ChemInform Abstract: Synthesis, Lipophilicity Studies and Antibacterial Properties of Some Novel Quaternary Ammonium Salts.

ChemInform ◽  
2010 ◽  
Vol 25 (37) ◽  
pp. no-no
Author(s):  
T. SIATRA-PAPASTAIKOUDI ◽  
A. PAPADAKI-VALIRAKI ◽  
A. TSANTILI-KAKOULIDOU ◽  
L. TZOUVELEKIS ◽  
A. MENTIS
Keyword(s):  
Quaternary Ammonium ◽  
Antibacterial Properties ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts

Synthesis and Antibacterial Properties of Several Unsaturated Quaternary Ammonium Salts

2013 ◽  
Vol 47 (9) ◽  
pp. 477-480 ◽  
Author(s):  
J. V. Grigoryan ◽  
G. T. Sargsyan ◽  
A. Kh. Gyulnazaryan ◽  
R. V. Paronikyan ◽  
G. M. Stepanyan
Keyword(s):  
Quaternary Ammonium ◽  
Antibacterial Properties ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts

Synthesis, Characterization and Antibacterial Properties of Dihydroxy Quaternary Ammonium Salts with Long Chain Alkyl Bromides

2014 ◽  
Vol 85 (1) ◽  
pp. 91-97 ◽  
Author(s):  
Wen-Shuai Liu ◽  
Chun-Hua Wang ◽  
Ju-Feng Sun ◽  
Gui-Ge Hou ◽  
Yu-Peng Wang ◽  
...  
Keyword(s):  
Quaternary Ammonium ◽  
Antibacterial Properties ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Alkyl Bromides ◽  
Long Chain

scholarly journals Synthesis, Lipophilicity Studies and Antibacterial Properties of Some Novel Quaternary Ammonium Salts.

1994 ◽  
Vol 42 (2) ◽  
pp. 392-394 ◽  
Author(s):  
Theodora SIATRA-PAPASTAIKOUDI ◽  
Aspasia PAPADAKI-VALIRAKI ◽  
Anna TSANTILI-KAKOULIDOU ◽  
Leonidas TZOUVELEKIS ◽  
Andreas MENTIS
Keyword(s):  
Quaternary Ammonium ◽  
Antibacterial Properties ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts

Study of the Resistance of PVC Composite Materials Modified with Wollastonite Activated by QAS to Bacteria

2021 ◽  
Vol 899 ◽  
pp. 132-136
Author(s):  
Dilyara F. Sadykova ◽  
Elena M. Gotlib ◽  
Elena V. Perushkina ◽  
Alla G. Sokolova
Keyword(s):  
Quaternary Ammonium ◽  
Antibacterial Properties ◽  
Antimicrobial Properties ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Materials Used

Evaluation of the antibacterial properties of PVC materials used, in particular, in medicine, is becoming increasingly important due to increased sanitary and hygienic requirements. One of the ways to ensure the resistance of PVC materials to microorganisms is modification with wollastonite, the surface of which is activated by quaternary ammonium salts (QASs). QASs are known for their antimicrobial properties. The results obtained indicate that the basic composition of linoleum is somewhat more resistant to gram-positive bacteria than to gram-negative bacteria. The introduction of wollastonite into the PVC compound formulation increases the resistance to the studied groups of microorganisms. It can be concluded that the surface treatment of Mivoll 10-97 by QAS generally improves the bactericidal properties of the material. The results obtained are consistent with the literature data on the activity of cationic QACs in relation to gram-positive and gram-negative bacteria. Quaternary ammonium salts have the ability to be attracted to the outer surface of the negatively charged bacterial membrane due to the positive charge of their molecules.

Synthesis and stability of 1-aminoalkylphosphonic acid quaternary ammonium salts

2021 ◽  
Author(s):  
Tomasz K. Olszewski ◽  
Anna Brol
Keyword(s):  
Phosphonic Acid ◽  
Quaternary Ammonium ◽  
Alkylating Agent ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Aminoalkylphosphonic Acid

An effective protocol for quaternization of simple 1-aminoalkylphosphonic acids under basic conditions and using Me2SO4 as convenient alkylating agent is reported. In the course of reaction phosphonic acid quaternary ammonium...

scholarly journals Green Accelerated Synthesis, Antimicrobial Activity and Seed Germination Test of Quaternary Ammonium Salts of 1,2-bis(4-pyridyl)ethane

Molecules ◽  
2019 ◽  
Vol 24 (13) ◽  
pp. 2424 ◽  
Author(s):  
Tăbăcaru ◽  
Botezatu ◽  
Horincar ◽  
Furdui ◽  
Dinică
Keyword(s):  
Escherichia Coli ◽  
Triticum Aestivum ◽  
Seed Germination ◽  
Quaternary Ammonium ◽  
Pathogenic Bacteria ◽  
Classical Method ◽  
Triticum Aestivum L ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Radicle Growth

A family of fifteen quaternary ammonium salts (QAs), bearing the 1,2-bis(4-pyridyl)ethane core, were obtained using for the first time two different green methods, such as microwave (MW) and ultrasounds (US) irradiation, with very good yields and in much shorter times compared to the classical method, and an assay on their antimicrobial action against Escherichia coli (E. coli) was carried out. While 12 to 24 hours were required for complete alkylation of 1,2-bis(4-pyridyl)ethane by reactive halogenated derivatives in anhydrous solvent under reflux conditions, MW and US irradiation reduced the reaction time and the desired products were achieved in a few min. One of the aims of this study was to evaluate the antibacterial potential of the synthesized QAs against pathogenic bacteria, along with their impact on germination activity of wheat seeds (Triticum aestivum L.). The antibacterial activity of the QAs against Escherichia coli was explored by determining the minimum inhibitory concentration (MIC). The MIC values varied from 0.312 to 2.5 mg/mL, highlighting the lowest values attained for the derivatives containing methoxy, chlorine and benzofurane functional groups. The viability of aerobic bacteria was determined with the Tetrazolium/Formazan Test, a method that was found to be the best alternative approach with respect to the difuzimetric method. Seeds of Triticum aestivum L. were used for the evaluation of the germination indicators, such as seed germination (SG), the relative seed germination (RSG), the relative radicle growth (RRG), and the seed germination index (GI). The toxicity studies of QAs 1, 4 and 7, at two different concentrations, showed no inhibitory effect on seed germination.

Interaction of water-insoluble quaternary ammonium salts with the hydrated silica surface

1996 ◽  
Vol 32 (6) ◽  
pp. 331-334
Author(s):  
V. V. Turov ◽  
O. A. Zaporozhets ◽  
O. Yu. Nadzhafova ◽  
V. V. Sukhan
Keyword(s):  
Quaternary Ammonium ◽  
Silica Surface ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Hydrated Silica
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