Sabato, Susy Frey et Lacroix, Monique 
ORCID: https://orcid.org/0000-0002-2042-4033
(2002).
Radiation effects on viscosimetry of protein based solutions
Radiation Physics and Chemistry
, vol. 63
, nº 3-6.
pp. 357-359.
DOI: 10.1016/S0969-806X(01)00525-4.
Résumé
Due to their good functional properties allied to their excellent nutritional value, milk protein isolates and soy protein concentrates have gained a crescent interest. These proteins could have their structural properties improved when some treatments are applied, such as gamma irradiation, alone or in presence of other compounds, as a plasticizer. In this work, solutions of those proteins were mixed with a generally recognized as safe plasticizer, glycerol. These mixtures (8% protein (w/v) base) at two ratios 1:1 and 2:1 (protein:glycerol) were submitted to a gamma irradiation treatment (60Co), at doses 0, 5, 15 and 25 kGy, and their rheological performance was studied. As irradiation dose increased viscosity measurements decayed significantly (p<0.05) for mixture soy/glycerol and calcium caseinate/glycerol. The mixture sodium caseinate/glycerol showed a trend to form aggregation of macromolecules with dose of 5 kGy, while the apparent viscosity for dispersions containing whey/glycerol remained almost constant as irradiation dose increases. In the case of soy protein isolate and sodium caseinate, a mixture of 2:1 showed a significant higher viscosity (p<0.05) than a mixture of 1:1.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | Viscosimetry; Soy protein; Whey protein; Caseinates; Gamma irradiation |
| Centre: | Centre INRS-Institut Armand Frappier |
| Date de dépôt: | 07 mars 2025 21:59 |
| Dernière modification: | 07 mars 2025 21:59 |
| URI: | https://espace.inrs.ca/id/eprint/15138 |
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