This invention is used in order to offer the replenishment of daietari calcium, calcium it regards the beverage of the protein type which is strengthened. In order to achieve this purpose, this invention, calcium being the beverage of the protein type which is strengthened, calcium deals with the beverage which features that it is strengthened (lactic acid) with gluconic acid citric acid calcium. At the time of being related with this invention, the beverage of protein type, per 1 times being the optional beverage which includes the protein above 4g, it is defined as the optional beverage which includes the both of the milk and the bean milk. The beverage of this invention offers available calcium source biologically, displays the solubility which at the same time is superior, taste quality, it is something which does not exert adverse effect on texture, or protein stability. The other former calcium salt contrast, (lactic acid) as for gluconic acid citric acid calcium, it was discovered that protein denaturation is almost not caused. In addition, the beverage of the protein type where this invention is strengthened is suitable for use as a component in order to use in the optional product where the beverage of protein type is used, is not something which is limited in this, but the dry powdered milk is included, for example, the special modified milk powder, the hard cheese, katsutejichizu, huamazuchizu and the pot cheese, creamy soup, the source, you can list nutrition drink and shake such as food, pudding, yogurt, ice-cream, and the meal alternative beverage etc which are burnt.本発明は、ダイエタリー・カルシウムの補給を提供するために用いられる、カルシウム強化されたタンパク質系の飲料に関する。この目的を達成するために、本発明は、カルシウム強化されたタンパク質系の飲料であって、(乳酸)グルコン酸クエン酸カルシウムによってカルシウム強化されていることを特徴とする飲料を対象とする。本発明との関連において、タンパク質系の飲料とは、1回当たり4g以上のタンパク質を含む任意の飲料であって、牛乳並びに豆乳の両方を含む任意の飲料として定義される。本発明の飲料は、生物学的に利用可能なカルシウム源を提供し、かつ優れた溶解度を呈し、味質、テクスチャ、及びタンパク質安定性に悪影響を及ぼさないものである。他の従来のカルシウム塩とは対照的に、(乳酸)グルコン酸クエン酸カルシウムは、タンパク質変性をほとんど起こさないことが発見された。加えて、本発明の強化されたタンパク質系の飲料
