Effect of polyethylene glycol coating on Salmonella enteritidis in artificially contaminated eggs
CYTA - Journal of Food, vol.10, no.4, pp.268-274, 2012 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 10 Issue: 4
- Publication Date: 2012
- Doi Number: 10.1080/19476337.2011.653692
- Journal Name: CYTA - Journal of Food
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.268-274
- Keywords: hens' eggs, Salmonella enteritidis, polyethylene glycol, film thickness, microbial growth, transovarian, VACCINE STRAINS, CHICKENS, ENTERICA, SEROVARS, GROWTH, TYPHIMURIUM, PREVALENCE, CHALLENGE, HENS
- Bursa Uludag University Affiliated: Yes
Abstract
This experimental infection study focuses on a specific Salmonella micro-organism commonly found inside hens' eggs. It outlines the application of polyethylene glycol-based films on hens' eggs and microbial growth introduced via transovarian contamination. Three molecular weights of polyethylene glycol (PEG) were studied: ranging from 1000 g/mol to 3000 g/mol. PEG coating ratios averaged a PEG film thickness of 0.014+0.006 mm and average eggshell thickness was 0.32+0.022 mm. The effects of molecular weight of PEG coating and storage time on the growth of Salmonella enteritidis of PEG-coated eggs were evaluated during 30 days of incubation in 378C storage. The initial concentration of 8 log10 CFU/mL was achieved by inoculation. The lowest level of S. enteritidis at the end of 30-day incubation period was 5.07+0.03 log10 CFU/mL, giving an inhibition efficiency of 33.83%. This level was achieved with a PEG coating of 1.0449+0.005 density and 0.02+0.01film thickness. © 2012 Taylor & Francis.