PROBLEM TO BE SOLVED: To provide a milk protein beverage that contains a protein and HMB-Ca and in which a thick feeling or astringency in flavor is not felt even at high concentrations of protein, the unfavorable flavor of HMB-Ca is not felt, there is a moderate refreshment feeling, and the viscosity is not high.SOLUTION: In order to solve the problem, a milk protein beverage containing a denatured milk whey protein (A) whose permeability in 0.1 mass% aqueous suspension is 15% or less and a HMB-Ca (B), wherein the content of denatured milk whey protein (A) is 2 to 15 mass%, the content of HMB-Ca (B) is 0.1 to 1.5 mass%, and the pH is 3.2 to 5.5, is provided.SELECTED DRAWING: NoneCOPYRIGHT: (C)2020,JPO&INPIT【課題】本発明の課題は、蛋白質およびＨＭＢ－Ｃａを含有し、蛋白質が高濃度でも風味に濃厚感や渋みを感じず、ＨＭＢ－Ｃａの好ましくない風味を感じず、適度な爽やかさがあり、粘度が高くない、乳蛋白質飲料を提供することである。【解決手段】上記課題を解決するために、０．１質量％水懸濁液中の透過率が１５％以下である変性乳ホエイ蛋白質（Ａ）およびＨＭＢ－Ｃａ（Ｂ）を含有する乳蛋白質飲料であって、変性乳ホエイ蛋白質（Ａ）の含有量が２～１５質量％、ＨＭＢ－Ｃａ（Ｂ）の含有量が０．１～１．５質量％、ｐＨが３．２～５．５である乳蛋白質飲料を提供する。【選択図】なし
