结果沙枣鞣质的平均含量为7.73%。

Results The average content of tannin was 7.73%.

用均匀设计法考察超声频率、超声时间和溶剂用量对沙枣油提取率的影响，得到提取沙枣油的优化超声工艺条件。

The influences of ultrasonic frequency, ultrasonic time and solvent content on the extraction rate of fat oil in Elaeagnus angus-tifolia L. were studied. The optimum extraction condition was obtained.

方法运用超声技术提取沙枣中的鞣质，用络合滴定法测定其含量。

Methods tannin was extracted by the ultrasonic technology and content of tannin was determined by the method of complex titration.