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Abstract:

The aim of this work was to fully understand the physicochemical events involved in the development of the cornflake structure, taking into consideration the water sorption characteristics and state changes in the solid phase as a function of temperature and water content. Complementarily, time-resolved proton nuclear magnetic resonance (1H-TD-NMR) was used to evaluate the dynamic aspects at different stages of the classical cornflake production process. Processing had the effect of reducing the water sorption capacity of the samples and of increasing the sorption energy. While the minimal water content necessary to detect starch gelatinization was lower than the water content at which frozen water was detected by DSC (W = 24%), water excess for an adequate cooking needs to be higher than this value. By describing the process using supplemented state diagrams, it was possible to delimitate regions in which the main components (starch and proteins) underwent specific changes such as gelatinization or crosslinking. The data of comparative mobility of water populations helped to understand the occurrence of those changes. The physical state of the samples could be established for each process stage, the matrix was soft and malleable when important internal and external forces were applied which allowed the change of shape, microstructure, and appearance of the product. Physical hardening occurred after toasting to create the typical expected crispy texture. The data of comparative mobility of proton populations helped to understand the occurrence of those changes, the conditions prevailing in each stage, and the physical state of the sample. © 2014, Springer Science+Business Media New York.

Registro:

Documento: Artículo
Título:Cornflake Production Process: State Diagram and Water Mobility Characteristics
Autor:Farroni, A.E.; del Pilar Buera, M.
Filiación:Laboratorio de Calidad de Alimentos, Suelos y Aguas, INTA Pergamino, Av. Frondizi (Ruta 32) Km 4.5, CC 31-B2700WAA, Pergamino, Buenos Aires, Argentina
Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 100, Ciudad de Buenos Aires, C1428EGA, Argentina
Palabras clave:Cornflakes; DSC; Molecular mobility; NMR; State diagrams; Water sorption isotherm; Cereal products; Gelation; Population statistics; Protons; Sorption; Starch; Cornflakes; DSC; Molecular mobility; State diagram; Water sorption isotherms; Nuclear magnetic resonance
Año:2014
Volumen:7
Número:10
Página de inicio:2902
Página de fin:2911
DOI: http://dx.doi.org/10.1007/s11947-014-1270-5
Título revista:Food and Bioprocess Technology
Título revista abreviado:Food. Bioprocess Technol.
ISSN:19355130
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19355130_v7_n10_p2902_Farroni

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Citas:

---------- APA ----------
Farroni, A.E. & del Pilar Buera, M. (2014) . Cornflake Production Process: State Diagram and Water Mobility Characteristics. Food and Bioprocess Technology, 7(10), 2902-2911.
http://dx.doi.org/10.1007/s11947-014-1270-5
---------- CHICAGO ----------
Farroni, A.E., del Pilar Buera, M. "Cornflake Production Process: State Diagram and Water Mobility Characteristics" . Food and Bioprocess Technology 7, no. 10 (2014) : 2902-2911.
http://dx.doi.org/10.1007/s11947-014-1270-5
---------- MLA ----------
Farroni, A.E., del Pilar Buera, M. "Cornflake Production Process: State Diagram and Water Mobility Characteristics" . Food and Bioprocess Technology, vol. 7, no. 10, 2014, pp. 2902-2911.
http://dx.doi.org/10.1007/s11947-014-1270-5
---------- VANCOUVER ----------
Farroni, A.E., del Pilar Buera, M. Cornflake Production Process: State Diagram and Water Mobility Characteristics. Food. Bioprocess Technol. 2014;7(10):2902-2911.
http://dx.doi.org/10.1007/s11947-014-1270-5