Polyphenol oxidase (PPO) is a ubiquitous copper metalloprotein in the plastids of many plant species, fungi and insects.
多酚氧化酶是一类普遍存在于植物、真菌、昆虫的质体中，由核基因编码能与铜相结合的金属蛋白酶。
The activity of polyphenol oxidase (PPO) inlactuca sativa var. angustata was analyzed using heat treatment method to control its enzymatic browning.
研究了热处理法钝化苔干多酚氧化酶（PPO）活性，从而控制酶促褐变的工艺条件及效果。
Taking burgeon and stem of Parakmeria omeiensis Cheng as test materials, polyphenol oxidase(PPO), total phenol content, and seasonal change law were studied.
以峨眉拟单性木兰嫩枝茎段为测试材料，研究多酚氧化酶（PPO）活性和总酚含量及其季节变化规律。
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