PROBLEM TO BE SOLVED: To provide a shelf-stable-type lactic food which does not undergo brownish discoloration even after storage at ambient temperature for a long period, and a process for producing the lactic food.SOLUTION: A brownish-discoloration-prevented lactic food is produced by homogenizing a lactic composition that comprises a milk protein, a sugar and an emulsifying agent and therefore can become an oil-in-water-type emulsion, and is characterized in that the oil-in-water-type emulsion after homogenization has a 50% particle diameter of 0.2-1.0 μm.SELECTED DRAWING: NoneCOPYRIGHT: (C)2019,JPO&INPIT【課題】常温保存タイプの乳性食品であって、常温、長期保存後であっても褐色変化が生じない乳性食品及びその製造方法を提供する。【解決手段】乳タンパク質、糖質、乳化剤を含む水中油型乳化物となる乳性組成物を均質化処理し、均質化処理後の該水中油型乳化物の50%粒子径が0.2~1.0μmであることを特徴とする、褐変抑制乳性食品である。【選択図】なし