期刊
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
卷 97, 期 -, 页码 66-74出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cep.2015.08.013
关键词
Microwave-assisted extraction (MAE); Kinetics; Polyphenols; Clinacanthus nutans Lindau (C. nutans); Specific energy absorbed
资金
- Ministry of Education (MOE), Malaysia
- Universiti Teknologi MARA (UiTM)
- Spanish Ministry of Economy and Competitiveness
- Junta de Castilla y Leon (Spain) [VA330U13]
Clinacanthus nutans Lindau (C. nutans, snake grass) is a well-known medicinal plant in South-East Asia that recently has attracted attention for its high polyphenol content and its medical and nutraceutical applications. In this work, polyphenols have been recovered from C nutans by microwave-assisted extraction (MAE). The influence of the main process parameters has been analyzed: ethanol concentration in the extraction solvent mixture, microwave energy applied and solvent-to-feed ratio. Model results have been correlated with mathematical models of the extraction process, that allow linking the observed variations in extraction curves with modifications of mass transfer and equilibrium parameters. Moreover, in order to assess the energy efficiency of the process, results were studied and explained in view of the specific energy absorbed during the microwave treatment (J/g). Results indicate that microwave pre-treatment improves extraction rate by a factor of 2-5, yielding the best results when a water-ethanol solvent mixture with 50%vol of ethanol is used at a solvent-to-feed ratio (S/F) of 14 mL/g. (C) 2015 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据