Enzymic hydrolysates of red tilapia skin collagen have high ACE inhibitory peptide which is separated with ultrafiltration,gel chromatography and hypertensive liquid chromatography.

• 红非鲫鱼皮胶原蛋白的复合酶水解产物中存在较高活性的血管紧张素抑制肽,该肽富含疏水氨基酸和芳香族氨基酸,可以通过超滤、柱层析、液相色谱法从水解产物中分离。