食品科学 ›› 2011, Vol. 32 ›› Issue (24): 73-77.doi: 10.7506/spkx1002-6630-201124016

• 工艺技术 • 上一篇    下一篇

浒苔多糖的磷酸化修饰工艺

孙雪1,潘道东1,2,*,曾小群1,曹锦轩1   

  1. 1.宁波大学生命科学与生物工程学院 2.南京师范大学 国家乳品加工技术研发分中心
  • 出版日期:2011-12-25 发布日期:2011-12-29
  • 基金资助:
    浙江省自然科学基金重点项目(Z3110211)

Phosphorylation Modification of Polysaccharides from Entermorpha

SUN Xue1,PAN Dao-dong1,2,*,ZENG Xiao-qun1,CAO Jin-xuan1   

  1. (1. College of Life Science and Biotechnology, Ningbo University, Ningbo 315211, China; 2. Branch of National Dairy Processing Technology Developing Center, Nanjing Normal University, Nanjing 210097, China)
  • Online:2011-12-25 Published:2011-12-29

摘要: 利用离子交换层析和凝胶层析对浒苔多糖进行分离纯化,并探讨其磷酸化修饰的最佳工艺条件。通过单因素试验确定反应温度、反应时间、反应pH值、磷酸化试剂质量浓度的取值范围,再用响应面设计法确定磷酸化修饰的最佳条件。结果表明:反应时间、磷酸化试剂质量浓度显著影响浒苔多糖磷酸化程度,当反应温度80℃、反应时间5h、反应pH9.0、磷酸化试剂质量浓度0.10g/mL时,磷酸化修饰的浒苔多糖磷酸根含量(以P计)达到14.40%。

关键词: 浒苔多糖, 磷酸化, 响应面法优化

Abstract: This study was undertaken to optimize the phosphorylation of Enteromorph polysaccharides prepared by hot water extraction, deproteinization, decolorization, and sequential chromatographic purification on DEA-Sepharose Fast Flow and Sephadex G-100 columns. Phosphate group content in phosphorylated products was investigated with respect to reaction conditions including temperature, reaction time, pH and phosphorylation agent dosage (sodium tripolyphosphate-sodium trimetaphosphate at a mass ratio of 6:1) by one-factor-at-a-time experiments and subsequent response surface analysis. The optimal phosphorylation conditions were pH 9.0, temperature 80 ℃ and phosphorylation agent dosage 0.10 g/mL for a reaction duration of 5 h. Under these conditions, the phosphate group content in phosphorylated products was 14.40%.

Key words: polysaccharides from Entermorpha, phosphorylation, response surface methodology (RSM)

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