• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Molecules >Extraction and Separation of Eight Ginsenosides from Flower Buds of Panax Ginseng Using Aqueous Ionic Liquid-Based Ultrasonic-Assisted Extraction Coupled with an Aqueous Biphasic System
【2h】

Extraction and Separation of Eight Ginsenosides from Flower Buds of Panax Ginseng Using Aqueous Ionic Liquid-Based Ultrasonic-Assisted Extraction Coupled with an Aqueous Biphasic System

机译：水离子液体超声辅助萃取-水相双相萃取人参花蕾中八种人参皂苷的分离

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Ionic liquids (ILs) are recognized as a possible replacement of traditional organic solvents, and ILs have been widely applied to extract various compounds. The present work aims to extract ginsenosides from Panax ginseng flower buds using aqueous ionic liquid based ultrasonic assisted extraction (IL-UAE). The extraction yields of 1-alkyl-3-methylimidazolium ionic liquids with different anions and alkyl chains were evaluated. The extraction parameters of eight ginsenosides were optimized by utilizing response surface methodology (RSM). The model demonstrated that a high yield of total ginsenosides could be obtained using IL-UAE, and the optimum extraction parameters were 0.23 M [C4mim][BF4], ultrasonic time of 23 min, temperature of extraction set to 30 °C, and liquid-solid ratio of 31:1. After that, an aqueous biphasic system (ABS) was used to separate ginsenosides further. The nature and concentration of salt, as well as the value of pH in ionic liquid were evaluated, and the optimal conditions (6.0 mL IL extract, 3 g NaH2PO4, and pH 5.0) were obtained. The preconcentration factor was 2.58, and extraction efficiency reached 64.53%. The results indicate that as a simple and efficient method, an IL-UAE-ABS can be considered as a promising method for extracting and separating the natural active compounds from medicinal herbs.
机译：离子液体（ILs）被认为可以替代传统的有机溶剂，并且ILs已被广泛应用于提取各种化合物。本工作旨在使用基于离子液体的超声辅助提取（IL-UAE）从人参花蕾中提取人参皂甙。评价了具有不同阴离子和烷基链的1-烷基-3-甲基咪唑鎓离子液体的提取率。利用响应面法（RSM）优化了八种人参皂苷的提取参数。该模型表明，使用IL-UAE可获得高产量的人参总皂苷，最佳提取参数为0.23 M [C4mim] [BF4]，超声时间为23分钟，提取温度设定为30°C和液体固比为31：1。之后，使用水性双相系统（ABS）进一步分离人参皂苷。评价了盐的性质和浓度以及离子液体中的pH值，并获得了最佳条件（6.0 mL IL提取液，3 g NaH2PO4和pH 5.0）。预浓缩系数为2.58，提取效率达到64.53％。结果表明，作为一种简单有效的方法，IL-UAE-ABS被认为是一种从草药中提取和分离天然活性化合物的有前途的方法。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号