期刊文献+

丝素固定化木瓜蛋白酶的特性研究 被引量:4

Studies on characteristics of immobilized papain on silk fibroin
下载PDF
导出
摘要 以活化丝素为载体,采用共价交联法固定木瓜蛋白酶,研究了丝素固定化木瓜蛋白酶的酶学性质. 结果表明:固定化酶的表观米氏常数Kappm[酪蛋白]为0.092%,是溶液酶的米氏常数Km的0.46倍;最适pH为 7.5;pH 稳定性在6.5~8.0;在4~55 ℃范围内酶活力稳定;溶液酶的操作半衰期为38 d,固定化酶为54 d. 固定化酶的操作半衰期较溶液酶长. Using the activated fibroin as cartier, the papain was immobilized using covalence-crosslinking method. Studies on some characteristics of the fibroin-immobilized papain showed: the Km^app[ casein] of the immobilized papain was 0. 092% , and the Km [casein] of the free papain was 0. 198% , which mean the affinity of the immobilized papain for casein increased greatly, being 0.46 times of the free papain. The optimum pH value was 7.5 for the immobilized papain. The immobilized papain was stable under 6.5 - 8.0. The heat stability of the immobilized papain was 4 - 55 ℃. The operation half-life of the free papain was 38 d while the immobilized papain was 54 d. The operation half-life of the immobilized papain was longer than that of the free papain.
出处 《华南农业大学学报》 CAS CSCD 北大核心 2005年第4期81-83,共3页 Journal of South China Agricultural University
基金 华南农业大学校长基金资助项目(5400-K00014)
关键词 丝素 固定化木瓜蛋白酶 酶学特性 silk fibroin immobilized papain characteristics of papain
  • 相关文献

参考文献7

  • 1邓红涛,吴健,徐志康,徐又一,Seta Patrick.酶的膜固定化及其应用的研究进展[J].膜科学与技术,2004,24(3):47-53. 被引量:16
  • 2EL-MASRY M M, de MAIO A, MARTELLI P L, et al. Influence of the immobilization process on the activity of β-galactosidase bound to nylon membranes grafted with glycidyl methacrylate: Part 1. Isothernol behavior[J]. J Mol Cat B: Enzy Matic, 2001,16:175-189.
  • 3ARICA M Y. Epoxy-derived pH EMA membrane for use bioactive macromolecules immobilization: Covalently bound urease in a continuous model system[J]. J Appl Polym Sci, 2000,77:2 000-2 008.
  • 4WEETALL H, MASON R. Studies on immobilized papain[J]. Biotechnol, 1973,15(3): 455.
  • 5陈芳艳,纪平雄.家蚕丝素固定化木瓜蛋白酶的研究[J].华南农业大学学报,2004,25(3):83-86. 被引量:4
  • 6张树政.酶制剂工业:上册[M].北京: 科学出版社,1998.375-377.
  • 7ARICA M Y, KACAR Y, ERGENE A, et al. Reversible immobilization of lipase on phenylalanine containing hydrogel membranes[J]. Process Biochem, 2001,36:845-847.

二级参考文献41

  • 1黄晨,徐新颜,徐静斐,王顺光,袁中一.丝素膜作为固定化酶载体的研究──丝素膜固定化青霉素酰化酶性质的研究[J].丝绸,1996,33(8):13-15. 被引量:10
  • 2朱良均,姚菊明,李幼禄.蚕丝蛋白——功能性生物材料[J].中国蚕业,1996,17(4):26-28. 被引量:19
  • 3曹国民,黄杰,高广达.蚕丝固定化脂肪酶的研究[J].生物工程学报,1997,13(1):88-92. 被引量:22
  • 4INOUE S,MATSUNAGA Y,IWANE H,et al.Entrapment of phenylalanine ammonia-lyase in silk fibroin for protection from proteolytic attack[J].Biochem Bio-Phys Res Commun,1986,141(1): 165-170.
  • 5ASAKURA T,YOSHIMIZU H,KAZUHARA A,et al.Mechanism of glucose oxidase immobilization with silk fibroin[J].Nippin Sanshigaku Zasshi,1988,57(3) :203 - 209.
  • 6DEMURA M,ASAKURA T,NAKAMURA E,et al.Immobilization of peroxidase with a bombyx mori silk fibroin membrane and its application to biophotosensors[ J].Biotechnol,1989,10(2):113- 119.
  • 7BRADFORD M.A rapid and sensifive method for the quantities of microgram quantifies of protein utilizing the principle of proteindye binding [J].Anal Biochem,1976,(72): 248 -254.
  • 8相沢孝亮 黄文涛 译.酶应用手册[M].上海:上海科学技术出版社,1989.113-116.
  • 9Mohy Eldin M S, Bencivenga U, Rossi S, et al. Characterization of the activity of penicillin G acylase immobilized onto nylon membranes grafted with different acrylic monomers by means of γ - radiation[J]. J Mol Cat B:Enzymatic, 2000,233 - 244.
  • 10Miura S, Kubota N, Kawakita H, et al. High- throughput hydrolysis of starch during permeation across aamylase-immobilized porous hollw- fiber membranes[J]. Radiation Phys Chem, 2002,63:143-149.

共引文献18

同被引文献71

引证文献4

二级引证文献9

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部