BACKGROUND: Gingerols and ginger polysaccharides, which are hydrophobic and hydrophilic molecules respectively, have been reported as remarkable bioactivities. However, the huge difference in their physiochemical properties as well as the thermal instability of gingerols result in a shortage of effective extraction technologies in which one can effectively extract and separate them in an one-step process. METHODS: Ionic liquid-based ultrasonic-assisted extraction (ILUAE) was applied to extract both gingerols and polysaccharides from ginger in an one-step process. We investigated extraction efficiencies of gingerols and ginger polysaccharides in various conditions using ILUAE. Parameters of ILUAE including ionic liquid concentration, ultrasound power, temperature, solid/liquid ratio as well as extraction temperature were evaluated. RESULTS: Our results indicated that ILUAE had a remarkable capacity to extract gingerols and ginger polysaccharides in this one-step procedure. Under the optimized extraction conditions, ILUAE significantly (p&lt;0.05) increased the extraction yields and shortened the extraction time when compared with traditional methods. After five extraction runs, recycled ionic liquid remained its extraction efficiency comparable to the initial. Furthermore, scanning electron microscopy (SEM) revealed that the remarkable extraction performance was partially ascribed to cell wall damage caused by ionic liquid. CONCLUSION: Gingerols and polysaccharides were successfully extracted from ginger in facile one-sept approach with ILUAE. ILUAE represents a promising technology for simultaneous extraction of lipophilic and hydrophilic bioactive compounds from plant materials.

Simultaneous extraction of gingerols and polysaccharides from ginger (Zingiber officinale Roscoe) with ionic liquid-based ultrasonic-assisted extraction

253rd National Meeting (2017)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.