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蛋白质与核酸如何鉴别
更新时间: 2020-07-13 00:00:00  

鉴别方法:蛋白质在双缩脲试剂作用下会形成紫红色络合物,而核酸没有反应。

双缩脲试剂:由氢氧化钠溶液每毫升0.1克和硫酸铜溶液每毫升0.01克配制而成,配制比例为5:1,但是双缩脲试剂不用现配现用,这是与斐林试剂不同的地方之一。蛋白质在双缩脲试剂作用下会形成紫红色络合物,而核酸没有反应。

关键词: 蛋白质 核酸 如何 鉴别

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