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Journal of Chinese Pharmaceutical Sciences ›› 2017, Vol. 26 ›› Issue (2): 130-138.DOI: 10.5246/jcps.2017.02.012

• Original articles • Previous Articles     Next Articles

Optimization of ultrasound assisted extraction of celastrol from Celastrus monospermus Roxb. using response surface methodology

Chaohai Pang1, Gong Fang2, Dingyong Wang1*   

  1. 1. College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
    2. Department of Pharmacy, Jingmen No.1 People’s Hospital, Hubei 448000, China
  • Received:2016-09-18 Revised:2016-11-28 Online:2017-02-28 Published:2016-12-05
  • Contact: Tel.: +86-020-39352213, E-mail: wdingyong@163.com

Abstract:

In the present study, we aimed to investigate the effects of key extraction parameters including extraction time (10-20 min),extraction temperature (30-60 °C), ultrasonic power (60-90 W) and solvent-to-solid (S/S) ratio (10-30 mL/g) on yield of celastrol from Celastrus monospermus Roxb. To optimize the conditions, we investigated the effects of parameters on the ultrasound assisted extraction (UAE) with the Box-Behnken Design (BBD), one widely used form of Response Surface Methodology (RSM). In all tested solvents, ethanol was the most effective for celastrol extraction, followed by methanol, ethanol, ethyl acetate, n-butanol and water. A second order polynomial model was fitted well to the extraction experimental data with R2 of 0.9928. Extraction yield of 3.116 mg/g was obtained for celastrol under the optimized extraction conditions of extraction time (20 min), extraction temperature (46 °C), ultrasonic power (60 W) and S/S ratio (30 mL/g). Experimental validation was performed, and the experimental values agreed well with the predicted values. The results indicated that the UAE was good extraction material for celastrol from C. monospermus Roxb.

Key words: Celastrol, Box-behnken design, Response surface methodology, Ultrasound assisted extraction, Analysis

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