China is the top of apple juice concentrate(AJC) producer and exporter, but the browning, haze and patulin become the crucial technical problems in the AJC processing.

• 我国是世界最大的浓缩苹果汁生产国和出口国，目前面临的关键问题之一是不能有效控制浓缩苹果汁褐变、后混浊以及棒曲霉素超标。