Characterization of an arabinogalactan isolated from gum exudate of Odina wodier Roxb.: Rheology, AFM, Raman and CD spectroscopy.
AFM
Antioxidant
Arabinogalactan
Gum Odina
Polysaccharide
Raman spectroscopy
Rheology
Journal
Carbohydrate polymers
ISSN: 1879-1344
Titre abrégé: Carbohydr Polym
Pays: England
ID NLM: 8307156
Informations de publication
Date de publication:
15 Dec 2020
15 Dec 2020
Historique:
received:
12
05
2020
revised:
12
08
2020
accepted:
13
08
2020
entrez:
14
10
2020
pubmed:
15
10
2020
medline:
2
4
2021
Statut:
ppublish
Résumé
Purified gum odina (PGO) from Odina wodier Roxb. was characterized by rheology, AFM, Raman and CD spectroscopy, in vitro antioxidant activity against hydroxyl radical and superoxide radical, and total antioxidant capacity. The PGO dispersions exhibited pseudoplastic behaviour. The viscosity of dispersion increased with increasing PGO concentration, but decreased with increasing temperature and added salt concentration. The loss modulus was higher than storage modulus indicating prevalently viscous characteristics. AFM analysis showed irregular spherical lumps due to inter- and intramolecular interactions. The Raman spectrum of PGO was similar to that of gum arabic. Circular dichroism revealed partial adoption of polyproline II type conformation, suggesting a less compact structure. The PGO was found to scavenge hydroxyl radical (IC
Identifiants
pubmed: 33049856
pii: S0144-8617(20)31123-1
doi: 10.1016/j.carbpol.2020.116950
pii:
doi:
Substances chimiques
Antioxidants
0
Galactans
0
Plant Gums
0
arabinogalactan
SL4SX1O487
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
116950Informations de copyright
Copyright © 2020 Elsevier Ltd. All rights reserved.