大豆豆渣中大豆异黄酮的提取工艺研究

Research on Extraction of Soybean Isoflavones from Soybean Residue

以乙醇为溶剂,以大豆豆渣为原料,研究了大豆异黄酮的提取工艺。结果表明,乙醇浓度、温度、时间、料液比对大豆豆渣中大豆异黄酮的提取均产生不同程度的影响,其中乙醇浓度对大豆异黄酮提取量的影响最大,提取时间对大豆异黄酮提取量的影响最小。通过正交试验得出从大豆豆渣中提取大豆异黄酮的最佳工艺条件为乙醇浓度80%,温度70℃,时间3 h、料液比1∶12,在此条件下异黄酮的提取量为8.95 mg/10 g。

The optimum extraction conditions of isoflavones from soybean residue were researched by using orthogonal design. The optimum is the alcohol concentration 80 %, the temperature 70 ℃, the extraction time 3 hours and the ratio of material to solvent 1 ： 12,and the yield is 8.95 mg/10g under the optimum conditions. The primary factor of this extraction is the alcohol concentration,while the least one is the extraction time.