食品科学 ›› 2008, Vol. 29 ›› Issue (7): 39-42.

• 基础研究 • 上一篇    下一篇

钝顶螺旋藻藻蓝蛋白的富集分离及其稳定性研究

刘杨,王雪青,庞广昌,曹海龙   

  1. 天津市食品生物技术重点实验室 天津商业大学生物技术与食品科学学院; 天津市食品生物技术重点实验室; 天津商业大学生物技术与食品科学学院; 天津300134
  • 出版日期:2008-07-15 发布日期:2011-07-28

Enrichment Separation and Stability of C-phycocyanin from Spirulina platensis

 LIU  Yang, WANG  Xue-Qing, PANG  Guang-Chang, CAO  Hai-Long   

  1. Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce , Tianjin 300134, China
  • Online:2008-07-15 Published:2011-07-28

摘要: 实验研究了盐析沉淀法和等电点沉淀法富集分离钝顶螺旋藻藻蓝蛋白,考察了螺旋藻细胞破碎液的藻液比、盐离子浓度、pH和环境温度对藻蓝蛋白收率和分离因数的影响,并对藻蓝蛋白的热稳定性及酸碱稳定性进行了研究。结果表明,藻液比为0.5g/100ml,50%(W/V)(NH4)2SO4进行盐析沉淀,藻蓝蛋白收率可达60.0mg/g藻粉,分离因数为1.38。螺旋藻藻蓝蛋白在20℃和30℃时保持稳定,在40℃以上稳定性下降。在pH为中性时,藻蓝蛋白稳定性良好,超出此范围螺旋藻藻蓝蛋白稳定性下降。

关键词: 螺旋藻, 藻蓝蛋白, 盐析法, 稳定性, 收率

Abstract: C-phycocyanin enrichment by salting-out and iso-electric precipitation was carried out. Effects of various parameters such as Spirulina powder-phosphate buffer ratio (m/V), salt concentration, pH and temperature on C-phycocyanin yield and separation coefficient were studied. The stability of C-phycocyanin was studied too. Results showed that the separation coefficient of C-phycocynain is as high as 1.38 with a yield of 60.0 mg/g isolated by salting-out precipitation with biomass-solvent ratio of 0.5 g/100 ml and 50% (W/V) (NH4)2SO4. C-phycocyanin is steady under 30 ℃, but it denatures in above 40 ℃ environment. C-phycocyanin is steady on condition of neutral pH value.

Key words: Spirulina, C-phycocyanin, salting-out, stability, yield