3D‐printing antibacterial composite filaments containing synergistic antibacterial activity of green tea and tannic acid

2021 ◽  
Author(s):  
Boonlom Thavornyutikarn ◽  
Tareerat Lertwimol ◽  
Wasana Kosorn ◽  
Weerawan Hankamolsiri ◽  
Nutdanai Nampichai ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
3D Printing ◽  
Green Tea ◽  
Tannic Acid ◽  
Synergistic Antibacterial Activity

scholarly journals Effect of tannic and gallic acids alone or in combination with carbenicillin or tetracycline on Chromobacterium violaceum CV026 growth, motility, and biofilm formation

2015 ◽  
Vol 61 (7) ◽  
pp. 487-494 ◽  
Author(s):  
Devendra H. Dusane ◽  
Che O’May ◽  
Nathalie Tufenkji
Keyword(s):  
Antibacterial Activity ◽  
Gallic Acid ◽  
Tannic Acid ◽  
Bacterial Growth ◽  
Biofilm Formation ◽  
Opportunistic Pathogen ◽  
Chromobacterium Violaceum ◽  
Minimum Inhibitory Concentrations

Chromobacterium violaceum is an opportunistic pathogen that causes infections that are difficult to treat. The goal of this research was to evaluate the effect of selected tannins (tannic acid (TA) and gallic acid (GA)) on bacterial growth, motility, antibiotic (carbenicillin, tetracycline) susceptibility, and biofilm formation. Both tannins, particularly TA, impaired bacterial growth levels and swimming motilities at sub-minimum inhibitory concentrations (sub-MICs). In combination with tannins, antibiotics showed increased MICs, suggesting that tannins interfered with antibacterial activity. Sub-MICs of tetracycline or TA alone enhanced biofilm formation of C. violaceum; however, in combination, these compounds inhibited biofilm formation. In contrast, carbenicillin at sub-MICs was effective in inhibiting C. violaceum biofilm formation; however, in combination with lower concentrations of TA or GA, biofilms were enhanced. These results provide insights into the effects of tannins on C. violaceum growth and their varying interaction with antibiotics used to target C. violaceum infections.

Synthesis of substituted-amidine derivatives of avibactam and synergistic antibacterial activity with meropenem

2021 ◽  
Vol 31 (4) ◽  
pp. 498-500
Author(s):  
Jian Sun ◽  
Lili He ◽  
Yuanyu Gao ◽  
Lijuan Zhai ◽  
Jingwen Ji ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Derivatives Of ◽  
Synergistic Antibacterial Activity

ZnO/Ag nanohybrid: synthesis, characterization, synergistic antibacterial activity and its mechanism

RSC Advances ◽  
2012 ◽  
Vol 2 (3) ◽  
pp. 930-940 ◽  
Author(s):  
Somnath Ghosh ◽  
V. S. Goudar ◽  
K. G. Padmalekha ◽  
S. V. Bhat ◽  
S. S. Indi ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Synergistic Antibacterial Activity

Synergistic antibacterial activity of a combination of silver and copper nanoparticle impregnated activated carbon for water disinfection

2017 ◽  
Vol 4 (12) ◽  
pp. 2405-2417 ◽  
Author(s):  
Pritam Biswas ◽  
Rajdip Bandyopadhyaya
Keyword(s):  
Cell Death ◽  
Antibacterial Activity ◽  
Activated Carbon ◽  
Bacterial Activity ◽  
Water Disinfection ◽  
Copper Nanoparticle ◽  
Schematic Representation ◽  
E Coli ◽  
Synergistic Antibacterial Activity

Schematic representation of E. coli cell death using the synergistic anti-bacterial activity of a mixture of Ag-AC and Cu-AC hybrids.

scholarly journals Novel Eco-Friendly Tannic Acid-Enriched Hydrogels-Preparation and Characterization for Biomedical Application

Materials ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 4572
Author(s):  
Beata Kaczmarek ◽  
Oliwia Miłek ◽  
Marta Michalska-Sionkowska ◽  
Lidia Zasada ◽  
Marta Twardowska ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Sodium Alginate ◽  
Tannic Acid ◽  
Biomedical Applications ◽  
Biomedical Application ◽  
Activity Assay ◽  
Cell Compatibility ◽  
Gram Positive Bacteria ◽  
Biomineralization Process ◽  
Acid Release

Sodium alginate and tannic acid are natural compounds that can be mixed with each other. In this study, we propose novel eco-friendly hydrogels for biomedical applications. Thus, we conducted the following assessments including (i) observation of the structure of hydrogels by scanning electron microscope; (ii) bioerosion and the concentration of released tannic acid from subjected material; (iii) dehydrogenase activity assay to determine antibacterial activity of prepared hydrogels; and (iv) blood and cell compatibility. The results showed that hydrogels based on sodium alginate/tannic acid exert a porous structure. The immersion in simulated body fluid (SBF) results in the biomineralization process occurring on their surface while the bioerosion studies revealed that the addition of tannic acid improves hydrogels’ stability proportional to its concentration. Besides, tannic acid release concentration depends on the type of hydrogels and the highest amount was noticed for those based on sodium alginate with the content of 30% tannic acid. Antibacterial activity of hydrogels was proven for both Gram-negative and Gram-positive bacteria, the hemolysis rate was below 5% and the viability of the cells was elevated with an increasing amount of tannic acid in hydrogels. Collectively, we assume that obtained materials make the imperative to consider them for biomedical applications.

Violacein@Biogenic Ag system: synergistic antibacterial activity against Staphylococcus aureus

2019 ◽  
Vol 41 (12) ◽  
pp. 1433-1437 ◽  
Author(s):  
Gerson Nakazato ◽  
Marcelly Chue Gonçalves ◽  
Meiriele da Silva das Neves ◽  
Renata Katsuko Takayama Kobayashi ◽  
Marcelo Brocchi ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Synergistic Antibacterial Activity
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