The invention discloses a method for the preparation of polyphenols in the hops. The steps are as follows: after the sample is crushed, the sample is extracted with petroleum ether to the colorless solution, and the brewery residue after extraction is extracted by the volume fraction of the volume fraction of 65 alcohol and 75% ethanol for 4 times, 40 50min each time, the extract solution, and the extract extract to concentrate the extract. The extract was extracted with chloroform, ethyl acetate and n-butanol after the extract was dissolved in a proper amount of water. The extraction solution was separated by silica gel column chromatography, and the 18:1 elution part was collected by volume ratio of 95:1, 75:1, 55:1, 35:1, 18:1 and 5:1 with chloroform methanol, and the concentration was obtained. The preparation method is simple, and the obtained extract has anti-inflammatory, anti-oxidation and other effects, and can be used as an effective part of hops for drug preparation.
【技术实现步骤摘要】
一种啤酒花中多酚类提取物的制备方法
本专利技术具体涉及一种啤酒花中多酚类提取物的制备方法。
技术介绍
啤酒花(HumuluslupulusL.),别名忽布、蛇麻花等,是荨麻目大麻科葎草属多年生草本植物,雌雄异株;其化学成分主要有啤酒花树脂、黄酮、多酚、挥发油等。啤酒花味苦、性平,具有明显的药理活性、优异的抗氧化能力和防腐特性,有健胃、消食、利尿、安神、止咳化痰等功效。
技术实现思路
本专利技术的目的在于提供一种啤酒花中多酚类提取物的制备方法。本专利技术通过下面技术方案实现:一种啤酒花中多酚类提取物的制备方法,包括如下步骤:将啤酒花样品粉碎后以石油醚萃取至溶液无色,萃取后的啤酒花渣用体积分数65-75%乙醇超声提取2-4次,每次40-50min,合并提取液,提取液减压浓缩得到浸膏;将浸膏以适量水溶解后用氯仿、乙酸乙酯、正丁醇萃取,萃取液减压浓缩;取乙酸乙酯相经硅胶柱色谱分离,依次用体积比95:1、75:1、55:1、35:1、18:1、5:1的氯仿-甲醇洗脱,收集18:1洗脱部分,浓缩即得。优选地,所述的制备方法中,萃取后的啤酒花渣用体积分数70%乙醇超声提取3次。优选 ...
【技术保护点】
1.一种啤酒花中多酚类提取物的制备方法,其特征在于,包括如下步骤:将啤酒花样品粉碎后以石油醚萃取至溶液无色,萃取后的啤酒花渣用体积分数65‑75%乙醇超声提取2‑4次,每次40‑50min,合并提取液,提取液减压浓缩得到浸膏;将浸膏以适量水溶解后用氯仿、乙酸乙酯、正丁醇萃取,萃取液减压浓缩;取乙酸乙酯相经硅胶柱色谱分离,依次用体积比95:1、75:1、55:1、35:1、18:1、5:1的氯仿‑甲醇洗脱,收集18:1洗脱部分,浓缩即得。
【技术特征摘要】
1.一种啤酒花中多酚类提取物的制备方法,其特征在于,包括如下步骤:将啤酒花样品粉碎后以石油醚萃取至溶液无色,萃取后的啤酒花渣用体积分数65-75%乙醇超声提取2-4次,每次40-50min,合并提取液,提取液减压浓缩得到浸膏;将浸膏以适量水溶解后用氯仿、乙酸乙酯、正丁醇萃取,萃取液减压浓缩;取乙酸乙酯相经硅胶柱色谱分离,依次用体积比95:1、...
【专利技术属性】
技术研发人员:不公告发明人,
申请(专利权)人:启东祥瑞建设有限公司,
类型:发明
国别省市:江苏,32
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