Methods:Oral liquid was made by steamdistillation, alcohol abstraction method, water abstraction and alcohol precipitation.
方法:分别采用水蒸气蒸馏法、醇提法、水提醇沉法制成口服液;
2
By microwave irradiation, the citral was obtained from Litea cubeba fruits, the yield was risen in average 36.5% than by traditional distillation in a current of steam.