The rough extract of Pinggu mushroom PPO was obtained by ammonium sulfate precipitation method.
采用硫酸铵沉淀法得到平菇多酚氧化酶粗提液。
Conclusion: Purified protein and its amino acids were obtained by defatted ammonium sulfate precipitation procedure, and the content of protein was acceptable. This method is easily and more feasible.
结论：采用脱脂硫酸铵沉降法提取所得总蛋白及其所含氨基酸含量较高、纯度较合理，方法较可行。
Conclusion: Purified protein and its amino acids were obtained by defatted ammonium sulfate precipitation procedure, and the content of protein was acceptable. This method is easily and more feasible.
结论：采用脱脂硫酸铵沉降法提取所得总蛋白及其所含氨基酸含量较高、纯度较合理，方法较可行。
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