Hydrophobic ionic liquid-based ultrasound-assisted extraction of magnolol and honokiol from cortex Magnoliae officinalis

✍ Scribed by Lijin Zhang; Xiao Wang

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 213 KB
• Volume: 33
• Category: Article
• ISSN: 1615-9306
• DOI: 10.1002/jssc.201000076

✦ Synopsis

Abstract

The hydrophobic ionic liquid of [BMIM][PF~6~] was successfully used for the ultrasound‐assisted extraction of hydrophobic magnolol and honokiol from cortex Magnoliae officinalis. To obtain the best extraction efficiencies, some ultrasonic parameters including the concentration of [BMIM][PF~6~], pH, ultrasonic power and ultrasonic time were evaluated. The results obtained indicated that the [BMIM][PF~6~]‐based ultrasound‐assisted extraction efficiencies of magnolol and honokiol were greater than those of the [BMIM][BF~4~]‐based ultrasound‐assisted extraction (from 48.6 to 45.9%) and the traditional ethanol reflux extraction (from 16.2 to 13.3%). Furthermore, the proposed extraction method is validated by the recovery, correlation coefficient (R^2^) and reproducibility (RSD, n=5), which were 90.8–102.6, 0.9992–0.9998, and 1.6–5.4%, respectively.