PROBLEM TO BE SOLVED: To provide a method for manufacturing a powdery skim milk capable of bestowing, onto milk proteins within a composition, qualities analogous to those of pretreated proteins within cheese curds of the prior art.SOLUTION: The method for manufacturing a powdery milk composition comprises a step of manufacturing a pretreated milk by adding, to a milk composition, a sequestering agent targeting calcium and rennet and a step of forming a powdery milk from the pretreated milk. The method for manufacturing a powdery milk composition may alternatively comprise a step of bestowing a pH of approximately 5.5 or above onto a liquid milk composition by adding a buffer compound to the milk composition, a step of adding an oxidoreductase enzyme to the milk composition, a step of manufacturing a pretreated milk by adding, to the milk composition, a sequestering agent targeting calcium and rennet, and a step of forming a powdery milk from the pretreated milk.【課題】組成物中の乳タンパク質に、従来のチーズカード中の処理済みタンパク質により類似した品質を与える脱脂粉乳の製造方法を提供する。【解決手段】粉末乳組成物を製造する方法は、乳組成物にカルシウムに対する金属イオン封鎖剤およびレンネットを加えて、処理済み乳を製造する工程と、処理済み乳を粉乳に形成する工程とを含む。又は、粉末乳組成物を製造する方法は、液体乳組成物に緩衝剤化合物を加えて、乳組成物に約５．５以上のｐＨを与える工程と、乳組成物にオキシドレダクターゼ酵素を加える工程と、乳組成物にカルシウムに対する金属イオン封鎖剤およびレンネットを加えて、処理済み乳を製造する工程と、処理済み乳を粉乳に形成する工程とを含む。【選択図】図１
