【摘要】 建立了应用毛细管胶束电动色谱 (MECC)灵敏、快速的测定血管紧张素转化酶 (ACE)活性的方法。通过对电压、上样时间、电极缓冲液体系等影响因素的优化 ,探讨了方法的可行性 ,确立了最佳测定条件 (电压 :8 1kV ;上样时间 :1s;电极缓冲液 :2 0mmol/L硼酸盐缓冲液 (pH 9 0 ,含 5 0mmol/LSDS) ;检测波长 :2 2 8nm)。方法的最低ACE活性检测限为 5pmol/min(以 2倍的信噪比计 )。更多还原

【Abstract】 A sensitive and rapid method was developed for angiotensin converting enzyme (ACE) activity determination by micellar electrokinetic capillary chromatography (MECC) MECC was carried out to separate and quantify the products of the enzymatic reaction using Hip Leu His as the substrate in 20 mmol/L boric acid borate buffer (pH 9 0) including 50 mmol/L SDS as the run buffer at an applied voltage of 8 1 kV The electrophoresis was monitored at 228 nm, and completed in 6 minutes The detection limits of ACE activity was 5 pmol/min(signal to noise ratio was 2).更多还原