To provide compositions used for angiotensin I converting enzyme (ACE) inhibition, suppression of blood pressure elevation, or blood pressure decrease, and to provide methods for producing the same.SOLUTION: Provided is a composition for ACE inhibition, suppression of blood pressure elevation, or blood pressure decrease, in which the content of one or more dipeptide compounds selected from arginyl glutamine, glutaminyl arginine, arginyl asparagine, asparaginyl arginine, and salts thereof is 0.10 mg/L or more. The composition for ACE inhibition, suppression of blood pressure elevation, or blood pressure decrease contains a water-soluble component derived from the Euglena cells in which lipid is removed and the dipeptide compound. The composition for ACE inhibition, suppression of blood pressure elevation, or blood pressure decrease contains Euglena cells grown in a medium having a glutamic acid content of 3.4 mmol/L or more and an ammonia nitrogen content of 13 mmol/L or more and dried, or a disrupted product thereof, or the water-soluble component.SELECTED DRAWING: Figure 7【課題】アンジオテンシンI変換酵素（ＡＣＥ）阻害、血圧上昇抑制、又は血圧降下に用いられる組成物、及びその製造方法の提供。【解決手段】アルギニルグルタミン、グルタミニルアルギニン、アルギニルアスパラギン、アスパラギニルアルギニン、及びこれらの塩から選ばれた１種以上のジペプチド化合物の含有量が０．１０ｍｇ／Ｌ以上である、ＡＣＥ阻害用、血圧上昇抑制用、又は血圧降下用の組成物。ユーグレナ細胞から脂質を除去され前記細胞由来の水溶性成分を含んで前記ジペプチド化合物を含有する、ＡＣＥ阻害用、血圧上昇抑制用、又は血圧降下用の組成物。グルタミン酸の含有量が３．４ｍｍｏｌ／Ｌ以上かつアンモニア態窒素の含有量が１３ｍｍｏｌ／Ｌ以上である培地で生育して乾燥させられたユーグレナ細胞、又はその破砕処理物、もしくは前記水溶性成分を含む、ＡＣＥ阻害用、血圧上昇抑制用、又は血圧降下用の組成物。【選択図】図７
