Absorbed by Amberlite XAD-2 resin. Elute with ether and pentane mixture (1:1) and methanol, the bound and free aroma can isolated efficiently.

• Amberlite XAD-2树脂吸附，结合乙醚戊烷混合液(1:1，V/V)、甲醇的依次洗脱，可以将苹果汁(皮)中的游离态与键合态芳香组分进行有效分离。