Bioactive Ag(I) coordination complexes as dopants for castor oil plasticized ethylcellulose films.

Autor: Scarpelli F; MAT-InLAB, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy. a.crispini@unical.it., Crispini A; MAT-InLAB, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy. a.crispini@unical.it., Aiello I; MAT-InLAB, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy. a.crispini@unical.it., Godbert N; MAT-InLAB, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy. a.crispini@unical.it., Marchetti F; School of Science and Technology, Chemistry Section, University of Camerino, Via S. Agostino 1, 62032 Camerino, MC, Italy. fabio.marchetti@unicam.it., Xhafa S; School of Science and Technology, Chemistry Section, University of Camerino, Via S. Agostino 1, 62032 Camerino, MC, Italy. fabio.marchetti@unicam.it., De Filpo G; NOPTEA, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy., Baratta M; NOPTEA, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy., Berardi R; TiFQLab - Centro di sperimentazione ricerca e analisi applicate alle tecnologie alimentari e dell'acqua potabile - Department DIMES, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy., Alfano P; TiFQLab - Centro di sperimentazione ricerca e analisi applicate alle tecnologie alimentari e dell'acqua potabile - Department DIMES, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy., Giorno E; MAT-InLAB, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy. a.crispini@unical.it.
Jazyk: angličtina
Zdroj: Dalton transactions (Cambridge, England : 2003) [Dalton Trans] 2024 Oct 01; Vol. 53 (38), pp. 15992-16004. Date of Electronic Publication: 2024 Oct 01.
DOI: 10.1039/d4dt02201g
Abstrakt: The effects exerted by new bioactive acylpyrazolonate Ag(I) derivatives of the general formula [Ag(QPy,CF3)(R-Im)] containing different substituents on the imidazole (R-Im) ancillary ligands and the natural plasticizer castor oil when both are added to the ethylcellulose (EC) biopolymer in the preparation of thin films as potential active food packaging materials are presented. The Ag(I) complexes [Ag(QPy,CF3)(Bn-Im)] and [Ag(QPy,CF3)(Bu-Im)], having benzyl and butyl substituents, whose single crystal molecular structures are reported, have proved to be highly compatible for efficient incorporation between the EC polymer and the hydrophobic plasticizer chains, giving rise, even at low concentrations, to homogeneous, robust and elastic films. The concomitant presence of these Ag(I) complexes and castor oil in the polymer EC matrix gives rise to thin films with improved antibacterial activity against Escherichia coli ( E. coli ) as a model of Gram-negative bacterial strains when compared to the non-plasticized ones, with very low Ag(I) migration in the three food simulants used (distilled water, ethanol 10% v/v and acetic acid 3% v/v) under two assay conditions (70 °C for 2 h and 40 °C for 10 days).
Databáze: MEDLINE