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Abstract:

The effect of addition of CaCl2 · 2H2O and MgCl2 · 6H2O on crystallization kinetics and the rheological behavior of a 70% trehalose solution was studied by polarized light microscopy and dynamic oscillatory rheometry. Salts caused a delay on nucleation with induction times for crystallization longer for Mg2+ than for Ca2+. Divalent cations were incorporated into crystals, changing the growth of certain faces preferentially, which resulted in changes in morphology. Addition of CaCl2 · 2H2O in a high salt/trehalose molar ratio dramatically increased complex modulus (G*), indicating a stronger viscoelastic behavior. A gel-like structure was formed when Ca2+ was added to trehalose solution. The behavior of Mg 2+/trehalose solutions cannot be considered viscoelastic in nature but as a fluid-like system.

Registro:

Documento: Artículo
Título:Effects of Salts on Crystallization Kinetics and Rheological Behavior of Concentrated α,α-Trehalose Solutions
Autor:Cerdeira, M.; Puppo, M.C.; Martini, S.; Herrera, M.L.
Filiación:CIDCA-CONICET-UNLP, Casilla de correo 553, (1900) La Plata, Argentina
Univ. of Buenos Aires, Dept. of Industries, Intendente Güiraldes S/N, 1428 Buenos Aires, Argentina
Natl. Research Council of Argentina, Argentina
Palabras clave:Crystallization kinetics; Divalent cations; Polarized light microscopy; Rheology; Trehalose
Año:2003
Volumen:68
Número:9
Página de inicio:2644
Página de fin:2650
DOI: http://dx.doi.org/10.1111/j.1365-2621.2003.tb05783.x
Título revista:Journal of Food Science
Título revista abreviado:J. Food. Sci.
ISSN:00221147
CODEN:JFDSA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221147_v68_n9_p2644_Cerdeira

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Citas:

---------- APA ----------
Cerdeira, M., Puppo, M.C., Martini, S. & Herrera, M.L. (2003) . Effects of Salts on Crystallization Kinetics and Rheological Behavior of Concentrated α,α-Trehalose Solutions. Journal of Food Science, 68(9), 2644-2650.
http://dx.doi.org/10.1111/j.1365-2621.2003.tb05783.x
---------- CHICAGO ----------
Cerdeira, M., Puppo, M.C., Martini, S., Herrera, M.L. "Effects of Salts on Crystallization Kinetics and Rheological Behavior of Concentrated α,α-Trehalose Solutions" . Journal of Food Science 68, no. 9 (2003) : 2644-2650.
http://dx.doi.org/10.1111/j.1365-2621.2003.tb05783.x
---------- MLA ----------
Cerdeira, M., Puppo, M.C., Martini, S., Herrera, M.L. "Effects of Salts on Crystallization Kinetics and Rheological Behavior of Concentrated α,α-Trehalose Solutions" . Journal of Food Science, vol. 68, no. 9, 2003, pp. 2644-2650.
http://dx.doi.org/10.1111/j.1365-2621.2003.tb05783.x
---------- VANCOUVER ----------
Cerdeira, M., Puppo, M.C., Martini, S., Herrera, M.L. Effects of Salts on Crystallization Kinetics and Rheological Behavior of Concentrated α,α-Trehalose Solutions. J. Food. Sci. 2003;68(9):2644-2650.
http://dx.doi.org/10.1111/j.1365-2621.2003.tb05783.x