scholarly journals Relação entre coloração e atividade antibacteriana do mel da Bahia

2021 ◽  
Vol 21 ◽  
Author(s):  
Andrezza Lóren de Góes Nascimento ◽  
Raquel Guimarães Benevides
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Chemical Composition ◽  
Significant Relationship ◽  
Complex Chemical ◽  
Complex Chemical Composition ◽  
The Relationship ◽  
And Staphylococcus Aureus ◽  
Antibacterial Potential

Honey is a material of varied consistency and color, produced by bees from material collected in flowers, the nectar. It has a complex chemical composition, which depends on several factors, mainly of botanical and climatic origin, and a color scale for honey has been established. In this study, we evaluated the relationship between the color of 10 honey samples collected in the state of Bahia and their activity against three species of bacteria: Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. The antibacterial potential was verified in all samples and a significant relationship between color and microbial activity against Staphylococcus aureus was obtained, reinforcing the hypothesis that darker honeys tend to have greater antibacterial potential.

scholarly journals Chemical Composition and Antibacterial Activity of Cupressus dupreziana A. Camus

2007 ◽  
Vol 2 (9) ◽  
pp. 1934578X0700200 ◽  
Author(s):  
Messaoud Ramdani ◽  
Oualida Rached ◽  
Hocine Laouer ◽  
Meriem El Koli ◽  
Takia Lograda
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Diffusion Method ◽  
Germacrene D ◽  
And Staphylococcus Aureus

The essential oils obtained by hydrodistillation from the green branchlets of Cupressus dupreziana A. Camus growing wild in Tassili n'Ajjer (Algeria) were analyzed by GC and GC/MS. The main constituents of the essential oils were α-pinene (27.2% - 44.2%), germacrene D (16.2% - 27.2%) and Δ3-carene (14.2% - 26.7%). The oils showed insignificant activity on the growth of Escherichia coli (ATCC 25922), Pseudomonas aeruginosa (ATCC 27853) and Staphylococcus aureus (ATCC 25923), when investigated by the diffusion method.

Chemical Composition and Antibacterial Activity of Essential Oils of Three Medicinal Plants from Algerian Semi-Arid Climatic Zone

2018 ◽  
Vol 16 (S1) ◽  
pp. S155-S163 ◽  
Author(s):  
S. Mehalaine ◽  
O. Belfadel ◽  
T. Menasria ◽  
A. Messaili
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Rosmarinus Officinalis ◽  
Salvia Officinalis ◽  
Thymus Algeriensis

The present study was carried out to determine, for the first time, the chemical composition and antibacterial activity of essential oils derived from the aerial parts of three aromatic plants Thymus algeriensis Boiss & Reut, Rosmarinus officinalis L., and Salvia officinalis L. growing under semiarid conditions. The essential oils were chemically analyzed and identified by gas chromatography (GC) and GC/ mass spectrometry (GC/MS) and their antimicrobial activity was individually evaluated against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa using both agar disk diffusion and agar dilution methods. The major constituents of Thymus algeriensis essential oil were identified as camphor (13.62%), 1,8-cineol (6.00%), borneol (5.74%), viridiflorol (4.00%), and linalool (3.93%). For Rosmarinus officinalis essential oil, 48 compounds were characterized, of which the main constituents were camphor (17.09%), Z-β-ocimene (10.88%), isoborneol (9.68%), α-bisabolol (7.89%), and borneol (5.11%). While, Salvia officinalis essential oil was characterized by β-thujone (16.44%), followed by viridiflorol (10.93%), camphor (8.99%), 1,8-cineol (8.11%), trans-caryophyllene (5.85%), and α-humulene (4.69%) as the major components. Notably, results from antibacterial screening indicated that Thymus algeriensis and Salvia officinalis essential oils exhibited a strong inhibitory effect against both Escherichia coli and Staphylococcus aureus compared to Rosmarinus officinalis essential oil. Further, less activity was recorded against Pseudomonas aeruginosa for the three tested essential oils.

Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus Attachment Patterns on Glass Surfaces with Nanoscale Roughness

2008 ◽  
Vol 58 (3) ◽  
pp. 268-273 ◽  
Author(s):  
Natasa Mitik-Dineva ◽  
James Wang ◽  
Vi Khanh Truong ◽  
Paul Stoddart ◽  
Francois Malherbe ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Attachment Patterns ◽  
Glass Surfaces ◽  
And Staphylococcus Aureus ◽  
Nanoscale Roughness

scholarly journals Quinolone accumulation in Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus.

1992 ◽  
Vol 36 (8) ◽  
pp. 1601-1605 ◽  
Author(s):  
C McCaffrey ◽  
A Bertasso ◽  
J Pace ◽  
N H Georgopapadakou
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
And Staphylococcus Aureus

scholarly journals Antibacterial Activity of Biologically Synthesized Silver and Zinc Nanoparticles Using Allcemilla vulgaris (Layd’s Mantle) Leaf Extract

2019 ◽  
pp. 1-11
Author(s):  
Dilek Demirezen-Yilmaz ◽  
Fatih Doğan Koca ◽  
Nurhan Ertaş-Onmaz
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Inhibitory Concentration ◽  
Escherichia Coli O157 ◽  
X Ray Diffraction ◽  
Zinc Nanoparticles ◽  
X Ray ◽  
Vis Spectroscopy ◽  
And Staphylococcus Aureus ◽  
Antibacterial Potential

In this study, the powder of Allcemilla vulgaris was used in the sythesis of silver and zinc nanoparticle. Biologically synthesized nanoparticles were characterized using Scanning Electron Microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), UV-Vis spectroscopy, X-ray diffraction (XRD) and Zeta potential and then evaluated for antibacterial potential using micro dilution broth method. The minimum inhibitory concentration values of AgNP were 4.25 µg/mL and 6.64 µg/ mL for Escherichia coli O157:H7 and Staphylococcus aureus, respectively. Similarly, the MIC values of ZnNP were 3.32 µg/mL and 6.25 µg/mL, respectively for Escherichia coli O157:H7 and Staphylococcus aureus.

scholarly journals CHEMICAL COMPOSITION AND ANTIMICROBIAL ACTIVITY OF THE ESSENTIAL OILS OF FOUR VARIETIES OF LIPPIA MULTIFLORA IN BENIN

2019 ◽  
Author(s):  
GANDONOU Dossa Clément ◽  
BAMBOLA Bouraïma ◽  
TOUKOUROU Habib ◽  
GBAGUIDI Ahokannou Fernand ◽  
DANSOU Christian ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Gas Chromatography ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Diffusion Method ◽  
Lippia Multiflora ◽  
Natural Substances

Present study involves the study of the chemical composition of the essential oils extracted from the leaves by gas chromatography and gas chromatography coupled with mass spectrometry of Lippia multiflora harvested in the regions of Kétou, Savalou, Bohicon and Mono and tested by the well diffusion method against pathogenic microorganisms. The essential oils studied are terpene compounds, aromatic compounds, aliphatic compounds and other natural substances. The inhibition zone diameters determined allowed us to evaluate their degree of germ sensitivity of the strains tested. Essential oils extracted from Lippia multiflora harvested in these areas have the most pronounced antimicrobial activity. In total, the essential oils tested have different and specifically a degree of sensitivity against Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 25922, Proteus mirabilis A24974, Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeruginosa except that harvested in the Savalou who does not have no degree of sensitivity on Pseudomonas aeruginosa. This work paves the way for food preservation with extracted natural substances and also the formulation of natural antimicrobials for this fact.

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