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.

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。

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The extraction process of hogwash fat was simulated to produce hogwash fat by mixing edible oil and sewage and taking the supernatant oil.

本文将不同浓度的污水与食用油搅拌混合，经静置后取其上层油层来人工模拟劣质泔水油。

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