Chemical Engineering & Technology, Vol.37, No.11, 1854-1860, 2014
Processing of Lovage into High-Value Components Using Supercritical CO2 and Pressurized Liquid Extraction
Lovage roots, leaves, and stems were extracted by supercritical carbon dioxide (SFE-CO2), while the residues of SFE-CO2 were further extracted by pressurized liquid extraction with acetone and methanol. Optimization of SFE-CO2 parameters resulted in enhanced extract yields from all lovage parts. The antioxidant potential of solid material and extracts was assessed by Trolox-equivalent antioxidant capacity (TEAC) in two different assays and by the total phenolic content (TPC). TEAC and TPC values of SFE-CO2 residues were distinctly lower than those of the initial lovage material which indicates that lovage antioxidants are distributed both in lipophilic and fat-insoluble fractions.
Keywords:Antioxidant activity;Lovage;Pressurized liquid extraction;Supercritical fluid extraction;Z-ligustilide