Ultrafiltration (UF) has hardly effect on AAN, however, other unit operations can reduce the content of ANN especially in concentration, adsorption and second pasteurization.

• 加工过程中除了超滤对氨基态氮(AAN)几乎没有影响外，其它单元操作都可降低果汁中AAN的含量，特别是吸附、浓缩和后巴氏杀菌对其均有明显的影响。