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Egg is an important foods containing many good proteins. But it is well known that egg protein has a lot of allergenicity. The purpose of this study is to develop the methods to reduce the allergenicity of egg. I tried various experimental methods ; For example, heat treatment, irradiation with ultr...

Egg is an important foods containing many good proteins. But it is well known that egg protein has a lot of allergenicity. The purpose of this study is to develop the methods to reduce the allergenicity of egg. I tried various experimental methods ; For example, heat treatment, irradiation with ultraviolet and microwaves, treatment with polyphosphate, enzyme hydrolysis and PCA inhibition test using guinea pigs and degrees of hydrolysis. The results obtained were as follows ; 1. Heat treatment reduced allergenicity of egg protein. The longer the heat time, the better the effect. 2. Irradiating with ultraviolet and microwave increased both the degree of protein hydrolysis and PCA inhibition reduced the allergenicity. Ultraviolet was more effective than microwaves on egg protein. Fertilized eggs did not reduce allergenicity. 3. Enzyme treatment increased the degree of hydrolysis and PCA inhibition, and reduced allergenicity considerably. Alcalase was more effective than neutrase. 4. Adding polyphosphate did not induced protein hydrolysis, but increased PCA inhibition and reduced allergenicity. 5. The picture of various treatments of egg gel by SEM showed a light surface which indicated that protein was desolved. Neutrase was lighter than alcalase, and the longer the heating time, the lighter the surface became. 6. Measurements of the hardness of egg gel by Instron showed that the longer the reaction time with enzyme, the softer it became.

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