The present invention relates to a lactic acid-fermented egg having reduced egg protein antigenicity and improved organoleptic quality through the addition of sodium citrate, heating treatment, and lactic acid bacteria fermentation, and more specifically, to a lactic acid-fermented egg having reduced egg protein antigenicity, which comprises a series of steps of adding to whole egg liquid a fixed amount of filtered water, sugar, and sodium citrate, heating treating and lactic acid-fermenting same, and a method for preparing same. The present invention reduces the antigenicity of ovomucoid and ovalbumin, which are allergy inducing factors existing inside an egg, has excellent solubility, and excellent organoleptic quality.
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