in Fig. 2 the microphotographs of snacks are shown. Regarding the control snack (without egg derivatives) SEM observation revealed that the microstructure was quite homo- geneous, although particle agglomerates can be observed. In t that, this context, it is important to remark that the synergistic interaction of carrageenan with locust bean gum is determined by the mixture ratio of both hydrocolloids (Santacruz et al. ontent. 2002), in this case the ratio was 3:1. Thus, when the egg yolk the derivatives are added to the formulation, then the interaction on between all the compounds generates a new microstructure. In fact, the firmer structure of snacks developed with egg yolk and its fractions is probably originated by this interaction. Granule snacks exhibited a coarse very homogeneous structure, whereas in yolk and plasma snacks the microstruc- product. ture was more heterogeneous with the surface covered by small aggregates that are possible originated by fat accumulation.