食品科学 ›› 2011, Vol. 32 ›› Issue (16): 41-44.doi: 10.7506/spkx1002-6630-201116009

• 工艺技术 • 上一篇    下一篇

双水相萃取法提取条斑紫菜R-藻红蛋白工艺

岳 岑1,冯维希2,黄 文1,王 益1,*   

  1. 1. 华中农业大学食品科技学院
    2.江苏联合职业技术学院连云港中医药分院
  • 出版日期:2011-08-25 发布日期:2011-07-26
  • 基金资助:
    连云港市2008 年科技发展计划(综合类)项目(ZH200808)

Process Optimization for Aqueous Two-phase Extraction of R-Phycoerythrin from Porphyra yezoensi

YUE Cen1,FENG Wei-xi2,HUANG Wen2,WANG Yi1,*   

  1. (1. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; 2. Lianyungang Chinese Medicine Branch, Jiangsu Union Technical Institute, Lianyungang 222006, China)
  • Online:2011-08-25 Published:2011-07-26

摘要: 以条斑紫菜为原料,采用双水相萃取法对R-藻红蛋白进行提取,讨论不同工艺条件聚合物分子大小及质量分数、成相盐质量分数、离子强度对藻红蛋白的提取效果,通过正交试验确定藻红蛋白的最佳提取条件。结果表明当6%聚乙二醇4000、13%硫酸钠、1.5%氯化钠时,蛋白纯度可由粗液的0.187上升至0.727,是传统硫酸铵盐析法的2.25倍,说明双水相萃取法比硫酸铵盐析法更适合提取R-藻红蛋白。

关键词: 条斑紫菜, 藻红蛋白, 双水相萃取, 优化

Abstract: On the basis of one-factor-at-a-time experiments, an L16(43) orthogonal array design was performed to optimize process conditions for aqueous two-phase extraction of R-phycoerythrin from Porphyra yezoensi. The effects of PEGs of different molecular weights, PEG 4000 dosage, the concentration of Na2SO4 as the phase-forming salt and ionic strength on the extraction of R-phycoerythrin were examined. The results indicated that the optimal aqueous two-phase extraction conditions were PEG 4000 as the phase-forming polymer at 6%, Na2SO4 concentration 13%, NaCl concentration 1.5%. After the optimized aqueous two-phase extraction, the purity of R-phycoerythrin was increased to 0.727 from 0.187, showing a 2.25-fold increase. Therefore, aqueous two-phase extraction is more suitable for R-phycoerythrin extraction than ammonium sulfate precipitation.

Key words: Porphyra yezoensis, R-phycoerythrin, aqueous two-phase extraction, optimization

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