In this thesis the structure of polyphenol oxidase(PPO), its mechanism of catalytic reaction, and the physical, chemical and biological methods to inhibit enzymatic browning were summarized.

• 摘要从多酚氧化酶的结构及其催化反应机制出发，综述了抑制酶促褐变的物理、化学和生物学方法及其研究进展。