by ammonium sulfate fractionation
This study produced by organizations broken up acetone powder, extract crude enzyme. by ammonium sulfate fractionation, dialysis demineralizing, cross-linked dextran G-75 gel chromatography to get pteridium aquilinum PPO pure enzyme.
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by ammonium sulfate fractionation
采用硫酸铵分馏法
以上为机器翻译结果，长、整句建议使用 人工翻译 。