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Sanitizing activity of silver nanoparticles synthesized with natural products on dairy industry surfaces.

Authors :
Marinete de Sousa, Maura
Lima Guimarães, Milena
Ereno Tadielo, Leonardo
Campos Nascimento, Bruna Walleska
Sales Rosa, Danillo
Pequeno de Oliveira, Helinando
dos Santos Bersot, Luciano
de Moraes Peixoto, Rodolfo
Matiuzzi da Costa, Mateus
Source :
Ciência Rural. 2024, Vol. 54 Issue 4, p1-7. 7p.
Publication Year :
2024

Abstract

Surface contamination by pathogenic and deteriorating microorganisms is a constant concern in the food industry. Therefore, in this study we evaluated the antimicrobial activity of silver nanoparticles (AgNPs), produced using the essential oil of Lippia origanoides Kunth and ethanolic extract of Hymenaea martiana Hayne, against bacteria used in milk processing. For this, AgNPs were synthesized and their antimicrobial activity was evaluated for minimum inhibitory and bactericidal concentrations, time-kill, interference on the biofilm, and application on the surfaces of different materials. AgNPs showed bacteriostatic and bactericidal activity against Staphylococcus aureus (ATCC 25923), Staphylococcus aureus (ATCC 33591), Escherichia coli (ATCC 25922), Salmonella enterica subsp. enterica serovar Choleraesuis (ATCC 10708), Listeria monocytogenes, Escherichia coli, Salmonella spp.,andPseudomonas aeruginosa,and interfered with biofilm formation more than with consolidated biofilms. A 1hour period was sufficient to reduce the bacterial cells, whereas a Minimum Duration for Killing (MDK) of 99% was reached after approximately 30 min. AgNPs were effective against bacteria attached to stainless steel and polyethylene, but ineffective on tile surfaces. Thus, owing to the growing microbial resistance and the need to develop new products based on the concepts of green chemistry, these AgNPs are presented as a new possibility for cleaning processes in the food industry [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
01038478
Volume :
54
Issue :
4
Database :
Academic Search Index
Journal :
Ciência Rural
Publication Type :
Academic Journal
Accession number :
173245489
Full Text :
https://doi.org/10.1590/0103-8478cr20230027