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正交实验表明：啤酒废酵母采用盐热法提取ＲＮＡ，可以得到较高的产品纯度与得率，而ＦＤＰ废酵母采用浸泡法并用碱调其ｐＨ值即可提取酵母ＲＮＡ。
Orthogonal experiments show that the waste yeast can extract the RNA by salt-heat method, which can obtain high purity and yield of the product. However, yeast waste RNA can be extracted from the waste yeast of FDP by the soaking method and alkaline pH value.