dc.contributor.author | Elella, Mahmoud H. Abu | |
dc.contributor.author | Shalan, Ahmed Esmail | |
dc.contributor.author | Sabaa, Magdy W. | |
dc.contributor.author | Mohamed, Riham R. | |
dc.date.accessioned | 2022-01-25T08:49:55Z | |
dc.date.available | 2022-01-25T08:49:55Z | |
dc.date.issued | 2021-12-22 | |
dc.identifier.citation | RSC Advances 12(2) : 1095-1104 (2021) | es_ES |
dc.identifier.issn | 2046-2069 | |
dc.identifier.uri | http://hdl.handle.net/10810/55134 | |
dc.description.abstract | Food contamination by foodborne pathogens is considered a serious problem worldwide. This study aimed to show the efficacy of the one-pot green biosynthesis of nanocomposites as effective antimicrobial agents based on a water-soluble biodegradable polysaccharide and silver nitrate (AgNO3). Silver (Ag) nanoparticles were synthesized using different concentrations of AgNO3 solution (1, 2, and 3 mM) in the presence of N-quaternized chitosan and N,N,N-trimethyl chitosan chloride (TMC) as both a reducing and stabilizing agent. In addition, the structure of TMC/Ag nanocomposites was confirmed using different analytical tools including FTIR, UV-Vis, XRD, HR-TEM, FE-SEM, and EDX techniques. The FTIR spectra and UV-Vis spectra showed the main characteristic absorption peaks of Ag nanoparticles. In addition, FE-SEM images showed the formation of spherical bead-like particles on the surface of TMC. Correspondingly, the EDX spectrum showed a peak for silver, indicating the successful synthesis of Ag nanoparticles inside the TMC chains. Moreover, HR-TEM images exhibited the good distribution of Ag nanoparticles, which appeared as nano-spherical shapes. The antimicrobial activity of TMC/Ag nanocomposites was examined against three foodborne pathogens, including Salmonella Typhimurium as a Gram-negative bacterium, Bacillus subtilis as a Gram-positive bacterium and Aspergillus fumigatus as a fungus. The results showed that TMC/Ag nanocomposites had better antimicrobial activity compared with TMC alone and their antimicrobial activity increased with an increase in the concentration of Ag. The results confirmed that the TMC/Ag nanocomposites can be potentially used as an effective antimicrobial agent in food preservation. | es_ES |
dc.description.sponsorship | This work was supported by Cairo University-Faculty of Science fund 2020. Furthermore, AES thanks the National Research grants from MINECO, Spain, "Juan de la Cierva" [FJCI-2018-037717] and he is currently on leave from CMRDI. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Royal Society of Chemistry | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/FJCI-2018-037717 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | silver nanoparticles | es_ES |
dc.subject | antibacterial activity | es_ES |
dc.subject | cellulose hydrogel | es_ES |
dc.subject | silk fibroin | es_ES |
dc.subject | behavior | es_ES |
dc.subject | salt | es_ES |
dc.title | One-pot green synthesis of antimicrobial chitosan derivative nanocomposites to control foodborne pathogens | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | This is an Open Access Article. Published on 05 January 2022. Downloaded on 1/24/2022 12:04:00 PM.This article is licensed under aCreative Commons Attribution 3.0 Unported Licence. | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://pubs.rsc.org/en/content/articlelanding/2022/RA/D1RA07070C | es_ES |
dc.identifier.doi | 10.1039/d1ra07070c | |