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100 results for “antimicrobial activity”
Phytochemical Screening, Antioxidant and Antimicrobial Activity of Fabric Coated with Catharanthus Roseus Ethanolic Flowers Extract
<p>The aim of the present study was to evaluate the free radical scavenging and antimicrobial activity of fabric coated of the Catharanthus Roseus. Ethanol flowers extract. Free radical scavenging was determined by using 1, 1-diphenyl-2-picrylhydrazyl (DPPH), Reducing power, Hydroxyl radical scavenging assay and antimicrobial activity of Staphylococcus aureus, Escherichia coli and standard drug of Streptomycin using disc diffusion method. This inhibition was observed with the individual extracts and when they were used in lower concentrations with ineffective antibiotics. The present investigation clearly indicates that the Catharanthus Roseus possesses antioxidant properties and serve as free radical inhibitors or scavengers, acting possibly as primary antioxidants.</p><p>Keywords</p><p>Catharanthus Roseus, Fabric coated, DPPH, Staphylococcus aureus Escherichia coli, Streptomycin, Antioxidant,</p>
Dataset for "Biocompatible Rhamnolipid Self-Assemblies with pH-Responsive Antimicrobial Activity"
<p>This dataset provides the raw data supporting the paper: Biocompatible Rhamnolipid Self-Assemblies with pH-Responsive Antimicrobial Activity. It comprises SAXS data (Figure 2, Figure 3, Figure 4, Figure 5, Figure S2 and Figure S4), cryo-TEM images (Figure 2D, Figure 4D, Figure 5D, Figure 5E), Zeta-potential measurment (Figure 7), DLS data (Figure 8, Figure S5, Figure S6, Figure S7, Figure S8 and Table S2), Antimicrobial activity data (Figure 9, Table 1, Figure S9, Figure S10, Figure S12, Figure S13, Figure S14, Figure S15, Figure S16 and Table S3), Cytotoxicity data (Figure 10), Colloidal stability images (Figure S1 and Figure S3) and Biofilm inhibition and biofilm eradication assay (Figure S11).</p><p> </p>
Comparison of Leaves and Stem Aqueous Extract of Tridax Procumbens for Antimicrobial Activity
<p>In present study, aq. extracts of leaves and stem part of Tridax Procumbens were compared for antimicrobial activity. Firstly, all organoleptic and physicochemical properties of leaves and stem powder were evaluated and it shows that drug is pure and having required constituents sufficiently. Aq. extract of leaves powder and stem powder was prepared separately using Soxhlet extraction technique. Both the extracts were evaluated for physiochemical screening using standard procedures. Aq. extract of leaves shows presence of tannis, saponins, anthocyanin, coumarins, alkaloids, proteins, amino acids, diterpenes, phytosterol, cardial glycosides, phlobatannins and flavonoids. Aq. extract of stem shows presence of tannins, coumarins, phenol, cardial glycosides and flavonoids. Both extracts were primarily evaluated for antimicrobial activity against E.coli and S. aureus by selecting dose of 500 mg. Finally, antimicrobial assay was performed for both extracts (500mg) against E.coli and S. aureus by well diffusion method using Amoxicillin and Amikacin as standards respectively. Antimicrobial assay shows that aq. extract of stem part is more effective against S. aureus than E.coli; leaves aq. extract also shows antimicrobial activity against S .aureus and E.coli. From present studies we can conclude that aq. extract of stem and leaves of Tridax Procumbens having antimicrobial activity and stem extract is more effective against S. aureus as compared to leaf extract. </p>
Fig. 2 — Chromatogram for A in Antimicrobial activity of the crude peptide extracts from Blackfin sea catfish Arius jella Day, 1877
Fig. 2 — Chromatogram for A. jella peptide extract using FPLC: a) 5 % Sep-Pak fraction, b) 40 % Sep-Pak fraction, and c) 80 % Sep-Pak fraction
Figure 2 in In vitro study of antimicrobial activity of some plant seeds against bacterial strains causing food poisoning diseases
Figure 2. MIC's of the effective plant seeds powder against S. aureus and K. pneumonia, ± standard error.
Figure 4 in Antimicrobial activity of noni fruit essential oil on Escherichia coli O157:H7 and Salmonella Enteritidis
Figure 4. The GC chromatogram of noni EO: 1. α-pinene; 2. camphene; 3. Methyl ester; 4. 2- heptanone; 5. Caprylic acid.
Figure 1 in Antimicrobial activity of noni fruit essential oil on Escherichia coli O157:H7 and Salmonella Enteritidis
Figure 1. The effect of noni EO on E. coli O157:H7 and S. Enteritidis using the direct spreading- plate method on the MIC value of noni EO towards both pathogens.
Figure 3 in Antimicrobial activity of noni fruit essential oil on Escherichia coli O157:H7 and Salmonella Enteritidis
Figure 3. The survival of E. coli O157:H7 and S. Enteritidis as affected by noni EO in TBS after a treatment for 16 hours.
Figure 2 in Antimicrobial activity of noni fruit essential oil on Escherichia coli O157:H7 and Salmonella Enteritidis
Figure 2. The effect of noni EO on E. coli O157:H7 and S. Enteritidis using the broth dilution method in TBS to determine the MBC value of noni EO against both pathogens.
Fig. 1 in Antimicrobial activity of the crude peptide extracts from Blackfin sea catfish Arius jella Day, 1877
Fig. 1 — Photograph of experimental species Arius jella
Fig 1 in Antimicrobial activity of pandanus leaves extract to against Aeromonas hydrophila which attacked catfish
Fig 1: Inhibition test of Aeromonas hydrophila bacteria
Green synthesis of ZnO nanoparticles using Cocos nucifera leaf extract: Characterization, antimicrobial, antioxidant, and photocatalytic activity
<p>Zinc oxide nanoparticles (ZnO NPs) have been successfully prepared using <em>Cocos nucifera</em> leaf extract and investigated with their antimicrobial, antioxidant, and photocatalytic activity. The structural, compositional, and morphological properties of the NPs were recorded and studied systematically to confirm the synthesis. The aqueous suspension of NPs showed a UV-Vis. absorption maxima of 370 nm indicating primarily its formation. The XRD analysis identified the NPs with hexagonal wurtzite structure with an average particle size of 16.6 nm. The FTIR analysis identified some biomolecules and functional groups in the leaf extract as responsible for the encapsulation and stabilization of ZnO NPs. The EDX analysis showed the desired elemental compositions in the material. A flower-shaped morphology of ZnO NPs was observed by SEM with a grain size of around 15 nm. The optical properties of the NPs were studied by UV-Vis spectroscopy and the bandgap was calculated as 3.37 eV. The Prepared ZnO NPs have demonstrated antimicrobial activity against <em>T. harzianum</em>, and <em>S. aureus</em> with a ZOI (zone of inhibition) of 14 and 10 mm, respectively. The photocatalytic behavior of ZnO NPs showed absorbance degradation at around 640 nm and discolored methylene blue dye after one hour with a degradation maximum of 84.29 %. Thus, the prepared ZnO NPs could be used potentially in antibiotic development, pharmaceutical industries, and as photocatalysts. </p>
Assessment of antimicrobial activity of melittin encapsulated in bicontinuous microemulsions prepared using renewable oils
<p>The objective of this study is to demonstrate that melittin, a well-studied antimicrobial peptide (AMP), can be solubilized in an active form in bicontinuous microemulsions (BMEs) that employ biocompatible oils. The systems investigated consisted of Winsor-III and -IV BME phases composed of Water/Aerosol-OT (AOT)/Polysorbate 85/isopropyl myristate and a Winsor-IV BME employing Polysorbate 80 and limonene. We found that melittin resided in an a-helix-rich configuration and was in an apolar environment for the AOT/Polysorbate 85 Winsor-III system, suggesting that melittin interacted with the surfactant monolayer and was in an active conformation. An apolar environment was also detected for melittin in the two Winsor-IV systems, but to a lesser extent than the Winsor-III system. Small-angle X-ray scattering analysis indicated that melittin at a concentration of 1.0 g/L<sub>aq</sub> in the aqueous subphase of the Winsor-IV systems led to the greatest impact on the BME structure (e.g., decrease of quasi-periodic repeat distance and correlation length and induction of interfacial fluidity). The antimicrobial activity of the Polysorbate 80 Winsor-IV system was evaluated against several bacteria prominent in chronic wounds and surgical site infections (SSIs). Melittin-free BMEs inhibited the growth of all tested bacteria due to its oil, limonene, while the inclusion of 1.0 g/L<sub>aq</sub> of melittin in the BMEs enhanced the activity against several bacteria. A further increase of melittin concentration in the BMEs had no effect. These results demonstrate the potential utility of BMEs as a delivery platform for AMPs and other hydrophilic and lipophilic drugs to inhibit antibiotic-resistant microorganisms in chronic wounds and SSIs.</p>
Antimicrobial activity, in millimeters, of Irreversible Hydrocolloids against S. aureus
<p> Antimicrobial activity, in millimeters, of Irreversible Hydrocolloids incorporated with various disinfectant against S. aureus</p>
Antimicrobial activity, in millimeters, of Irreversible Hydrocolloids against C. albicans
<p>Antimicrobial activity, in millimeters, of Irreversible Hydrocolloids incorporated with against C. albicans </p>
Amphiphilic Cyclic Antimicrobial Peptides Derived from the [W4R4] Scaffold: Structural Studies and Correlation with Activity
<p>Data for Publication “Amphiphilic Cyclic Antimicrobial Peptides Derived from the [W4R4] Scaffold: Structural Studies and Correlation with Activity.” The file archive "<em>WR_peptides_MD.zip</em>" contains the starting structures of peptides, molecular topologies of peptides, representative MD trajectories of peptides in water and the DOPC/DOPG bilayer, as well as MD simulation parameters. See the README.txt file in this archive for details.</p>
Data from: Gramicidin and chlorhexidine encapsulated in bicontinuous microemulsions: Antimicrobial activity performance and their impact on self-assembly
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Assessment of antimicrobial activity of melittin encapsulated in bicontinuous microemulsions prepared using renewable oils
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Green synthesis of ZnO nanoparticles using Cocos nucifera leaf extract: Characterization, antimicrobial, antioxidant, and photocatalytic activity
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Tactic-specific antimicrobial activity suggests a parental care function for accessory glands in a marine toadfish
<p>Males of some species possess extra reproductive organs called accessory glands which are outgrowths of the testes or sperm duct. These organs have a well-established role in reproduction; however, they also appear to have other important functions that are less understood. Here we investigate the function of the highly complex accessory glands of a marine toadfish, <em>Porichthys notatus, </em>a fish with two reproductive male types: large care-providing 'guarder' males and small non-caring 'sneaker' males. While both male types have accessory glands, guarder male accessory glands are much larger relative to their body size. We show that accessory gland fluids strongly inhibit the growth of bacterial genera associated with unhealthy eggs and have no effect on the growth of strains isolated from healthy eggs. This antibacterial effect was particularly pronounced for extracts from guarder males. Furthermore, we demonstrate that both healthy and unhealthy plainfin midshipman eggs have diverse but distinct microbial communities that differ in their composition and abundance. The highly specific inhibitory capacity of accessory gland fluid on bacteria from unhealthy eggs was robust across a wide range of ecologically relevant temperatures and salinities. Collectively, these ecological and molecular observations suggest a care function for the accessory gland, mediated by antimicrobial agents.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.