@article {1285, title = {Extraction of Quercetin from Nothopanax scutellarium Leaves via Ionic Liquid-based Microwave-assisted Extraction}, journal = {Pharmacognosy Journal}, volume = {12}, year = {2020}, month = {November 2020}, pages = {1512-1517}, type = {Original Article}, chapter = {1512}, abstract = {

Introduction: Nothopanax scutellarium leaves have been used in Indonesian traditional medicine to treat several diseases. Previous studies used conventional extraction methods with large volumes of organic solvents, long extraction times, and low levels of quercetin content. This study was aimed to identify the optimal solvent among different ionic liquids that has the highest quercetin content. Methods: Ionic liquids including 1-butyl-3-methylimidazolium bromide, 1-butyl-3-methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium hydrogen sulfate, and 1-hexyl-3-methylimidazolium bromide, for extracting quercetin from N. scutellarium leaves using microwave-assisted extraction under the following conditions: ratio, 1:10; operation time, 10 min; and power, 10 W. Then, quercetin was fractionated using ethyl acetate and separated using 0.01 mol/L sodium bocarbonate, dipotassium phosphate or sodium cloride. The total flavonoid content was determined using a UV-Vis spectrophotometer, and quercetin content was determined using HPLC. Results: Extraction with 1-butyl-3-methylimidazolium chloride using NaCl as the separation salt was associated with the highest total flavonoid (360.57 mg/g) content among the ILs, whereas 1-butyl-3-methylimidazolium tetrafluoroborate combined with sodium chloride generated the highest quercetin content (26.13 mg/g). Conclusion: 1-butyl-3-methylimidazolium tetrafluoroborate is the optimal solvent for extracting quercetin from N. scutellarium leaves.

}, keywords = {Flavonoid, Green extraction, Green technology, Ionic liquid, Mangkokan Leaf}, doi = {10.5530/pj.2020.12.207}, author = {Ika Aulia Rahmi and Mahdi Jufri and Abdul Mun{\textquoteright}im} } @article {256, title = {Application of Ionic Liquid based Microwave-Assisted Extraction of the Secondary Metabolite from Peperomia pellucida (L) Kunth}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {February 2017}, pages = {227-234}, type = {Original Article}, chapter = {227}, abstract = {

Introduction: An ionic liquid (ILs) is a new alternative solvent (containing cations and anions) has the physical and specific solutions properties, and also had proven to be a promising substituent of conventional organic solvents are flammable, volatile and toxic in various processes. The ILS application in separating the secondary metabolites compound from Peperomia pellucida (L) Kunth herbaceous can be carried out using microwaveassisted extraction method (MAE). Objective: The aim of this study was to investigate the effect of ionic liquid based microwave-assisted extraction method for attracting the secondary metabolites compound from P. pellucida compared with a conventional solvent for the enrichment of secondary metabolites (especially polyphenols group) and their HPTLC fingerprinting profile. Methods: The herb dried powder extracted by microwave-assisted extraction using an ionic liquid such us 1-Butyl-3-methylimidazolium chloride ([BMIM]Cl), 1-Butyl-3-methylimidazolium Bromide ([BMIM]Br). The obtained extract solution was partitioned using an organic solvent; the extract was evaporated to obtain a dry extract and determination the HPTLC fingerprinting profile. Results: Based on the research results was obtained from the various types of solvents there are differences in the extraction of secondary metabolite.

}, keywords = {HPTLC profile, Ionic liquid, Microwave-assisted extraction, Peperomia pellucida (L) Kunth, Secondary metabolite.}, doi = {10.5530/pj.2017.2.38}, url = {http://phcogj.com/fulltext/305}, author = {Islamudin Ahmad and Arry Yanuar and Kamarza Mulia and Abdul Mun{\textquoteright}im} }