Abstract
ABSTRACTThe effect of frozen storage time on apparent viscosity of yolk, emulsification capacity, and functionality of salted egg yolk in mayonnaise was studied.Apparent viscosity of yolk increased considerably after only 24 h of frozen stage. Apparent viscosity of yolk stored 30 days was approximately three times greater than that stored 24 h. Yolk stored 90 days had the highest apparent viscosity.Storage of yolk for even 24 h resulted in a reduction in emulsification capacity. Yolk stored 30 days had the lowest emulsification capacity at 5.92. Yolk stored 60 days had an emulsification capacity of 6.10, and that stored 90 days had an emulsification capacity of 6.06.Mayonnaise made from yolk stored 60 days had the highest apparent viscosity and the lowest spread. There was no significant (P > 0.05) difference in apparent viscosity and spread of mayonnaise made from yolk stored 0, 30, or 90 days.Mayonnaise made from yolk stored 24 h had a mean stability of 22 days. Subsequent frozen storage of yolk for 30, 60, and 90 days produced mayonnaise with mean stabilities of 21, 20, and 21 days, respectively.
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