scholarly journals 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

Molecules ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 778 ◽  
Author(s):  
Qing Liang ◽  
Jinsong Zhang ◽  
Xingguang Su ◽  
Qingwei Meng ◽  
Jianpeng Dou
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Panax Ginseng ◽  
Flower Buds ◽  
Aqueous Biphasic System ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction ◽  
Extraction Parameters ◽  
Aqueous Biphasic

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.

scholarly journals Ultrasonic-Assisted Extraction of Procyanidins Using Ionic Liquid Solution fromLarix gmeliniiBark

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Xiaowei Sun ◽  
Zhimin Jin ◽  
Lei Yang ◽  
Jingwei Hao ◽  
Yuangang Zu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Extraction Efficiency ◽  
Liquid Solution ◽  
Extraction Process ◽  
Ultrasonic Power ◽  
Assisted Extraction ◽  
Ultrasonic Time ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction

An ionic liquid-based ultrasonic-assisted extraction method has been developed for the effective extraction of procyanidins fromLarix gmeliniibark. So as to evaluate the performance of ionic liquids in ultrasonic-assisted extraction process, the effects caused by changes in the anion and the alkyl chain length of the cation on the extraction efficiency were investigated in this paper. The results indicated that the characteristics of anions had remarkable effects on the extraction efficiency of procyanidins, and 1-butyl-3-methylimidazolium bromide ([Bmim]Br) aqueous solution was the best among the investigated ionic liquids. The optimum conditions for the extraction were as follows: [Bmim]Br concentration 1.25 M, soak time 3 h, solid-liquid ratio 1 : 10, ultrasonic power 150 W, and ultrasonic time 30 min. This work not only introduces a simple, green, and highly efficient sample preparation method for extraction of procyanidins fromL. gmeliniibark, but also reveals the tremendous application potential of ionic liquids.

scholarly journals Application of Ionic Liquid-Based Ultrasonic-Assisted Extraction of Flavonoids from Bamboo Leaves

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2309 ◽  
Author(s):  
Liling Wang ◽  
Minge Bai ◽  
Yuchuan Qin ◽  
Bentong Liu ◽  
Yanbin Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Large Scale ◽  
Ultrasonic Power ◽  
Solid Ratio ◽  
Bamboo Leaves ◽  
Assisted Extraction ◽  
Ultrasonic Time ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction

Ionic liquids (ILs), known as environmentally benign “green” solvents, were developed as an optimal solvent for the green extraction and separation field. In this paper, an ionic liquid-based ultrasonic-assisted extraction (IL-UAE) of flavonoids (FVs) from bamboo leaves of Phyllostachys heterocycla was developed for the first time. First, 1-butyl-3-methylimidazolium bromide ([Bmim] Br), with the best extraction efficiency, was selected from fifteen ionic liquids with diverse structure, like carbon chains or anions. Then, the influencing parameters of ionic liquid (IL) concentration, liquid-solid ratio, ultrasonic time, and ultrasonic power, were investigated by single factor tests, and further optimized using response surface methodology (RSM). In the optimization experiment, the best conditions were 1.5 mol/L [BMIM]Br aqueous solution, liquid-solid ratio 41 mL/g, ultrasonic time 90 min, and ultrasonic power 300 W. Furthermore, the microstructures of bamboo leaves and the recovery of FVs and [BMIM]Br were also studied. Therefore, this simple, green and effective IL-UAE method has potentiality for the extraction of FVs from bamboo leaves for the large-scale operations.

Ionic liquid-based ultrasonic-assisted extraction of piperine from white pepper

2009 ◽  
Vol 640 (1-2) ◽  
pp. 47-51 ◽  
Author(s):  
Xiaoji Cao ◽  
Xuemin Ye ◽  
Yanbin Lu ◽  
Yi Yu ◽  
Weimin Mo
Keyword(s):  
Ionic Liquid ◽  
White Pepper ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction

Ionic liquid based ultrasonic-assisted extraction of forskolin from Coleus forskohlii roots

2014 ◽  
Vol 61 ◽  
pp. 258-264 ◽  
Author(s):  
Shirish M. Harde ◽  
Sachin L. Lonkar ◽  
Mariam S. Degani ◽  
Rekha S. Singhal
Keyword(s):  
Ionic Liquid ◽  
Coleus Forskohlii ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction
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