blocking effective from
阻断有效
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The study shows that blocking oxygen is the effective method to control enzymatic browning. The results are summarized as follows:(1) PPO was extracted from Granny Smith with acetone.
主要研究结果如下：（1）采用丙酮粉沉淀抽滤法从澳洲青苹中提取多酚氧化酶。
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