Microwave-Assisted Extraction and Solid-Phase Separation of Quercetin from Solid Onion (Allium cepa L.)
- Authors
- Kumar, Brajesh
- Format
- Article
- Status
- publishedVersion
- Description
The challenge of extraction of natural product in the twenty-first century is to achieve 100% selectivity of the desired product and develop renewable energy based processes. An object of the present work is to provide a method for producing specific bioactive compounds from agricultural products. A simple protocol was used to obtain the conditions of microwave-assisted extraction (MWAE) and ultrasound-assisted extraction (USAE). Total quercetin content under microwave irradiation for 150 sec at pH 6.25 (209 mg/ 100 gm F. wt). The effects of operating conditions, such as extraction time and pH on the extraction yield of quercetin were studied. Microwave-assisted ionic liquid-based silica sorbent (ILSis) was developed by a process involving surface chemical modification of commercial silica using a synthesized ionic liquid and characterized by FTIR. The obtained particles were successfully used as a special sorbent in a solid-phase separation process to isolate quercetin and its glycosides from solid onion. Different washing and elution solvents, such as water, water/methanol (v/v), and pure methanol were evaluated. Ionic liquid-based silica sorbent was compared with traditional C18 sorbent and it exhibited higher selectivity. The target compounds in solid onion containing quercetin and its glycosides were determined.
https://www.researchgate.net/publication/264348200_Microwave-Assisted_Extraction_and_Solid-Phase_Separation_of_Quercetin_from_Solid_Onion_Allium_cepa_L
- Publication Year
- 2014
- Language
- eng
- Topic
- QUERCETIN
FLAVANOIDS
MICROWAVE-ASSISTED EXTRACTION
FTIR
- Repository
- Repositorio SENESCYT
- Rights
- openAccess
- License
- openAccess