...
首页> 外文期刊>Ultrasonics sonochemistry >Kinetics of ultrasonic extraction of extractive substances from garden (Salvia officinalis L.) and glutinous (Salvia glutinosa L.) sage
【24h】

Kinetics of ultrasonic extraction of extractive substances from garden (Salvia officinalis L.) and glutinous (Salvia glutinosa L.) sage

机译:超声波从花园鼠尾草和鼠尾草鼠尾草中提取物质的动力学

获取原文
获取原文并翻译 | 示例
           

摘要

The kinetics of ultrasonic extraction of extractive substances (ES) from dry herbs of garden (Salvia officinalis L.) and glutinous (Salvia glutinosa L.) sage using petroleum ether, 70% ethanol or water at 40 degrees C, as well as the composition of dry extracts, were studied. The mechanism of ultrasonic extraction is confirmed to occur in two steps: first, dissolution of the ES near the particle surface (washing) and, second, diffusion from the solid particles to the bulk of the liquid extract (slow extraction). The process is described mathematically using three concepts of the unsteady diffusion through plant material, the film theory and the empirical equation of Ponomaryov. The yield of ES increases with increasing solvent polarity, and nearly the maximum concentration of ES in liquid extracts is achieved for about 20 min. The composition of extracts depends on both the extraction conditions applied and the plant material. (c) 2005 Elsevier B.V. All rights reserved.
机译:使用石油醚,70%乙醇或40°C的水,在花园(Salvia officinalis L.)和糯(Salvia glutinosa L.)鼠尾草中提取提取物(ES)的超声动力学,并使用40°C干提取物的研究。超声提取的机理被确认为分两个步骤进行:第一,ES在颗粒表面附近的溶解(洗涤);第二,从固体颗粒扩散到大部分液体提取物(缓慢提取)。使用植物材料中的非稳态扩散,膜理论和Ponomaryov经验方程式三个概念对过程进行数学描述。 ES的产率随溶剂极性的增加而增加,并且在大约20分钟内几乎达到了液体提取物中ES的最大浓度。提取物的组成取决于所应用的提取条件和植物材料。 (c)2005 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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