Abstract: This paper studied extraction technology of oil of Hippophae rhamnoides L. The main results are as follows: the effects of operating parameters such as granularity of seeds, extraction time and amount of extractant on the highest yield of rude oil from seeds of Hippophae rhamnoides linn (extraction efficiency) were further detected.The ruslt showed that the granularity of seeds and amount of extractant were the significant factors affecting the efficiency of oil of Hippophae rhamnoides linn extraction. While the extraction time had influence (not significant) on the extraction efficiency. When the optimum extraction technique condi- tions was obtained as follows: extraction time was 6 hours, granularity of seeds was 40 mesh, amount of extractant was 6 diameters. Thus it can provide some referable data for others ’study on extraction of oil of Hippophae rhamnoides L.

Key words:  , Hippoophae rhamnoides linn oil； extraction technique；