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Extraction, Purification and partial characterizations of Polysaccharides from Gracilaria lemaneiformis

文献类型: 外文期刊

作者: Yang, Xianqing 1 ; Liu, Mingqiu 1 ; Qi, Bo 1 ; Li, Laihao 1 ; Deng, Jianchao 1 ; Hu, Xiao 1 ; Wu, Yanyan 2 ; Hao, Shuxian;

作者机构: 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Natl R&D Ctr Aquat Product Proc, Key Lab Aquat Prod Proc,Minist Agr, Beijing, Peoples R China

2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Natl R&D Ctr Aquat P

关键词: extraction;purification;characterization;polysaccharides;Gracilaria lemaneiformis

期刊名称:CHEMICAL, MATERIAL AND METALLURGICAL ENGINEERING III, PTS 1-3

ISSN: 1022-6680

年卷期: 2014 年 881-883 卷

页码:

收录情况: SCI

摘要: In the present study, the crude polysaccharides were extracted from the microalgae Gracilaria lemaneiformis with ultrasonic-assisted extraction method and purified by DEAE-52 cellulose chromatography and Sephadex G-100 size-exclusion chromatography in that order. Two main fractions, GPC-1 and GPC-2, were obtained through the extraction and purification steps. Then partial characterizations, such as chemical composition, ultraviolet (UV) spectrum and infrared (IR) spectrum of the two fractions were analyzed in this study. The results indicated that the total sugar contents of GPC-1 and GPC-2 were 89.32% and 88.79%, and the protein contents of these two fractions were only 0.35% and 0.76%, compared with that of crude polysaccharides of 75.49% and 1.92%, respectively. Moreover, both the UV spectrum and the IR. spectrum demonstrated that the two fractions were typical purified polysaccharides. As a consequence, these investigated characterizations could be considered as a favorable evidence for the identification of polysaccharides from Gracilaria lemaneiformis.

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