Table of Contents Author Guidelines Submit a Manuscript
The Scientific World Journal
Volume 2013, Article ID 157527, 5 pages
Research Article

Ultrasound-Assisted Extraction of Total Phenolic Compounds from Inula helenium

1Department of Pharmacy, Hebei North University, Zhangjiakou, Hebei 075000, China
2Basic Medicine College, Hebei North University, Zhangjiakou, Hebei 075000, China

Received 10 June 2013; Accepted 7 July 2013

Academic Editors: P. Andrade, J. B. T. Da Rocha, V. C. Filho, and T. Hatano

Copyright © 2013 Jin Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Ultrasound-assisted extraction (UAE) of phenolic compounds from Inula helenium was studied. Effects of ethanol concentration, ultrasonic time, solid-liquid ratio, and number of extractions were investigated. An orthogonal array was constructed to optimize UAE process. The optimized extraction conditions were as follows: ethanol concentration, 30%; solid-liquid ratio, 1 : 20; number of extractions, 2 times; extraction time, 30 min. Under the optimal conditions, the yield of total phenolic compounds and chlorogenic acid was and  mg/g, respectively. The results showed that high amounts of phenolic compounds can be extracted from I. helenium by ultrasound-assisted extraction technology.