Studies on scavenged effect of O<sub>2</sub><sup>-.</sup> by amberacid chitosan complex with copper (II)

MA Jianhua

您当前的位置：

首页 >

文章列表页 >

Studies on scavenged effect of O₂^-. by amberacid chitosan complex with copper (II)

Radiation Chemistry | 更新时间：2023-03-30

- Studies on scavenged effect of O₂^-. by amberacid chitosan complex with copper (II)
- Journal of Radiation Research and Radiation Processing Vol. 23, Issue 2, Pages: 72(2005)
- 作者机构：
  
  1.集美大学生物工程学院　厦门　361021
- 作者简介：
- 基金信息：
- DOI：
  CLC：
扫描看全文
MA Jianhua. Studies on scavenged effect of O₂^-. by amberacid chitosan complex with copper (II). [J]. Journal of Radiation Research and Radiation Processing 23(2):72(2005)
DOI：

MA Jianhua. Studies on scavenged effect of O₂^-. by amberacid chitosan complex with copper (II). [J]. Journal of Radiation Research and Radiation Processing 23(2):72(2005) DOI：

摘要

在核黄素水溶液反应体系中，以甲硫氨酸和超氧化物歧化酶为竞争清除剂,[1-3],，测定了琥珀酸-氨基葡糖-二价铜络合物（Amberacid -chitosan -complex with copper (II)，ACCC）清除超氧阴离子自由基的反应速率常数。使用254、365nm的紫外光和太阳光为光照源，分别测得清除超氧阴离子自由基的反应速率常数为1.26×10,9,、1.11×10,9, 、4.98×10,8, mol,-1, s,-1, dm,3,。本研究还表明，琥珀酸-氨基葡糖-二价铜络合物清除超氧阴离子自由基的效率分别达91%，这与超氧化物歧化酶的清除效率（93%）几乎相同，但远高于用琥珀酸清除超氧阴离子自由基的效率（2.6%）或用氨基葡糖清除超氧阴离子自由基的效率（5.8%）。

Abstract

By use of steady photo-irradiation in the system of riboflavin aqueous solution containing methyl-sulf-amino acid and superoxide dismutase (SOD) as competitive scavenger of O,2, the rate constant of superoxide anion radical (O,2,−,·) scavenged by (Amberacid-chitosan-complex with copper (II), ACCC) was determined as 1.26×10,9, 1.11×10,9, and 4.98×10,8, mol,-1, s,-1, dm,3, under irradiation of 254nm, 365nm UV lights and sun light, respectively. The results also show that the scavenge rate of O,2,−,· by ACCC reached 91%, which is about the same as with natural SOD (93%), and is far more higher than the O,2,−,· scavenge rate with just amberacid or chitosan, which is only 2.6% and 5.8%, respectively.

关键词

琥珀酸-氨基葡糖-二价铜络合物超氧阴离子自由基清除效应速率常数

Keywords

Amberacid-chitosan- complex with copper (II)Superoxide anion radicalScavenging effectRate constant

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

PULSE RADIOLYSIS STUDY OF THE INTERACTION OF α-TOCOPHEROL AND TRICHLOROMETHYL PEROXYL RADICAL CCl₃O₂^·

Related Author

No data

Related Institution

School of Chemistry and Chemical technology, Shanghai Jiao Tong University

Laboratory of Radiation Chemistry, Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences

⁰

Studies on scavenged effect of O2-. by amberacid chitosan complex with copper (II)

DOI：

摘要

Abstract

关键词

Keywords

references

Studies on scavenged effect of O₂^-. by amberacid chitosan complex with copper (II)