食品科学 ›› 2011, Vol. 32 ›› Issue (8): 50-53.doi: 10.7506/spkx1002-6630-201108011

• 工艺技术 • 上一篇    下一篇

四角蛤蜊多糖脱蛋白方法研究

张 坤1,2,吴 皓1,2,*,王令充1,2,葛 莹1,曹 杨1   

  1. 1.南京中医药大学药学院 2.江苏省海洋药物研究开发中心
  • 出版日期:2011-04-25 发布日期:2011-04-12
  • 基金资助:
    国家海洋局公益性行业科研专项(200705009);国家自然科学基金项目(30900293)

Comparative Study on Deproteinization Methods for Polysaccharide from Mactra veneriformis

ZHANG Kun1,2,WU Hao1,2,*,WANG Ling-chong1,2,GE Ying1,CAO Yang2   

  1. 1. College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210029, China; 2. Jiangsu Provincial Centre for Research and Development of Marine Drugs, Nanjing 210029, China
  • Online:2011-04-25 Published:2011-04-12

摘要: 目的:优选出四角蛤蜊粗多糖脱蛋白的方法,并对脱蛋白后的产物进行含量测定和活性验证。方法:通过离子交换法、三氯乙酸(TCA)法、絮凝法及盐析法分别对四角蛤蜊粗多糖进行脱蛋白,比较各种方法的脱蛋白效果。结果:离子交换法、TCA法、盐析法脱蛋白效果都较理想,所得除蛋白多糖总糖含量分别为85%、90.96%、83%,絮凝法不适合对四角蛤蜊粗多糖中蛋白质的去除,活性实验表明TCA法和离子交换法所得样品降血糖活性较好,其中TCA法所得样品与模型对照组比较有显著性差异,P<0.05。结论:优选方法合理可行。

关键词: 四角蛤蜊粗多糖, 脱蛋白, 活性

Abstract: Objective: To screen the optimum method for deproteinizing crude polysaccharide from Mactra veneriformis and to determine the polysaccharide content and biological activity of purified product. Methods: The deproteinization of crude polysaccharide from Mactra veneriformis was comparatively studied using ion exchange, trichloroacetic acid (TAC) method, PEG flocculation and salt fractionation. Results: Ion exchange, trichloroacetic acid (TAC) method and salt fractionation had good deproteinizing effect on crude polysaccharide from Mactra veneriformis, and the polysaccharide contents in the resulting purified products were 85%, 90.96% and 83%, respectively. PEG flocculation was unsuitable for the removal of protein impurities from crude polysaccharide from Mactra veneriformis. Ion exchange and TAC method provided highly effective hypoglycemic products, and the product derived from TAC method displayed a significant difference compared to the model control (P < 0.05). Conclusion: The screened methods are feasible in practice.

Key words: crude Mactra veneriformis polysaccharide, deproteinnization, activity

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