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幼苗
共回答了23个问题采纳率:91.3% 举报
This test is of Gypenoside in extraction rate as the index, select the ethanol concentration, solid-liquid ratio, ultrasonic time and temperature, 4 factors as the single factor experiments, the single factor effect on the extraction rate of Gynostemma pentaphyllum saponins in the case. On the basis of the single factor experiment results, these 4 factors on extraction rate can be affected by. Based on the 4 single factors, using L9 (34) orthogonal experimental design to determine the optimum extraction process was as follows: ethanol concentration 60%, ratio of solid to liquid was 1:25 (g/ml), ultrasonic time 30min, ultrasonic temperature is 60 ℃, the best extraction conditions, the extraction rate of saponin in Gynostemma pentaphyllum reaches as high as 9.5%.
1年前
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