山药皮中皂甙的提取工艺优化研究

Study on extraction technology of sapogenins from Chinese yam skin

中文关键词:  山药皮  皂甙提取  超声波

英文关键词:Chinese yam skin  extraction of sapogenins  ultrasound

中文摘要:

      目的 提取、分离山药皮中皂甙成分。方法 以山药皮为原料, 结合单因素实验和正交实验, 以皂甙元提取率为评价指标, 确定超声波回流乙醇提取山药皮皂甙的最佳工艺参数条件。结果 温度70 ℃, 乙醇浓度85%, 时间6 h, 料液比1:20。在此条件下, 皂甙提取率可达到0.139%。结论 本实验采用超声波回流乙醇提取山药皮皂甙, 测定方法简便、快速, 稳定性及重现性好, 可实现资源利用最大化, 提高山药的经济价值。

英文摘要:

      Objective To extract and separate the saponins from Chinese yam skin. Methods Yam skin as raw materials combined with the single factor experiment and orthogonal experiment and optimum process parameters of saponins from yam skin were confirmed by the ultrasonic reflux ethanol extraction with tigogenin extraction yield as evaluation indicators. Results The experimental results showed that under the condition of the temperature of 70 ℃, 85% ethanol concentration, time of 6 h, and material liquid than 1:20, the saponins extraction rate could reach 0.139%. Conclusion In this study, yam skin saponin was extracted by ultrasonic reflux ethanol. It was simple, fast, and had a good stability and a good reproducibility to maximize the resource utilization and improve economic value of yam.