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Sanitation of chicken eggs by ionizing radiation: HACCP and inactivation studies

Abstract

The aim of this study is to develop the application of irradiation technology to chicken eggs in order to get a product free of pathogenic microorganisms. Bioburden values of eggs from chickens of different ages (n=150) were found to not be significantly different (p<0.05) and an average value of (2.0{+-}0.3). 10{sup 5} cfu/egg was obtained for the shell. Two major microbial groups were characterized in the egg's natural microbiota, no Salmonella or Campylobacter were detected. HACCP studies indicated the feed as a critical point. Dosimetry studies were carried out in a {gamma} facility to find the best geometry and dose rate for irradiation. Whole eggs were artificially contaminated with reference strains of Salmonella typhimurium, Salmonella enteritidis, Campylobacter coli and Campylobacter jejuni and irradiated in the {gamma} facility at sub-lethal doses (0.2-1 kGy) with a dose rate of 1.0 kGy/h. D{sub value} varied between 0.31-0.26 kGy and 0.20-0.19 kGy in S. typhimurium and S. enteritidis, and between 0.21-0.18 kGy and 0.07-0.09 in C. coli and C. jejuni, for shell and yolk+white. Using sub-lethal doses up to 5 kGy, the D{sub value} of natural microbiota in whole eggs was 1.29 kGy. Results show that low irradiation doses could guarantee egg sanitation.
Publication Date:
Oct 01, 2004
Product Type:
Journal Article
Resource Relation:
Journal Name: Radiation Physics and Chemistry (1993); Journal Volume: 71; Journal Issue: 1-2; Conference: IMRP-2003: 13. international meeting on radiation processing, Chicago, IL (United States), 7-12 Sep 2003; Other Information: DOI: 10.1016/j.radphyschem.2004.03.064; PII: S0969806X04001495; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); PBD: Sep-Oct 2004
Subject:
60 APPLIED LIFE SCIENCES; CHICKENS; DOSE RATES; DOSIMETRY; EGGS; IONIZING RADIATIONS; IRRADIATION; LETHAL DOSES; SALMONELLA TYPHIMURIUM
OSTI ID:
20560342
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0969-806X; RPCHDM; TRN: GB05R0996014460
Submitting Site:
GBN
Size:
page(s) 29-33
Announcement Date:

Citation Formats

Verde, S C, Tenreiro, R, and Botelho, M L. Sanitation of chicken eggs by ionizing radiation: HACCP and inactivation studies. United Kingdom: N. p., 2004. Web. doi:10.1016/j.radphyschem.2004.03.064.
Verde, S C, Tenreiro, R, & Botelho, M L. Sanitation of chicken eggs by ionizing radiation: HACCP and inactivation studies. United Kingdom. doi:10.1016/j.radphyschem.2004.03.064.
Verde, S C, Tenreiro, R, and Botelho, M L. 2004. "Sanitation of chicken eggs by ionizing radiation: HACCP and inactivation studies." United Kingdom. doi:10.1016/j.radphyschem.2004.03.064. https://www.osti.gov/servlets/purl/10.1016/j.radphyschem.2004.03.064.
@misc{etde_20560342,
title = {Sanitation of chicken eggs by ionizing radiation: HACCP and inactivation studies}
author = {Verde, S C, Tenreiro, R, and Botelho, M L}
abstractNote = {The aim of this study is to develop the application of irradiation technology to chicken eggs in order to get a product free of pathogenic microorganisms. Bioburden values of eggs from chickens of different ages (n=150) were found to not be significantly different (p<0.05) and an average value of (2.0{+-}0.3). 10{sup 5} cfu/egg was obtained for the shell. Two major microbial groups were characterized in the egg's natural microbiota, no Salmonella or Campylobacter were detected. HACCP studies indicated the feed as a critical point. Dosimetry studies were carried out in a {gamma} facility to find the best geometry and dose rate for irradiation. Whole eggs were artificially contaminated with reference strains of Salmonella typhimurium, Salmonella enteritidis, Campylobacter coli and Campylobacter jejuni and irradiated in the {gamma} facility at sub-lethal doses (0.2-1 kGy) with a dose rate of 1.0 kGy/h. D{sub value} varied between 0.31-0.26 kGy and 0.20-0.19 kGy in S. typhimurium and S. enteritidis, and between 0.21-0.18 kGy and 0.07-0.09 in C. coli and C. jejuni, for shell and yolk+white. Using sub-lethal doses up to 5 kGy, the D{sub value} of natural microbiota in whole eggs was 1.29 kGy. Results show that low irradiation doses could guarantee egg sanitation.}
doi = {10.1016/j.radphyschem.2004.03.064}
journal = {Radiation Physics and Chemistry (1993)}
issue = {1-2}
volume = {71}
journal type = {AC}
place = {United Kingdom}
year = {2004}
month = {Oct}
}