采用纤维蛋白平板法测定赤子受胜蚓的纤溶酶活性,酶溶解纤维蛋白板的溶圈面积为35.0±4.2mm~2。纤溶酶在温度50℃以下,pH值4.0-10.0的范围内酶活性比较稳定。其最适温度为57°-59℃,最适pH值为8.0。也就是说纤溶酶在偏碱的条件下,活性最强。因此,纤溶酶制剂宜采用肠溶衣饭后半小时服用为佳。 The fibrin plate method was used to determine the plasmin activity of the scorpion fish. The area of ​​the lysis circle of the enzyme-dissolved fibrin plate was 35.0±4.2 mm~2. The plasmin activity is relatively stable at temperatures below 50°C and pH values ​​from 4.0 to 10.0. The optimum temperature is 57°-59°C and the optimum pH is 8.0. That is, plasmin under the conditions of partial alkali, the most active. Therefore, plasmin preparations should preferably be enteric-coated for half an hour after meals.