期刊
CARBOHYDRATE POLYMERS
卷 88, 期 4, 页码 1395-1401出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2012.02.025
关键词
Plantoga asiatica L.; Polysaccharide; Structure characters; Methylation; NMR
资金
- National Natural Science Foundation of China [31130041, 20802032, 21062012]
- National Key Technology R & D Program of China [2012BAD33B06]
- Research Fund for the Doctoral Program of Higher Education of China [200804030001]
- State Key Laboratory of Food Science and Technology [SKLF-MB-201001]
- Jiangxi Provincial Postgraduate Innovation Fund [YC10A031]
PLP-3 (Plantago asiatica L polysaccharide 3) was isolated and purified from the seeds of Plantago asiatica L Its structure characters were elucidated by monosaccharide composition analysis, partial acid hydrolysis and methylation analysis, combined with FT-IR, GC/MS, 1D and 2D NMR spectroscopy. PLP-3 was found to be arabinoxylan, containing glucuronic acid. It was consisted of beta-1 4-linked Xylp backbone with short side chains attached to its O-2 (1,2,4-linked Xylp, 17.87%) or O-3 (1,3,4-linked Xylp, 24.24%) positions. The main terminal residues were T-linked Araf (8.13%), T-linked Xylp (15.58%) and T-linked GlcAp (13.22%). Small amounts of other residues were also found in PLP-3, such as 1,2,5-linked Araf, 1.2-linked Rhap, T-linked Glcp and T-linked Galp. A possible molecular structure was proposed. (C) 2012 Elsevier Ltd. All rights reserved.
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