Title
Physico-chemical changes taking place in gamma irradiated bovine globulins studied by thermal analysis Physico-chemical changes taking place in gamma irradiated bovine globulins studied by thermal analysis
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
,
Subject
Physics
Chemistry
Source (journal)
Journal of thermal analysis and calorimetry. - Place of publication unknown
Volume/pages
99(2010) :1 , p. 315-324
ISSN
1388-6150
ISI
000274213300043
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
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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