These results show that the physiological cause of the core Browning is due to the enzymic Browning reaction.

这些结果证明：引起黑心病的生理原因是由于酶促褐变反应。

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These results show that the physiological cause of the core Browning is due to the enzymic Browning reaction and the principal substate in the core is chlorogenic acid.

根据以上实验结果，我们认为多酚类化合物的酶促褐变是造成鸭梨黑心病的生理原因，绿原酸可能是主要的产物。

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