejemplo, la cantidad de sodio liberado por los extractos de tallo, mostró que S. typhi y C. albicans presentaron la mayor cantidad de 23 y 24 mg/ml respectivamente. A diferencia de E. coli, que tuvo la mayor cantidad de sodio liberada de 20 mg/ml por extractos de tallo. La comparación de la cantidad de iones de sodio y potasio liberados por los extractos de la planta con dos antibióticos comerciales (tetraciclina y amoxicilina), mostró que la cantidad de sodio liberado por amoxicilina y tetraciclina de Calotropis procera, usando organismos patógenos seleccionados, fue mayor que la cantidad de iones de potasio liberados.

scholarly journals Determinación de la composición química del aceite esencial de Thymus vulgaris L. "Tomillo", determinada por cromatografía de fase gaseosa, espectrometría de masa GCIMS y análisis de su actividad antimicrobiana

2000 ◽  
Vol 3 (2) ◽  
pp. 69-78
Author(s):  
Olinda Acosta ◽  
Américo Castro L. ◽  
Mirtha Roque A. ◽  
Luis Felix V.
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Candida Albicans ◽  
Staphylococcus Epidermidis ◽  
Micrococcus Luteus ◽  
Salmonella Typhi ◽  
Culture Collection ◽  
American Type Culture Collection ◽  
Thymus Vulgaris

Se ha realizado el estudio del aceite esencial extraído de las hojas y flores de Thymus vulgaris L "Tomillo" por arrastre con vapor de agua. El cual se sometió al análisis físico - químico y determinación de la composición química mediante cromatografía de gases acoplado a un espectrómetro de masas GCIMS, deteuninándose compuestos hidrocarbonados como: Tuyona; 1,3,6-octatrieno, 3,7-dimetil; Canfeno; Betamirceno; Delta-4-careno; Benceno, 1-metil-4-(l-metil etil); Gama terpineno; Beta selineno; Germacreno D; Delta cadineno; Tras-cariofileno; Beta-bisaboleno y compuestos oxigenados como: 7-octen-4-ol (CAS); 1,6-octadieno-3-ol, 3,7-dimetil acetato; Linalol; Isoborneol; carvacrol; Timol; Acetato de famesil 2. Asimismo, se determinó la actividad antimicrobiana frente a cepas patógenas procedentes de muestras clínicas y de la ATCC (American Type Culture Collection), observándose actividad inhibitoria frente a las cepas: Escherichia coli, Escherichia coli, ATCC 25922 Micrococcus luteus ATCC 9341, Staphylococcus aureus ATCC 6538, Streptococcus β hemolítieo, Staphylococcus epidermidis N° 36, Shigella flexnery, Salmonela paratyphi, Salmonella typhi, Candida albicans ATCC 10231, Candida albicans, Pseudomonas aeruginosa.

Screening and antimicrobial activity of actinomycetes isolated from the rhizosphere of Clitoria ternatea

2016 ◽  
Vol 1 (01) ◽  
Author(s):  
Vemavarapu Bhaskara Rao ◽  
Kandlagunta Guru Prasad ◽  
Krishna Naragani ◽  
Vijayalakshmi Muvva
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Calcium Carbonate ◽  
Rhizosphere Soil ◽  
Soil Samples ◽  
Antimicrobial Spectrum ◽  
Clitoria Ternatea ◽  
Primary Screening

The air dried rhizosphere soil samples pretreated with calcium carbonate was employed for the isolation of actinomycete strains. Serial dilution plate technique was used for the isolation of actinomycetes. A total of 20 actinomycete strains designated as BS1-BS20 were isolated from the rhizosphere of medicinal plant Clitoria ternatea. All the 20 strains were subjected to primary screening for antimicrobial activity. Among the 20 strains screened, 10 strains exhibited high antimicrobial spectrum against Staphylococcus aureus, Escherichia coli and Candida albicans.

The In vitro Evaluation of the Antimicrobial Activity of Quercus robur L. Methanolic and Aqueous Leaves’ Extracts, from the Algerian High Plateaus Against some Uropathogenic Microbial Strains

2019 ◽  
Vol 18 (5) ◽  
pp. 262-274
Author(s):  
E. Benyagoub ◽  
N. Nabbou ◽  
S. Boukhalkhel ◽  
I. Dehini
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Enterococcus Faecalis ◽  
Fusidic Acid ◽  
Quercus Robur ◽  
Diffusion Method ◽  
Phytochemical Analysis ◽  
Microbial Strains

The medicinal value of the plants is due to their chemical components that bring a definite physiological action on the human body to prevent the diseases. In this work, we investigated the antimicrobial activity of leaves’ extracts of Quercus robur L., collected from the Algerian upper highlands, on ten bacterial strains and one fungal strain known to be pathogenic. First, we performed a qualitative phytochemical analysis, and second, antimicrobial activity tests performed by agar diffusion method (disc and well) with the determination of MIC by broth macro-dilution method. Given the results, it appears that obtained macerates of Quercus robur L. were rich in bioactive phytoconstituents such as alkaloids, anthraquinones, saponins, tannins, and other components. The yield of aqueous and methanolic macerates of leaves was 8.5 ± 1.41 and 22.4 ± 4.36%, respectively. The bacterial resistance was relatively important to several antibiotics, namely, ampicillin, amoxicillin + clavulanic acid for strains of Escherichia coli and Salmonella sp. However, Staphylococcus aureus strains were resistant to fusidic acid, penicillin, and oxacillin; while Enterococcus faecalis was resistant to fusidic acid, penicillin, oxacillin, and ticarcillin. The antibacterial activity of the macerates toward tested microbial strains showed that the aqueous and methanolic macerates of the leaves were proportional to the tested concentration and active not only against Gram-positive and Gram-negative bacteria but also on the fungal species Candida albicans. The estimated MIC for Escherichia coli, Enterococcus faecalis, and Staphylococcus aureus was in the order of 10 mg/mL, which seems more effective than toward Salmonella sp., Klebsiella pneumoniae, Pseudomonas aeruginosa, and Candida albicans which were in the order of 30 mg/mL. These preliminary results confirm that the part of the studied plant had a very good antimicrobial activity that was proportional to the serial concentrations of the tested extracts.

Substituted 4-Formyl-2H-chromen-2-ones: Their Reaction with N-(2,3,4,6-Tetra-Oacetyl- β-D-galactopyranosyl)thiosemicarbazide, Antibacterial and Antifungal Activity of Their Thiosemicarbazone Products

2020 ◽  
Vol 24 (19) ◽  
pp. 2272-2282
Author(s):  
Vu Ngoc Toan ◽  
Nguyen Minh Tri ◽  
Nguyen Dinh Thanh
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Candida Albicans ◽  
Selenium Dioxide ◽  
Antibacterial And Antifungal Activity ◽  
E Coli ◽  
Antibacterial And Antifungal Activities ◽  
Alkyl Ethers ◽  
Antibacterial And Antifungal

Several 6- and 7-alkoxy-2-oxo-2H-chromene-4-carbaldehydes were prepared from corresponding alkyl ethers of 6- and 7-hydroxy-4-methyl-2-oxo-2H-chromen-2-ones by oxidation using selenium dioxide. 6- and 7-Alkoxy-4-methyl-2H-chromenes were obtained with yields of 57-85%. Corresponding 4-carbaldehyde derivatives were prepared with yields of 41-67%. Thiosemicarbazones of these aldehydes with D-galactose moiety were synthesized by reaction of these aldehydes with N-(2,3,4,6-tetra-O-acetyl-β-Dgalactopyranosyl) thiosemicarbazide with yields of 62-74%. These thiosemicarbazones were screened for their antibacterial and antifungal activities in vitro against bacteria, such as Staphylococcus aureus, Escherichia coli, and fungi, such as Aspergillus niger, Candida albicans. Several compounds exhibited strong inhibitory activity with MIC values of 0.78- 1.56 μM, including 8a (against S. aureus, E. coli, and C. albicans), 8d (against E. coli and A. niger), 9a (against S. aureus), and 9c (against S. aureus and C. albicans).

Influence of Removable Denture Cleaning Agents on Adhesion of Oral Pathogenic Microflora In Vitro: A Randomized Controlled Trial

2021 ◽  
Vol 14 (1) ◽  
pp. 656-664
Author(s):  
I.R. Volchkova ◽  
A.V. Yumashev ◽  
V.V. Borisov ◽  
V.I. Doroshina ◽  
E.A. Kristal ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Candida Albicans ◽  
Test Group ◽  
Control Group ◽  
Removable Dental Prostheses ◽  
Removable Denture ◽  
Group 2 ◽  
Adhesion Index ◽  
Group 1

Introduction: Removable dentures are used by 20% of the population. These may be accompanied by denture stomatitis in 15-70% of patients. The choice of the optimal cleansing agent for removable dental prostheses is of high significance. Aim: The aim of our research was to study the influence of removable denture cleansing products on the adhesion of microorganisms and yeast. Materials and Methods: We manufactured 144 specimens of standardized round shape with a diameter of 10 mm from 4 types of modern polymeric materials used by prosthetic dentistry to produce removable dentures, 12 specimens of each material were placed into suspensions of bacterial cultures of Staphylococcus aureus, Escherichia coli, Candida albicans, then into “ClearaSept” (Test group 1), “Рrotefix active cleanser” (Test group 2), saline solution (Control group), followed by nutrient media. The adhesion index was calculated and analyzed. Results: There was no reliable lowering of adhesion index of Staphylococcus Aureus to all materials detected in Test group 1 (U=6, p>0.05 for Bio XS; U=8, p>0.05 for Dental D, Denotokeep Peek, Vertex Rapid Simplified). In Test group 2, the adhesion index of Staphylococcus Aureus reliably decreased to all materials compared to the Control group (U=0, p≤0.01). The adhesion index of Candida albicans and Escherichia coli to all materials in Test group 1 had a minor to moderate reliable reduction compared to the Control group (U=0, p≤0.01). Test group 2 showed a significant reliable decrease in Candida albicans and Escherichia coli adhesion index to all materials in comparison with the Control group (U=0, p≤0.01). Conclusion: The research showed an unreliable or minor and moderate reliable decrease in microorganisms adhesion index depending on the microorganism species after treatment of denture material specimens by antibacterial soap “ClearaSept” and a reliable significant decrease in microbial and yeast adhesion after application of Protefix active cleaner solution, which demonstrates a more significant antimicrobial effect in comparison to “ClearaSept” against Staphylococcus aureus, Escherichia coli, and Candida albicans.

scholarly journals A Novel Antimicrobial Phenanthrene Alkaloid from Bryopyllum pinnatum

2011 ◽  
Vol 8 (3) ◽  
pp. 1456-1461 ◽  
Author(s):  
Donatus Ebere Okwu ◽  
Fred Uchenna Nnamdi
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Candida Albicans ◽  
Aspergillus Niger ◽  
Ethanolic Extract ◽  
Klebsiella Pneumonia ◽  
Antimicrobial Studies ◽  
Prevention And Treatment ◽  
Kalanchoe Pinnata ◽  
Isolated Compound

Phenenthrene alkaloid identified as 1-ethanamino 7 hex-1-yne-5I-one phenanthrene was isolated from the ethanolic extract of the leaves ofBryophyllum pinnatum(syn. B. calcinum kalanchoe pinnata) a versatile Nigeria medicinal plant. The structure was elucidated using NMR, IR, UV and MS spectral data. Antimicrobial studies showed that the isolated compound successfully inhibitedPsuedomonas aeruginosa, Klebsiella pneumonia, Staphylococcus aureus, Escherichia coli, Candida albicansandAspergillus niger. This result authenticates the use ofbryophyllum pinantumin phytomedicine for disease prevention and treatment of infections.

scholarly journals Antimicrobial Effect of Plasma-Activated Tap Water on Staphylococcus aureus, Escherichia coli, and Candida albicans

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1480
Author(s):  
William Chiappim ◽  
Aline da Graça Sampaio ◽  
Felipe Miranda ◽  
Mariana Fraga ◽  
Gilberto Petraconi ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Tap Water ◽  
Antimicrobial Effect ◽  
Gliding Arc ◽  
Oxidation Reduction ◽  
Treatment Conditions ◽  
Oxidation Reduction Potential

In this study, the potential antimicrobial activity of plasma-activated tap water (PAW) was evaluated against Staphylococcus aureus, Escherichia coli, and Candida albicans. For this, PAW was prepared in a gliding arc plasma system using two treatment conditions: stagnant water and water stirring by a magnetic stirrer, called moving water. Subsequently, their oxidation-reduction potential (ORP), pH, electrical conductivity (σ), and total dissolved solids (TDS) were monitored in different areas of the sample divided according to the depth of the beaker. It was observed that PAW obtained in dynamic conditions showed a more uniform acidity among the evaluated areas with pH 3.53 and ORP of 215 mV. Finally, standardized suspensions of Staphylococcus aureus (ATCC 6538), Escherichia coli (ATCC 10799), and Candida albicans (SC 5314) were treated with PAW, and the reduction of viable cells determined the antimicrobial effect. Our results indicate that the tap water, activated by plasma treatment using gliding arc, is an excellent inactivation agent in the case of Staphylococcus aureus and Escherichia coli. On the other hand, no significant antimicrobial activity was achieved for Candida albicans.

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