There was positive relationship between core browning index and polyphenol oxidase (r=0.8890), and negative relationship was observed between core browning index and phenolics(r=-0.8868).

• 果心褐变指数与果心组织的酚类物质含量呈显著负相关(r=-0.；8868)；与多酚氧化酶活性呈显著正相关(r=0