Evaluation of the Antimicrobial Potential of Alginate and Alginate/Chitosan Films Containing Potassium Sorbate and Natamycin

2012 ◽  
Vol 26 (8) ◽  
pp. 479-492 ◽  
Author(s):  
Mariana Altenhofen da Silva ◽  
Beatriz Thie Iamanaka ◽  
Marta Hiromi Taniwaki ◽  
Theo Guenter Kieckbusch
Keyword(s):  
Potassium Sorbate ◽  
Antimicrobial Potential ◽  
Chitosan Films

scholarly journals Modeling of potassium sorbate diffusion through chitosan films

LWT ◽  
2010 ◽  
Vol 43 (4) ◽  
pp. 584-589 ◽  
Author(s):  
Cristiana M.P. Yoshida ◽  
Carlos Eduardo N. Bastos ◽  
Telma T. Franco
Keyword(s):  
Potassium Sorbate ◽  
Chitosan Films

Characterization of active chitosan films as a vehicle of potassium sorbate or nisin antimicrobial agents

2019 ◽  
Vol 87 ◽  
pp. 830-838 ◽  
Author(s):  
Leandro Neodini Remedio ◽  
Jackson Wesley Silva dos Santos ◽  
Vinícius Borges Vieira Maciel ◽  
Cristiana Maria Pedroso Yoshida ◽  
Rosemary Aparecida de Carvalho
Keyword(s):  
Antimicrobial Agents ◽  
Potassium Sorbate ◽  
Chitosan Films

ANTIMICROBIAL POTENTIAL OF ENDOPHYTIC ACTINOBACTERIA FROM MEDICINAL PLANTS

2017 ◽  
Vol 209 (09) ◽  
pp. 106-110
Author(s):  
G.O.O. Hassan ◽  
◽  
I.R. Yagudina ◽  
N.S. Karamova ◽  
◽  
...  
Keyword(s):  
Medicinal Plants ◽  
Antimicrobial Potential ◽  
Endophytic Actinobacteria

Antimicrobial Potential of Benzamides and Derived Nanosystems for Controlling in vitro Biofilm Development on Medical Devices

2013 ◽  
Vol 17 (2) ◽  
pp. 162-175 ◽  
Author(s):  
Carmen Limban ◽  
Alexandru Mihai Grumezescu ◽  
Mariana Chirea ◽  
Lilia Matei ◽  
Mariana Carmen Chifiriuc
Keyword(s):  
Medical Devices ◽  
Antimicrobial Potential ◽  
Biofilm Development

Synthesis, Characterization, Antimicrobial and Antioxidant Potential of Diazenyl Chalcones

2018 ◽  
Vol 18 (10) ◽  
pp. 844-856 ◽  
Author(s):  
Harmeet Kaur ◽  
Balasubramanian Narasimhan
Keyword(s):  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Antioxidant Potential ◽  
Dilution Method ◽  
Dpph Assay ◽  
Antimicrobial Potential ◽  
Structural Conformation ◽  
Uv Visible ◽  
Tube Dilution Method

A series of diazenyl chalcones was prepared by base catalyzed Claisen-Schmidt condensation of synthesized hydroxy substituted acetophenone azo dye with various substituted aromatic/ heteroaromatic aldehydes. The structural conformation of synthesized chalcones was done by a number of physicochemical and spectral means like FTIR, UV-visible, mass, NMR spectroscopy and CHNS/O analysis. These diazenyl chalcones were assessed for their in vitro antimicrobial potential against several Gram-negative, Gram-positive bacterial and fungal strains by serial tube dilution method. The fluconazole and cefadroxil were used as standard drugs. The target compounds were also evaluated for their antioxidant potential by DPPH assay. (2E)-3-(2,4-Dichlorophenyl)-1-(4-((2,6- dihydroxyphenyl)diazenyl)phenyl)prop-2-en-1-one (C-7) had shown very good antimicrobial potential with MIC ranges from 3.79 to 15.76 μg/ml against most of the tested microorganisms. Most of the synthesized diazenyl chalcones were found to be active against B. subtilis. The (2E)-1-(5-((2-Chloro- 4-nitrophenyl)diazenyl)-2-hydroxyphenyl)-3-(2-hydroxynaphthalen-1-yl)prop-2-en-1-one (C-10) had shown high free radical-scavenging activity when compared with the ascorbic acid as the reference antioxidant.

scholarly journals Chitosan as a Protective Matrix for the Squaraine Dye

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1171
Author(s):  
Halina Kaczmarek ◽  
Patryk Rybczyński ◽  
Piotr Maćczak ◽  
Aleksander Smolarkiewicz-Wyczachowski ◽  
Marta Ziegler-Borowska
Keyword(s):  
Solid State ◽  
Uv Radiation ◽  
Dye Degradation ◽  
Protective Coatings ◽  
Protective Action ◽  
High Energy ◽  
Modified Chitosan ◽  
Dye Release ◽  
Squaraine Dye ◽  
Chitosan Films

Chitosan was used as a protective matrix for the photosensitive dye-squaraine (2,4-bis[4-(dimethylamino)phenyl]cyclobutane-1,3-diol). The physicochemical properties of the obtained systems, both in solution and in a solid-state, were investigated. However, it was found that diluted chitosan solutions with a few percent additions of dye show an intense fluorescence, which is suppressed in the solid-state. This is related to the morphology of the heterogeneous modified chitosan films. The important advantage of using a biopolymer matrix is the prevention of dye degradation under the influence of high energy ultraviolet (UV) radiation while the dye presence improves the chitosan heat resistance. It is caused by mutual interactions between macromolecules and dye. Owing to the protective action of chitosan, the dye release in liquid medium is limited. Chitosan solutions with a few percent additions of squaraine can be used in biomedical imaging thanks to the ability to emit light, while chitosan films can be protective coatings resistant to high temperatures and UV radiation.

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