Diethylmethyl chitosan as an antimicrobial agent: Synthesis, characterization and antibacterial effects

Avadi, Mohammad Reza; Sadeghi, A.M.M.; Tahzibi, A.; Bayati, Kh.; Pouladzadeh, M.; Zohuriaan‐Mehr, M. J.; Rafiee-Tehrani, Morteza

doi:10.1016/j.eurpolymj.2004.02.015

Cited by 191 publications

(109 citation statements)

References 24 publications

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“…For growth inhibitory concentration (PMIC) the presence of viable microorganisms was tested and the lowest concentration causing bactericidal effect was reported as MBC as suggested by Avadi et al [28]. To test for bactericidal effect, a loopful from each flask was inoculated on nutrient agar and incubated at 35°C for 24 h. The nanoparticle concentration causing bactericidal effect was selected based on absence of colonies on the agar plate.…”

Section: Determination Of Minimum Inhibitory Concentration (Mic) and mentioning

confidence: 99%

Strain specificity in antimicrobial activity of silver and copper nanoparticles

Chatterjee²,

et al. 2008

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Section: Determination Of Minimum Inhibitory Concentration (Mic) and mentioning

confidence: 99%

Strain specificity in antimicrobial activity of silver and copper nanoparticles

Chatterjee²,

et al. 2008

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“…The negatively charged surface of the bacterial cell wall interacts effectively to a greater degree with the polycationic nanochitosan (NH 3 + ) and hinders the growth of the microorganism [60]. Chitosan nano-particles provide higher affinity with bacteria cells for a quantum-size effect, due to the larger surface area of the chitosan nanoparticles, which could be tightly adsorbed onto the surface of the bacteria cells to disrupt the membrane, which would lead to the leakage of intracellular components, thus killing the bacteria cells [61,62].…”

Section: Antibacterial Activitymentioning

confidence: 99%

Synthesis, Characterization and Applications of Nanochitosan/Sodium Alginate/Microcrystalline Cellulose Film

Vijayalakshmi¹,

Bm²,

PN³

et al. 2016

J Nanomed Nanotechnol

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The antimicrobial potential of the synthesized ternary nanochitosan (NCS)/sodium alginate (SA)/microcrystalline cellulose (MC) (extracted from banana fiber) film in 4:16:1 ratio against Bascillus subtilis and E. coli are reported here. Initially the present work focuses on the synthesis and characterization of ternary nanochitosan (NCS)/sodium alginate (SA)/microcrystalline cellulose (MC) (extracted from banana fiber) film. The prepared NCS/SA/MC film sample was then characterized using advanced analytical techniques such as FT-IR, XRD, TGA, DSC and SEM studies. The obtained results of FT-IR studies clearly indicate that the nanochitosan gets effectively binded with the sodium alginate and the microcrystalline cellulose in the film form. The change in crystallinity and the increased thermal behavior was elucidated from XRD and TGA analysis respectively. The scanning electron microscopic (SEM) studies of NCS/SA/MC film showed that the prepared film has the improved rough surface morphology and fractured structure. The bactericidal action of NCS/SA/MC film determined using Muller Hinton Agar medium on two microbial strains (Escherichia coli and Bacillus subtilis) reveals that the prepared NCS/SA/MC film has the greater potential to kill the microorganisms to a greater extent and hence this NCS/SA/MC film was found to be suggested as the promising material for biomedical applications.

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“…Some authors suggested the amino groups of the chitosan when in contact with physiological fluids are protonated and bind to anionic groups of the microorganisms, resulting in the agglutination of the microbial cells, and growth inhibition [49,50]. On the other hand, reference [49] report that when interacting with the bacterial cell, the chitosan, promotes displacement of Ca ++ of the anionic sites of the membrane, damaging them.…”

Section: Properties Antimicrobial and Toxicity Of Fungi Chitosanmentioning

confidence: 99%