Comparison of the some physical, chemical and microbiological quality properties of the coated eggs with resins of the different trees

The aim of this research was to provide safe and long shelf life egg product and reduce the microbiological contamination by coating eggs with resins of the diffrent trees. First of all, the eggs were washed with tap water at 15 °C. Then eggs surfaces were coated with resins which were collected from the surface of different tree (almond, apricot and cherrier). Finally the eggs were stored for 6 mounths and changes in the quality characteristics were observed. During storage 0., 7., 14., 28., 40., 60., 90., 120., 150. and 180. day the samples were analyzed physically, for their weight loss, air gap, haugh unit, albumin and yolk index, shape index, shell thickness the pH of albumin yolk, microbiologicaly in terms of Salmonella, total aerobic mesophilic bacteria, total aerobic psychrophylic bacteria, yeast and mold, total coliform bacteria, total Enterobacteriaceae, Staphylococcus aureus, Pseudomonas spp. According to the physical analysis which were made during the storage, losses and reductions were lesser in the coated samples than the uncouted samples. After chemical analysis; it is determined that the pH increases in the coated samples with different tree resins were lesser than the other samples. After microbiological analysis; highest microbiological growth was determined in the washed eggs samples. It was determined that unwashed and stored at 22 °C and 4°C samples were deteriorated at 40 and 60 day of the storage respectively. Similarly, control samples stored at 22 °C and 4 °C were deteriorated at 60 and 90 day of the storage respectively. Among the coated eggs, coated eggs with apricot resins stored at 22 °C were deteriorated at 120 day of the storage. But any microbiological growth observed in the other coated samples. As a result of this study, it is determined that, the shelf life of the coated eggs with different tree resins (almond, apricot, cherry) was extended until 180 days. Also it was determined that coating with resins decreases the number of microorganisims which penetrate through shell pores and the internal environment of the eggs, increases the resistance of the eggs and provides the eggs to stay fresh longer.