Crystallization kinetics of concentrated α,α-trehalose and α,α-trehalose/salt solutions studied by low-resolution 1H-pulsed NMR

Crystallization kinetics of concentrated trehalose and trehalose/salt solutions were followed by proton (1H) pulsed nuclear magnetic resonance (1H p-NMR). Three concentrations (66, 70, and 72.5%) of trehalose and with the addition of ZnCl2.2H2O, CaCl2.2H2O, and MgCl2.2H2O were crystallized at 5, 10,...

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Autor principal: Gallo, A.
Otros Autores: Buera, M.P, Herrera, M.L
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: Institute of Food Technologists 2002
Acceso en línea:Registro en Scopus
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100 1 |a Gallo, A. 
245 1 0 |a Crystallization kinetics of concentrated α,α-trehalose and α,α-trehalose/salt solutions studied by low-resolution 1H-pulsed NMR 
260 |b Institute of Food Technologists  |c 2002 
270 1 0 |m Herrera, M.L.; Univ. of Buenos Aires, Faculty of Exact Sciences, Department of Industries, Buenos Aires 1428, Argentina; email: Lidia@di.fcen.uba.ar 
506 |2 openaire  |e Política editorial 
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504 |a Keener, K.M., Stroshine, R.L., Nyenhuis, J.A., Proton magnetic resonance measurements of self diffusion coefficient of water in sucrose solutions, citric acid solutions, fruit juices, and apple juice (1997) Transactions of the ASAE, 40, pp. 1633-1641 
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504 |a Mazzobre, M.F., Buera, M.P., Combined effects of trehalose and cations on the thermal resistance of b- galactosidase in freeze- dried systems (1999) Biochimica et Biophysica Acta, 1473, pp. 337-344 
504 |a Miller, D.P., De Pablo, J.J., Corti, H., Thermophysical properties of trehalose and its concentrated aqueous solutions (1997) Pharmaceutical Research, 14 (5), pp. 578-590 
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504 |a Roser, B.J., (1990), US Patent 4891319, Protection of proteins and the like, Jan 2; Roser, B.J., (1992), US Patent 5149653, Preservation of viruses, Sep 22; Rubin, C.A., Wasylyk, J.M., Baust, J.G., Investigation of vitrification by nuclear magnetic resonance and differential scanning calorimetry in honey: A model carbohydrate system (1990) J Agric Food Chem, 38 (9), pp. 1824-1827 
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520 3 |a Crystallization kinetics of concentrated trehalose and trehalose/salt solutions were followed by proton (1H) pulsed nuclear magnetic resonance (1H p-NMR). Three concentrations (66, 70, and 72.5%) of trehalose and with the addition of ZnCl2.2H2O, CaCl2.2H2O, and MgCl2.2H2O were crystallized at 5, 10, 15, 20, and 25°C. Supercooling and molecular diffusion determined the crystallization rates. The highest rate of crystallization of 66, 70, and 72.5% trehalose occurred at 20°C, whereas the lowest rate occurred at 25°C. The maximum solid content was higher at lower temperatures, as expected based on the higher supercooling values. Crystallization was delayed by the addition of salts and especially of CaCl2.2H2O.  |l eng 
593 |a National Univ. of Luján, Dept. of Technology, Provincia de Buenos Aires, 6700, Argentina 
593 |a Univ. of Buenos Aires, Faculty of Exact and Natural Sciences, Ciudad Univ., Buenos Aires, 1428, Argentina 
690 1 0 |a AVRAMI ANALYSIS 
690 1 0 |a CRYSTAL MORPHOLOGY 
690 1 0 |a CRYSTALLIZATION KINETICS 
690 1 0 |a NMR 
690 1 0 |a TREHALOSE 
700 1 |a Buera, M.P. 
700 1 |a Herrera, M.L. 
773 0 |d Institute of Food Technologists, 2002  |g v. 67  |h pp. 1331-1336  |k n. 4  |p J. Food. Sci.  |x 00221147  |w (AR-BaUEN)CENRE-325  |t Journal of Food Science 
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