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Effects of vacuum packing on eggshell microbial activity and egg quality in table eggs under different storage temperatures
Author(s) -
Aygun Ali,
Sert Durmus
Publication year - 2013
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.5936
Subject(s) - yolk , haugh unit , specific gravity , eggshell , food science , extender , vacuum packing , mesophile , egg albumen , biology , chemistry , zoology , shelf life , bacteria , body weight , mineralogy , ecology , feed conversion ratio , genetics , organic chemistry , polyurethane , endocrinology
Abstract Backround The aim of this study was to establish the effects of vacuum packing on eggshell microbial activity and egg quality traits in table eggs during 42 days of storage at 5 and 22 °C. Treatments were no vacuum packing (control) and vacuum packing ( VP ). Egg quality traits measured included egg weight loss, specific gravity, shell strength, albumen height, Haugh unit, yolk index, albumen pH , yolk pH , albumen colour and yolk colour . Results VP eggs maintained higher specific gravity, albumen height, Haugh unit and yolk index and lower egg weight loss, albumen pH and yolk pH compared with control eggs after 42 days at 22 °C. VP eggs had lower levels of total aerobic mesophilic bacteria, Salmonella spp., Staphylococcus spp. and moulds/yeasts than control eggs over the storage period at both 5 and 22 °C. However, VP eggs had a higher level of coliforms than control eggs after 42 days at 5 °C . Conclusion The results indicated that vacuum packing extended the egg shelf life to at least 42 days compared with control eggs at 5 and 22 °C .