Strongest antibacterial activity

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Antibacterial activity of Piper betle extracts on Helicobacter pylori and identification of potential compounds

Helicobacter pylori is one of the most common infectious bacteria in the world that causes gastric diseases leading to cancer. The increase of multiple antibiotic resistance rates of H. pylori have been reported worldwide. Thus, development of novel drugs is urgently required. Piper betle has many therapeutic values in traditional medicine. In this study, therefore, we investigated antibacterial activity of P. betle extracts and their fractions against a H. pylori strain isolated in Vietnam.

6p 12120609 23-03-2020 15 0 Download

Synthesis and antibacterial activity of silver/reduced graphene oxide nanocomposites against Salmonella typhimurium and Staphylococcus aureus

In this study, silver/reduced graphene oxide (Ag/rGO) nanocomposites were synthesized in situ using three different mass ratios of silver nitrate and graphene oxide (1:1, 2:1, and 4:1). L-ascorbic acid (LAA) was used as an environment-friendly reducing agent. The characterization of Ag/rGO was investigated using Fourier transform infrared spectroscopy, X-ray diffraction, Raman spectroscopy, and transmission electron microscopy.

7p caygaocaolon1 13-11-2019 28 0 Download

Characterization of Actinomyces strains isolated from mangrove forests in Vietnam

61 actinomycete strains were isolated by culture techniques in mangrove forests in Cat Ba, Hai Phong and Xuan Thuy, Nam Dinh. The 31 isolates (50.82%) showed the antibacterial activity with at least one of test microorganisms including Escherichia coli, Staphylococcus aureus, Bacillus subtilis, and Bacillus cereus, in which two strains SCA N2.2 and GI H1.3 had strongest antibacterial activity. Two strains growed at optimal temperature at 37ºC. Strain SCA N2.2 could grow in the medium with 3% NaCl concentration while GI H1.3 strains growed in the medium without NaCl.

7p nguaconbaynhay 20-10-2019 4 0 Download
Synthesis of zinc oxide graphene oxide nanocomposites as antibacterial materials against staphylococcus aureus and escherichia coli

The test results confirmed that antibacterial activity of ZnO/GO was higher than that of GO and ZnO. Additionally, the ZnO/GO with the ratio of 1:1 is the strongest activity and more active against S. aureus than against E. coli and minimal inhibitory concentration (MIC) value of ZnO/GO 1:1 is 80 µg/mL for S. aureus and 160 µg/mL for E. coli. This novel nanocomposite could be used as a potential material for antimicrobial application.

10p cumeo3000 01-08-2018 39 1 Download