①测定过程中所有样本均需置于冰上放置并尽快完成测定,以免变性和失活;
②准确在规定时间点完成吸光值测定,以确保检测结果的准确性和重复性;若样本较多可分批进行检测,以确保组间反应时间一致;
③若A1测定大于1.0或∆A测定大于0.25,建议将粗酶液使用蒸馏水适当稀释后再进行测定;若∆A测定小于0.01,建议适当延长酶促反应时间(室温准确反应60 s,可以延长至10 min以上)或制备更高浓度的样本后再进行测定,计算时相应修改;
④试剂一中含有约1 mg/mL的蛋白,测定样本蛋白含量后需减去试剂一自身的蛋白含量;
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