黄姜皂素清洁生产工艺研究

Research on Clean Production Process for Diosgenin

摘要:

以酒精为溶剂浸提黄姜干粉中的皂苷，采用水解、过滤、中和、干燥、石油醚抽提、结晶、重结晶得到纯度较高的薯蓣皂苷元。研究了间歇提取工艺中溶剂含量、料液比、提取温度、提取时间和次数等对皂素收率的影响：以体积含量95%的酒精为溶剂，料液比为5:1，提取温度为60℃，间歇提取3次，提取时间分别为2h、1h、0.5h时，皂素收率可达2.45%。在此基础上，为提高提取效率且便于连续化生产，也考察了连续均质提取的工艺过程，60MPa压力下连续均质提取可达到与间歇提取同等效果。间歇提取和连续均质提取工艺的耗酸和废水量较传统工艺大幅下降，皂素收率有所提高。

Abstract:

The dioscin was extracted from dry yam powder with alcohol in this experiment. After hydrolysis reaction, filtration, neutralization, dehydration, extraction using petroleum ether and recrystallization, high purity diosgenin was obtained. Results of intermittent extraction process show that after three times extraction for 2h-1h-0.5h, the yield of diosgenin can reach 2.45%, using the solvent of 95%(volume content) alcohol, at the liquid-solid ratio 5:1 and temperature 60℃. Continuous homogeneous extraction process was also researched to increase extraction efficiency and facilitate continuous production. The research shows that continuous homogeneous extraction at pressure 60MPa can achieve equal effect to intermittent extraction. Acid consumption and waste water of intermittent extraction and continuous homogeneous extraction decrease dramatically compared to the traditional process, and the yield of diosgenin increases.