Preparation and Identification of Series of Oligomannuronates

Chem. J. Chinese Universities ›› 2006, Vol. 27 ›› Issue (3): 485.

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Preparation and Identification of Series of Oligomannuronates

LIU Bin¹,WANG Chang-Yun^1*,ZHANG Hong-Rong¹,WANG Bin-Gui²,WEI Yu-Xi³,KANG Kai1,LI Liang¹,YU Guang-Li¹,GENG Mei-Yu¹,GUAN Hua-Shi¹

1. Key Laboratory of Marine Drugs,Ministry of Education,Institute of Marine Drugs,Ocean University of China,Qingdao 266003,China;2. Laboratory of Experimental Marine Biology,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;
3. Department of Biology,Qingdao University,Qingdao 266071,China

Received:2005-03-24 Online:2006-03-10 Published:2006-03-10

Abstract

Abstract:

A series of oligomannuronates with series degree of polymerization(DP=2-8) were prepared by acid hydrolysis from alginate-derived homopolymannuronate blocks,and the structures of the oligosaccharides were analyzed. The macromolecule of alginate was treated by partial acid hydrolysis and fractionated at pH=2.85 resulting in homopolymannuronate blocks. The homopolymer was degraded by acid hydrolysis,and the oligosaccharides were separated and purified by gel chromatography. The oligosaccharides were characterized by fluorophore-assisted carbohydrate electrophoresis(FACE),and the structures of derived oligomannuronates were determined by ESI-MS,NMR as well as FTIR analysis.

Key words: Alginate; Acid hydrolysis; Oligomannuronate; Preparation;Identification

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LIU Bin, WANG Chang-Yun, ZHANG Hong-Rong, WANG Bin-Gui, WEI Yu-Xi, KANG Kai, LI Liang, YU Guang-Li, GENG Mei-Yu, GUAN Hua-Shi. Preparation and Identification of Series of Oligomannuronates[J]. Chem. J. Chinese Universities, 2006, 27(3): 485.

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Preparation and Identification of Series of Oligomannuronates

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