A comparative study of conventional and supercritical fluid extraction methods for the recovery of secondary metabolites from Syzygium campanulatum Korth

作者：Memon Abdul Hakeem; Hamil Mohammad Shahrul Ridzuan; Laghari Madeeha; Rithwan Fahim; Zhari Salman; Saeed Mohammed Ali Ahmed; Ismail Zhari^*; Majid Amin Malik Shah Abdul

来源：Journal of Zhejiang University-Science B(Biomedicine & Biotechnology), 2016, 17(9): 683-691.

DOI：10.1631/jzus.B1600019

• Syzygium campanulatum
• Supercritical fluid extraction
• Conventional solvent extractions
• Flavanones
• Chalcone
• Triterpenoids

Syzygium campanulatum Korth is a plant, which is a rich source of secondary metabolites (especially flavanones, chalcone, and triterpenoids). In our present study, three conventional solvent extraction (CSE) techniques and supercritical fluid extraction (SFE) techniques were performed to achieve a maximum recovery of two flavanones, chalcone, and two triterpenoids from S. campanulatum leaves. Furthermore, a Box-Behnken design was constructed for the SFE technique using pressure, temperature, and particle size as independent variables, and yields of crude extract, individual and total secondary metabolites as the dependent variables. In the CSE procedure, twenty extracts were produced using ten different solvents and three techniques (maceration, soxhletion, and reflux). An enriched extract of five secondary metabolites was collected using n-hexane:methanol (1:1) soxhletion. Using food-grade ethanol as a modifier, the SFE methods produced a higher recovery (25.5%aEuro'84.9%) of selected secondary metabolites as compared to the CSE techniques (0.92%aEuro'66.00%).

• 出版日期2016-9