PROBLEM TO BE SOLVED: To provide a technology for inhibiting bitter taste of an oral ingestion composition such as food and drink or an oral medication containing blanched L-amino acid (BCAA) selected from L-valine, L-leucine and L-isoleucine.SOLUTION: There are provided an oral ingestion composition to which BCAA is blended or an oral ingestion composition such as food and drink or an oral medication having inhibited bitter taste by adding γ-glutamyl peptide which is one or more selected from γ-Glu-X-Gly, where X represents amino acid or an amino acid derivative, and γ-Glu-Y, where Y represents amino acid or an amino acid derivative to a raw material thereof.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】L-バリン、L-ロイシン、およびL-イソロイシンから選択される、分岐鎖L-アミノ酸(BCAA)を含有する飲食品や経口医薬品等の経口摂取組成物の、苦味を抑制する技術の提供。【解決手段】BCAAが配合された経口摂取組成物、またはその原料に、γ-Glu-X-Gly(Xはアミノ酸又はアミノ酸誘導体を表す)及びγ-Glu-Y(Yはアミノ酸又はアミノ酸誘導体を表す)から選択される1又はそれ以上であるγ-グルタミルペプチドを添加することにより、苦味が抑制された飲食品や経口医薬品等の経口摂取組成物。【選択図】なし