Bacterial contamination of chicken food egg with automated and manual sorting and packaging

Abstract

Chicken eggs are a staple food for humans and are consumed all over the world. Chicken eggs have a leading position among food products in terms of nutritional value and taste. During storage, under the influence of air oxygen and microorganisms, eggs deteriorate, contamination of opportunistic and pathogenic microflora increases. Purpose: analysis of the results of bacteriological studies of eggs of various producers during automatic and manual sorting and packaging from the trading network in Sumy and the Sumy region in accordance with DSTU 5028:2008 “Edible hen eggs. Specifications” and Microbiological Criteria for Establishing Food Safety Indicators. Materials and methods. Bacteriological studies of shell washings and egg contents were carried out according to standard methods. Samples of edible chicken eggs with automatic and manual sorting and packaging corresponded to DSTU 5028:2008, Microbiological criteria for establishing food safety indicators and BIE No. 5061-89. Pathogenic and opportunistic pathogens of bacterial diseases were not isolated from the surface of eggs of the control group during automated sorting and packing, spore bacteria of the genus Bacillus (Bacillus subtilis) were isolated. In washes from the egg shell surface with manual sorting and packaging, Streptococcus spp was found – 12 % of the number of samples examined, E. faecalis – 34 %, P. aeruginosa – 11 %, and spore bacteria of the genus Bacillus (B. subtilis) – 43 %. The number of QMA&OAMO and CGB (coli-forms) in both groups corresponded to the established norms, but the QMA&OAMO indicator in the products of enterprises with manual collection and packaging was 34 % higher compared to eggs from enterprises with automated sorting and packaging. Automation of the process of sorting and packing eggs provides the best microbiological indicators of the safety of edible hen eggs in comparison with those when using manual labor during sorting and packing. A complete transition to the automation of production processes for the production of edible eggs in Ukraine is required.