This invention becomes, including with the protein and the lipid and the sugar, at the same time, the heat quantity of the composition is above 1kcal/ml, being the liquefied nutrition composition, protein density in the composition is 30 - 100mg/ml, at the same time, sodium density of the composition it regards the liquefied nutrition composition which features that it is higher than 2mg/ml. Satisfactory thermal stability and physical properties can be maintained according to this invention, even in a state where the protein and the sodium coexist at high density without gelation and cohesion etc happening. Therefore, according to this invention, it is possible to offer the liquefied nutrition food of the high protein which possesses satisfactory thermal stability and physical properties, includes the sodium at high density.本発明は、タンパク質と、脂質と、糖質とを含んでなり、かつ、組成物の熱量が1kcal/ml以上である、液状栄養組成物であって、組成物中のタンパク質濃度が30~100mg/mlであり、かつ、組成物のナトリウム濃度が2mg/mlよりも高いことを特徴とする液状栄養組成物に関する。本発明によれば、タンパク質とナトリウムが高濃度で共存する状態でもゲル化や凝集などが起こることなく、良好な熱安定性や物性を維持できる。したがって、本発明によれば、良好な熱安定性や物性を有する、ナトリウムを高濃度で含む高タンパクの液状栄養食品を提供することができる。
