食品科学 ›› 2007, Vol. 28 ›› Issue (9): 103-106.

• 基础研究 • 上一篇    下一篇

银耳凝集素红细胞凝集性能的研究

 佀国涵, 马爱民, 吴尧, 谈佳玉   

  1. 华中农业大学食品科技学院; 华中农业大学食品科技学院 湖北武汉430070; 湖北武汉430070;
  • 出版日期:2007-09-15 发布日期:2011-11-22

Study on Hemagglutination Properties of Lectins from Tremella fuciformis

 SHI  Guo-Han, MA  Ai-Min, WU  Yao, TAN  Jia-Yu   

  1. College of Food Science and Technology,Huazhong Agricultural University,Wuhan 430070,China
  • Online:2007-09-15 Published:2011-11-22

摘要: 银耳的生长发育主要经过孢子、菌丝体、子实体三个阶段。银耳孢子、菌丝体、子实体中凝集素的粗提方法主要包括磷酸盐缓冲液抽提,硫酸铵分级沉淀等。这三种凝集素的耐热性都较差,经60℃处理10min后,凝集活性明显降低。它们的耐酸碱性差异较大,孢子凝集素只在中性环境下活性稳定,而菌丝体和子实体分别在偏碱性和偏酸性的条件下稳定。Mg2+、Al3+、Fe3+对三种凝集素的活性均有恢复和增强的作用。在供试的八种测试糖中,只有菌丝体凝集素的凝集活性受到乳糖的抑制。

关键词: 银耳, 凝集素, 红细胞凝集

Abstract: The development of Tremella fuciformis contained three stages of growth,namely spore,mycelium and fruiting body.The isolation procedure involved extraction dealt with phosphate buffered saline and precipitation of 30%~60%(NH4)2SO4.These three lectins from the three stages are all less thermostable.When heated at 70 ℃,they lose their original activity.The agglutination activity of the spore lectin is only stable in neutral environment,whereas the lectins of mycelium and fruiting body are alkali-and acid-stable respectively.Their activities are affected by both demetalization and addition of metal ions including Mg2+,Al3+,Fe3+.Among the various carbohydrates tested,lactose is the only saccharide capable of inhibiting the agglutinating activity of mycelium lectin.

Key words: Tremella fuciformis Berk, lectin, hemagglutination