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Structural characteristics of water-soluble polysaccharides from Rabdosia serra (MAXIM.) HARA leaf and stem and their antioxidant capacities.
- Source :
-
Food chemistry [Food Chem] 2012 Nov 15; Vol. 135 (2), pp. 730-7. Date of Electronic Publication: 2012 May 11. - Publication Year :
- 2012
-
Abstract
- Water-soluble polysaccharides of Rabdosia serra leaf and stem were fractionated by ultrafiltration and DEAE-Sepharose fast flow chromatogram to obtain water (RSLP-I and RSSP-I), 0.1M NaCl (RSLP-II and RSSP-II) and 0.2M NaCl (RSLP-III and RSSP-III) eluates. Their molecular weights were determined by high performance gel permeation chromatography. Monosaccharide composition analysis indicated that the water eluates comprised of rhamnose, arabinose, xylose, mannose, glucose and galactose. The ascending percentage of galactose and descending percentage of glucose in the eluates were observed with the increase of NaCl concentration. The branched RSLP-I and RSSP-I were composed mainly of →6)-Glcp-(1→, →6)-Galp-(1→, and →5)-Araf-(1→ residues with the ratio of 15.0:4.2:3.8 and 5.5:6.4:3.5, respectively. However, a low level of 1,6-linked glucosyl was observed in RSLP-II, RSSP-II, RSLP-III and RSSP-III. The structural characteristics were further analysed by infrared spectrophotometry. The purified leaf and stem polysaccharides possessed moderate antioxidant capacities.<br /> (Copyright © 2012 Elsevier Ltd. All rights reserved.)
- Subjects :
- Antioxidants isolation & purification
Antioxidants metabolism
Carbohydrate Sequence
Isodon chemistry
Molecular Sequence Data
Molecular Structure
Molecular Weight
Plant Extracts isolation & purification
Plant Extracts metabolism
Plant Leaves chemistry
Plant Stems chemistry
Polysaccharides isolation & purification
Polysaccharides metabolism
Solubility
Antioxidants chemistry
Isodon metabolism
Plant Extracts chemistry
Plant Leaves metabolism
Plant Stems metabolism
Polysaccharides chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1873-7072
- Volume :
- 135
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Food chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 22868152
- Full Text :
- https://doi.org/10.1016/j.foodchem.2012.05.029