Etlik Veteriner Mikrobiyoloji Dergisi

Yazarlar: Tahsin Onur KEVENK, Ahmet KOLUMAN

Konular:Veteriner Hekimlik

DOI:10.35864/evmd.861846

Anahtar Kelimeler:Zinc oxide,Nanoparticles,Foodborne,Pathogens,Decontamination

Özet: Zinc oxide (ZnO) has been used for many years in the pharmaceutical, cosmetic, paint, textile, and food industries for coating surfaces, absorbing UV rays and due to its antimicrobial properties in nanoscale it has been identified as important chemical for decontamination. Zinc can be found in many foods as well and its allowed daily intake for adults has been reported as 8-11 mg. Zinc Oxide Nanoparticles (ZnO-NPs) are generally regarded as safe (GRAS) for it being stable under hard processing conditions. Compared to organic acids, ZnO-NPs have better durability, selectivity, and heat resistance. In the present study, it was aimed to understand the decontamination effect of ZnO-NPs on S. enteritidis, S. typhimurium, S. aureus, L. monocytogenes, and E. coli O157 to develop novel, safe decontamination agents for food industry. For this purpose, <50 µ ZnO-NPs were added into Tryptic Soy Broth in 20 mMolar final concentration for understanding of antimicrobial effect. After inoculation of the pathogens, counting procedure was performed using the Tryptic Soy Agar by the pour on plate method at 0, 1st, 2nd, 4th, 6th, 8th, 12th and 24th hours. As a result, S. enteritidis and S. aureus 3 Log CFU/mL, S. typhimurium and E. coli O157 4 Log CFU/mL, L. monocytogenes 2 Log CFU/mL decreased in 24 hours.

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