As shown in Table 3 , the ultrasonic temperature had the most positive effects on the extraction yield of phytosterols, then, solid–liquid ratio had slightly significant affected, and then was extraction time, at last was ultrasonic power.
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As shown in Table 3 , the ultrasonic temperature had the most positive effects on the extraction yield of phytosterols, then, solid–liquid ratio had slightly significant affected, and then was extraction time, at last was ultrasonic power.