Physico-chemical changes taking place in gamma irradiated bovine globulins studied by thermal analysis

Cie?la K.; Vansant E.F.

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Physico-chemical changes taking place in gamma irradiated bovine globulins studied by thermal analysis

机译：Physico-chemical changes taking place in gamma irradiated bovine globulins studied by thermal analysis

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摘要

Structural transformations induced in gamma and alpha globulins under influence of gamma irradiation using doses of 2.5 and 24 kGy were studied by differential scanning calorimetry (DSC) and thermogravimetry (TG, DTG). Thermal decomposition of the globulins irradiated in water suspensions occurs at higher temperatures, in comparison to the reference non-irradiated samples. This was related to formation of covalent linkages in the irradiated proteins, apart to chemical changes induced in amino-acids. Essential modification of thermal decomposition was detected already after irradiation with a dose of 2.5 kGy performed for water suspensions. Irradiation of solid native proteins induces decrease in decomposition temperature and gives evidence of proteins degradation.

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《Journal of thermal analysis and calorimetry》 |2010年第1期|315-324|共10页
作者
Cie?la K.; Vansant E.F.;
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作者单位

Institute of Nuclear Chemistry and Technology, Dorodna 16 str., 03-195 Warszawa, Poland;

Department of Chemistry, University of Antwerp, Universiteitplein, 2610 Wilrijk, Belgium;

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原文格式 PDF
正文语种英语
中图分类物理化学（理论化学）、化学物理学;
关键词
Differential scanning calorimetry (DSC); Gamma irradiation; Globulins; Proteins; Thermal analysis; Thermal decomposition; Thermogravimetry;

Physico-chemical changes taking place in gamma irradiated bovine globulins studied by thermal analysis

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