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1

Antifungal activity of triterpenoid isolated from Azima tetracantha leaves

100%
Duraipandiyan V., Gnanasekar M., Ignacimuthu S.
Folia Histochemica et Cytobiologica
|
2010
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tom 48
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nr 2
311-313
2

Reliability of the etest in light of the correlation between an antibiotic's critical concentration [Cc] and MIC values

100%
Bednar M.
Polish Journal of Microbiology
|
2007
|
tom 56
|
nr 3
The study relates to the theory of diffusion methods for antibiotic sensitivity testing. The aim of the study was to show the relationship between the antibiotic critical concentration (Cc) and its minimum inhibitory concentration (MIC). The results contribute to the explanation of the Etest's reliability and support the scientific basis for MIC determination using agar diffusion methods. Susceptibility among 90 clinical isolates of 12 common aerobic bacterial species to gentamicin, erythromycin, or oxacillin was assessed using the multidisc method (for Cc), by the agar dilution method (for MIC) and by the Etest. The results of all three methods were statistically compared and found to be closely related. The regression equation for Cc values and MIC was log₂(MIC)=0.99 x log₂(Cc)-0.13; r=0.99; p<0.05; the regression equation for Cc values and Etest-MIC (Et) was log₂(Et)=0.86xlog₂(Cc)+0.34; r=0.96; p<0.05; the regression equation for Etest-MIC values and MIC was log₂(MIC)=1.12xlog₂(Et)-0.50; r=0.96; p<0.05.
3
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Biosynthesis of zinc oxide nanoparticles using Fumaria parviflora extract and evaluation of their antibacterial and antioxidant activities

84%
Dousti B., Habibi A., Nabipor F.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
|
2021
|
tom 102
|
nr 1
4
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Antidermatophytic activity of ethanolic leaves extract of Limonia acidissima Groff.

84%
Shivakumar Singh P., Vidyasagar G. M.
International Letters of Natural Sciences
|
2015
|
tom 39
In the present study Limonia acidissima Groff. ethanolic leaves extract was used for the detection of its antidermatophytic assay. It results broad spectrum of antifungals and antibacterial. Where the antimycotic activity against Trichophyton rubrum, Trichophyton tonsurans, Trichophyton mentagrophytes, Microsporium gypseum, Candida albicans and four Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa were more pronounced. The effective antidermatophytic activity observed against M. gypseum, T. tonsurans, E. coli and B. subtilis. Minimum Inhibitory Concentration of all the test microbes was determined using broth dilution technique. MFC, MBC also standardized. Preliminary Phytochemical tests were carried for the revealing basics antimicrobial responsible molecules of secondary metabolites.
5
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Antimycotic activity of low polar petroleum ether and interpolar methanolic young leaf extracts of Solanum nigrum L.

84%
Shivakumar Singh P., Vidyasagar G. M.
International Letters of Natural Sciences
|
2015
|
tom 04
Antimycotic activity of Petroleum ether and 98% methanolic young leaf soxhlet extract of Solanum nigrum (Solanaceae) was evaluated against dermatophytic fungi namely, Trichophyton rubrum, Trichophyton tonsurans, Trichophyton mentagrophytes, Microsporium gypseum, Candida albicans, and bacteria like, Staphylococcus aureus, Psudomonas aeruginosa, Bacillus subtilis, Escherichia coli. The maximum activity was observed in interpolar methanolic extract when compared to low polar petroleum ether extract. The minimum inhibitory concentration, minimum fungicidal concentration and minimum bactericidal concentration were determined against all the test strains. This study provides a basis for the isolation and purification of anti-dermatophytic compounds from the young leaves of S. nigrum.
6

Effects of Carvacrol on Staphylococcus aureus isolated from bulk tank milk

67%
Keyvan E., Tutun H.
Medycyna Weterynaryjna
|
2019
|
tom 75
|
nr 04
The occurrence of multidrug-resistant Staphylococcus aureus is an important causative agent of mastitis in cattle and of foodborne diseases. It is a worldwide concern, making it essential to develop alternative treatments to fight against the bacteria. Thus, the aim of this study is to determine the ability of carvacrol to inhibit the growth of S. aureus isolated from bulk tank milk in Turkey’s Burdur Province. All strains (n = 31) were used to investigate the antimicrobial activity of carvacrol, including the methicillin-resistant S. aureus and strains from the American Type Culture Collection and England’s National Collection of Type Cultures. The minimum inhibitory concentration (MIC) values were determined via a microdilution method, and the antimicrobial susceptibility profiles via a disk diffusion method. Antibiotic resistance was detected in 20 strains (64.5%). Multidrug resistance was observed in 8 strains (25.8%). Carvacrol exhibited strong antimicrobial activity, with MIC value at 0.058-0.234 mg/ml, in the microdilution method. Inhibition zones of carvacrol were in the range of 19 to 45 mm. The results of this study emphasize the promising role of carvacrol among new antibacterial agents that can combat S. aureus strains.
7

Exposure to chlorine affects the extracellular polymeric substance production and cell surface hydrophobicity in biofilm bacteria

67%
Rathi R., Satheesh S.
Oceanological and Hydrobiological Studies
|
2012
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tom 41
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nr 4
8

Antibacterial activity of plumbagin and root extracts of Plumbago zeylanica L.

67%
Jeyachandran R., Mahesh A., Cindrella L., Sudhakar S., Pazhanichamy K.
Acta Biologica Cracoviensia. Series Botanica
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2009
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tom 51
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nr 1
17-22
This work assesses the antibacterial activity of plumbagin (5-hydroxy-2-methylnaphthalene-l,4-dione) and of methanol, chloroform and aqueous extracts of Plumbago zeylanica L. root against various pathogenic bacteria, and the minimum inhibitory concentrations (MICs). Plumbagin and chloroform extracts of Plumbago zeylanica L. root showed antibacterial activity against Escherichia coli, Salmonella typhi and Staphylococcus aureus. Inhibition against Klebsiella pneumoniae, Serratia marcescens and Bacillus subtilis was moderate, and lower against Proteus vulgaris and Pseudomonas aeruginosa. The methanolic extract exhibited moderate activity and the aqueous extract weak activity against the bacterial strains as assessed by disc diffusion assays. The bioactive compound plumbagin and extract of Plumbago zeylanica root show a wide spectrum of antibacterial activity. The compound shows promise as a new drug for various bacterial infectious diseases.
9
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Phytochemical evaluation and comparative antibiocide efficacy of Aqueous, Ethanolic and equal mixture of aqueous and ethanolic (1:1) bark extract of Lannea coromandelica L. procured from Eastern region of India

67%
Das K.
International Letters of Natural Sciences
|
2014
|
tom 21
The present investigation was evaluating the potential antibacterial activity of three different extracts of the bark of Lannea coromandelica Linn. (LC) tree procured from Eastern India. Extraction of bark separation was carried out using aqueous, ethanol and a mixture of aqueous and ethanol. Microbiocides of all the extracts were separately evaluated against several microorganisms viz. Bacillus substilis, Staphylococcus aureus, Streptococcus pyogenes, Pseudomonus aeruginosa, Escherichia coli and Serratia marcescens by agar diffusion technique. The Minimum Inhibition Concentration (MIC) of all the extracts was carried out by the serial dilution method. The results of MIC ranged from 12.5 to 150 mg/ml (all the three extracts). The concentration dependent (**P < 0.01) potential antimicrobial activity was resulted and at the dose of 200 mg/ml, combined aqueous and ethanol extract of LC (LCAE + LCEE) gave significant results against gram positive bacteria where the maximum zone of inhibition was recorded against Streptococcus pyogenes (17.0± 0.05**) followed by Straphyloccus aureus (13.6 ±0.05**). Further, the same extract showed the maximum relative percentage inhibition against Straphyloccus aureus (178.64%) followed by Streptococcus pyogenes (143.42%). Such variation may be due to the effects of choice of solvent and the quantity of the extracted amount and also the geographical source of the plant part. These results represent scientific evidence to support the traditional medicinal uses of LC bark extracts and indicate a promising potential used against the treatment of infectious diseases caused by pathogenic bacteria and also provide scientific evidence for their efficacy to prepare the alternate newer medicine for antibiotics.
10
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Antimicrobial properties of 6-bromoeugenol and eugenol

67%
Mahboub R., Memmou F.
International Letters of Natural Sciences
|
2016
|
tom 53
We have studied the antimicrobial properties of 6-bromoeugenol and eugenol by three strains: Pseudomonas aeruginosa (S1), Escherichia coli (S2) and Staphylococcus aureus (S3). We have determined the minimum inhibitory concentration (MIC) for a range of concentrations using the disc diffusion method. We note that all samples present an antimicrobial activity toward the tested bacterial strains at different concentrations (1, 0.5 and 0.25 mg/ml). The 6-bromoeugenol gives modest activity with (S1) and (S3). Eugenol reacts positively with the Pseudomonas aeruginosa (S1) at all concentrations and with the Escherichia coli (S2) at 0.5 mg/ml. We remark that the Pseudomonas aeruginosa (S1) is the more sensitive strain than Escherichia coli (S2) and Staphylococcus aureus (S3). We have estimated the activity coefficient which has confirmed the antimicrobial activity of the different samples. So, 6-bromoeugenol has shown his efficiency as antimicrobial agent.
11

Długoterminowe badanie antybiotykowrażliwości bakterii, izolowanych z układu rozrodczego, oddechowego i pokarmowego świń, w Europie (1998-2009)

43%
Giboin H., Kroemer S., Galland D., El Garch F., Woerhle F.
Lecznica Dużych Zwierząt. Ogólnopolski Kwartalnik dla Lekarzy Weterynarii
|
2014
|
tom 09
|
nr 2
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