潮汕沿海龙须菜的营养成分和多糖组成分析

食品科学 ›› 2006, Vol. 27 ›› Issue (1): 93-97.

潮汕沿海龙须菜的营养成分和多糖组成分析

余杰, 王欣, 陈美珍, 张永雨, 龙梓洁

汕头大学理学院生物系

出版日期:2006-01-15 发布日期:2011-09-05

Analysis on Nutritional Components and Polysaccharide Composition of Gracilaria lemaneiformis from Chaoshan Coast

YU Jie, WANG Xin, CHEN Mei-Zhen, ZHANG Yong-Yu, LONG Zi-Jie

Department of Biology, Shantou University

Online:2006-01-15 Published:2011-09-05

摘要/Abstract

摘要： 对南澳海域龙须菜的营养成分及其活性多糖的组成进行了分析。结果表明,龙须菜粗蛋白、总糖、粗脂肪、粗纤维、灰分含量分别为(%):19.14、43.76、0.5、4.8、28.77,并富含人体八种必需氨基酸和牛磺酸及Fe、Zn等必需微量元素;其多糖含量为31.05%,用DEAE-纤维素离子交换柱层析,可从热水提取的多糖中分离出3个级分;化学分析、纸层析和红外光谱分析表明龙须菜多糖主要由D-半乳糖和3,6-内醚-L-半乳糖组成的含有β-糖苷键的硫酸多糖,但各级分3,6-内醚-L-半乳糖及硫酸基含量相差较大;该多糖的主要组分是低浓度NaCl洗脱的由55.8%D-半乳糖和42.1%3,6-内醚-L-半乳糖以及9.12%硫酸基构成的。

关键词: 龙须菜, 营养成分, 多糖

Abstract: In this paper the main nutritional components and polysaccharid composition of the Gracilaria lemaneiformis collected from the Nanao sea area were analyzed. The results showed that the contents of the crude protein, carbohydrate, crude fat, crude fiber and ash from the Gracilaria lemaneiformis were 19.14%, 43.76%, 0.5%, 4.8% and 28.77% respectively. The Gracilaria lemaneiformis also had a high content of eight essential amino acids and taurine together with essential microelements such as iron and zinc. The content of polysaccharide from Gracilaria lemaneiformis is 31.05%; The polysaccharide extracted by hot water was isolated by DEAE- celluose column chromatography. Three polysaccharide fractions were obtained by eluting with different concentrations of NaCl solutions. The chemistry analysis, paper chromatography and infrared spectroscopy method all showed that polysaccharide from Gracilaria lemaneiformis was polysaccharide sulfate which was mainly composed of D- galactose and 3,6-AG-L-galactose. To every fraction, the contents of SO4- and 3,6-AG-L-galactose had great discrepancy. The polysaccharide eluted by low concentration NaCl solutions was mainly composed of D-galactos(55.8%),3,6-AG-L-galactosee (42.1%) and sulfate-(9.12%).

Key words: Gracilaria lemaneiformis, nutritional components, polysaccharide 2

余杰, 王欣, 陈美珍, 张永雨, 龙梓洁. 潮汕沿海龙须菜的营养成分和多糖组成分析[J]. 食品科学, 2006, 27(1): 93-97.

YU Jie, WANG Xin, CHEN Mei-Zhen, ZHANG Yong-Yu, LONG Zi-Jie. Analysis on Nutritional Components and Polysaccharide Composition of Gracilaria lemaneiformis from Chaoshan Coast[J]. FOOD SCIENCE, 2006, 27(1): 93-97.

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