Ultrasound-assisted catalyst-free phenol-yne reaction for the synthesis of new water-soluble chitosan derivatives and their nanoparticles with enhanced antibacterial properties

Abstract In this work, we systematically investigate the sterilization effect of six kinds of commonly used commercial disinfectants, including the DuPont Virkon disinfectant, peracetic acid disinfectant, sodium hypochlorite, bromogeramine disinfectant, water-soluble allicin, and absolute ethanol, against the Escherichia coli, Staphylococcus aureus, Monilia albican and Clostridium sporogenes. The inhibition zone was used to qualitatively determine the antibacterial effects of the six disinfectants, and then the minimum two-fold dilution method was used to quantitatively determine the minimum inhibitory concentration and minimum bactericidal concentration of the six disinfectants on the four pathogens. The result illustrated that the antibacterial effect of peracetic acid disinfectant is the best, and clostridium sporogenes is the most sensitive to it, followed by bromogermine disinfectant, which can inhibit the four pathogenic bacteria at the concentration recommended by the manufacturer. The antibacterial effect of DuPont Virkon disinfectant, sodium hypochlorite, water-soluble allicin and absolute ethanol is not as good as expected, and cannot inhibit the four kinds of pathogenic bacteria at the recommended concentration. In summary, the antibacterial effect of peracetic acid disinfectant is the strongest, followed by the bromogermine disinfectant, DuPont Virkon disinfectant, sodium hypochlorite and water-soluble allicin. The absolute ethanol exhibits the worst antibacterial properties.

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Study on the Antibacterial Performance of the Antibacterial Shutter Blades

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.815.333 ◽

2013 ◽

Vol 815 ◽

pp. 333-338

Author(s):

Ming Li Liu ◽

Chun Feng Li ◽

Yun Long Wang ◽

Kai Lu ◽

Jiu Yin Pang ◽

...

Keyword(s):

Antibacterial Agent ◽

Antibacterial Agents ◽

Drug Loading ◽

Antibacterial Properties ◽

Water Soluble ◽

Single Factor ◽

Antibacterial Performance ◽

Loading Amount ◽

Single Factor Experiment ◽

Impregnation Solution

This study used Ag-embedded nanoTiO2, xylan and water-soluble Chitosan as antibacterial agents, respectively prepared shutter blades through the treating solution of the different concentration and the different drug loading amount of the poplar veneer. Through a single factor experiment, this paper analyzes that the different antibacterial agent, concentration of antibacterial agent and the drug loading amount have an effect on the antibacterial properties of the shutter blades. The results show that the order of antibacterial performance of the shutter blades impregnated antibacterial agents is the Ag-embedded nanoTiO2, Chitosan, Xylan. Comprehensiv-ely thought the antibacterial properties and economic index, the optimal concentration of the Ag-embedded nanoTiO2 impregnation solution is 1%.

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Novel heterocyclic chitosan derivatives and their derived nanoparticles: Catalytic and antibacterial properties

International Journal of Biological Macromolecules ◽

10.1016/j.ijbiomac.2019.12.277 ◽

2020 ◽

Vol 149 ◽

pp. 682-692 ◽

Cited By ~ 7

Author(s):

Andreii S. Kritchenkov ◽

Anton R. Egorov ◽

Alexey A. Artemjev ◽

Ilya S. Kritchenkov ◽

Olga V. Volkova ◽

...

Keyword(s):

Antibacterial Properties ◽

Chitosan Derivatives

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Ultrasound-assisted Cu(I)-catalyzed azide-alkyne click cycloaddition as polymer-analogous transformation in chitosan chemistry. High antibacterial and transfection activity of novel triazol betaine chitosan derivatives and their nanoparticles

International Journal of Biological Macromolecules ◽

10.1016/j.ijbiomac.2019.06.190 ◽

2019 ◽

Vol 137 ◽

pp. 592-603 ◽

Cited By ~ 13

Author(s):

Andreii S. Kritchenkov ◽

Anton R. Egorov ◽

Artem P. Dysin ◽

Olga V. Volkova ◽

Ludmila A. Zabodalova ◽

...

Keyword(s):

Chitosan Derivatives ◽

Ultrasound Assisted

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Quantitative Evaluation of Ultrasound-Assisted Extraction of 1,3-β-glucans from Dictyophora indusiata Using an Improved Fluorometric Assay

Polymers ◽

10.3390/polym11050864 ◽

2019 ◽

Vol 11 (5) ◽

pp. 864 ◽

Cited By ~ 1

Author(s):

Yuan Fu ◽

Shang Lin ◽

Min Lu ◽

Si-Yu Wei ◽

Jia Zhou ◽

...

Keyword(s):

Quantitative Evaluation ◽

Water Soluble ◽

Fluorometric Assay ◽

Edible Mushrooms ◽

Raw Material ◽

Blue Dye ◽

Improved Method ◽

Ultrasound Assisted Extraction ◽

Assisted Extraction ◽

Ultrasound Assisted

In the present study, an improved fluorometric assay based on aniline blue dye for the specific, accurate, and rapid quantification of 1,3-β-glucans in edible mushrooms was developed and fully validated. Furthermore, the improved method was successfully applied for the quantitative evaluation of water soluble 1,3-β-glucans extracted from Dictyophora indusiata by ultrasound-assisted extraction (UAE) with response surface methodology. Results showed that the improved method exhibited high specificity, accuracy, precision, repeatability, and stability, as well as a wide calibration range of 10–600 µg/mL (R2 > 99.9%). The maximum extraction yields of water soluble 1,3-β-glucans (1.20%) and total polysaccharides (5.41%) were achieved at the optimized extraction parameters as follows: ultrasound amplitude (56%), ultrasound extraction time (15 min), and ratio of liquid to raw material (22 mL/g). The results suggest that the improved fluorometric assay has great potential to be used as a routine method for the quantitative evaluation of 1,3-β-glucans in edible mushrooms and that the UAE method is effective for the extraction of 1,3-β-glucans from edible mushrooms.

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