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以乙醇为溶剂浸提黄姜干粉中的皂苷,通过水解、过滤、中和、洗涤、干燥、石油醚抽提、结晶、重结晶得到纯度较高的黄姜皂素。研究了间歇浸提工艺中溶剂体积分数及其用量、浸提温度、浸提时间和次数等对皂素收率的影响:以50 g黄姜干粉为原料,以250 mL体积分数95%的乙醇为溶剂,浸提温度为60℃,间歇浸提3次,浸提时间为2 h/1 h/0.5 h时,皂素收率可达2.45%。在该基础上,为提高浸提效率且便于连续化生产,也考察了在高压均质机中连续均质浸提的工艺过程,操作压力60 MPa时连续均质浸提可达到与间歇浸提同等效果。间歇浸提和连续均质浸提工艺的耗酸量和废水量仅为传统工艺的10%,皂素收率较传统工艺的1.6%提高了53%。
Extracting the saponin from the dried ginger powder with ethanol as the solvent, obtaining the saponin with high purity through hydrolysis, filtration, neutralization, washing, drying, petroleum ether extraction, crystallization and recrystallization. The effects of volume fraction of solvent and its dosage, extraction temperature, extraction time and times on the yield of saponin were studied in batch extraction process. 50 g turmeric powder was used as raw material and 250 mL volume fraction of 95% ethanol was Solvent, extraction temperature 60 ℃, batch extraction 3 times, extraction time 2 h / 1 h / 0.5 h, saponin yield up to 2.45%. On this basis, in order to improve the leaching efficiency and facilitate the continuous production, the process of continuous and homogeneous leaching in the high pressure homogenizer was also investigated. When the operating pressure is 60 MPa, the continuous homogeneous leaching can be achieved with the intermittent leaching The same effect. The acid consumption and waste water volume of batch leaching and continuous homogeneous leaching process are only 10% of the traditional process, and the yield of saponin is increased by 53% compared with 1.6% of the traditional process.