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A comparison study on microwave-assisted extraction of Artemisia sphaerocephala polysaccharides with conventional method: Molecule structure and antioxidant activities evaluation.
- Source :
-
International journal of biological macromolecules [Int J Biol Macromol] 2009 Dec 01; Vol. 45 (5), pp. 483-92. Date of Electronic Publication: 2009 Sep 12. - Publication Year :
- 2009
-
Abstract
- The conventional extraction methods for polysaccharides were time-consuming, laborious and energy-consuming. Microwave-assisted extraction (MAE) technique was employed for the extraction of Artemisia sphaerocephala polysaccharides (ASP), which is a traditional Chinese food. The extracting parameters were optimized by Box-Behnken design. In microwave heating process, a decrease in molecular weight (M(w)) was detected in SEC-LLS measurement. A d(f) value of 2.85 indicated ASP using MAE exhibited as a sphere conformation of branched clusters in aqueous solution. Furthermore, it showed stronger antioxidant activities compared with hot water extraction. The data obtained showed that the molecular weights played a more important role in antioxidant activities.
- Subjects :
- Antioxidants chemistry
Biphenyl Compounds chemistry
Chelating Agents pharmacology
Hydrogen-Ion Concentration
Hydroxyl Radical
Microscopy, Electron, Scanning methods
Models, Statistical
Molecular Weight
Monosaccharides chemistry
Picrates chemistry
Polysaccharides chemistry
Superoxides chemistry
Temperature
Antioxidants pharmacology
Artemisia metabolism
Microwaves
Polysaccharides isolation & purification
Subjects
Details
- Language :
- English
- ISSN :
- 1879-0003
- Volume :
- 45
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- International journal of biological macromolecules
- Publication Type :
- Academic Journal
- Accession number :
- 19751758
- Full Text :
- https://doi.org/10.1016/j.ijbiomac.2009.09.004