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Carboxymethylation of polysaccharide isolated from Alkaline Peroxide Mechanical Pulping (APMP) waste liquor and its bioactivity.
- Source :
-
International journal of biological macromolecules [Int J Biol Macromol] 2021 Jun 30; Vol. 181, pp. 211-220. Date of Electronic Publication: 2021 Mar 23. - Publication Year :
- 2021
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Abstract
- In recent years, the biological activity of polysaccharides and their derivatives has been widely studied. However, in addition to the natural polysaccharides directly extracted from plants and animals, there are rich polysaccharides in the pulping waste liquor that have not been fully utilized. The extracted polysaccharide from eucalyptus Alkaline Peroxide Mechanical Pulping (APMP) waste liquor was used as a raw material. For the production of carboxymethyl polysaccharide, the effects of temperature (T), the amount of alkali (NaOH) and the amount of etherifying agent (ClCH <subscript>2</subscript> COOH) on the degree of substitution (DS) were investigated, the optimal preparation conditions are: reaction time 2 h, temperature 75 °C, and the molar ratio of polysaccharide, NaOH and ClCH2COOH is 1:1:2, the highest DS is 1.47; FT-IR, NMR and GPC were used to characterize the structure and Molecular weight, the results show that the polysaccharide of APMP waste liquor is rich in xylan, and it was proved that the carboxymethyl substitution was successful and the positions of the substituent group were determined. The characterization and biological activity research of xylan polysaccharide (XP) and carboxymethyl xylan polysaccharide (CMXP), such as antioxidation, moisture absorption/retention, bacteriostatic action and cytotoxicity were discussed. CMXP shows better effects compared with XP.<br /> (Copyright © 2021. Published by Elsevier B.V.)
- Subjects :
- Animals
Anti-Bacterial Agents pharmacology
Antioxidants analysis
Bacillus subtilis drug effects
Carbon-13 Magnetic Resonance Spectroscopy
Humidity
Methylation
Microbial Sensitivity Tests
Molecular Weight
Oxidation-Reduction
PC12 Cells
Polysaccharides chemical synthesis
Polysaccharides pharmacology
Proton Magnetic Resonance Spectroscopy
Rats
Salmonella drug effects
Spectroscopy, Fourier Transform Infrared
Temperature
Xylans chemical synthesis
Xylans chemistry
Alkalies chemistry
Peroxides chemistry
Polysaccharides chemistry
Polysaccharides isolation & purification
Waste Products analysis
Subjects
Details
- Language :
- English
- ISSN :
- 1879-0003
- Volume :
- 181
- Database :
- MEDLINE
- Journal :
- International journal of biological macromolecules
- Publication Type :
- Academic Journal
- Accession number :
- 33771550
- Full Text :
- https://doi.org/10.1016/j.ijbiomac.2021.03.125