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Potential use of new Colombian sources of betalains. Colorimetric study of red prickly pear (Opuntia dillenii) extracts under different technological conditions

Opened Access Potential use of new Colombian sources of betalains. Colorimetric study of red prickly pear (Opuntia dillenii) extracts under different technological conditions

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Autor: Cejudo Bastante, María Jesús
Hurtado, Nelson
Heredia Mira, Francisco José
Departamento: Universidad de Sevilla. Departamento de Nutrición y Bromatología, Toxicología y Medicina Legal
Fecha: 2015
Publicado en: Food Research International, 71, 91-99.
Tipo de documento: Artículo
Resumen: A new source of betalains to be used as natural colorant (Opuntia dillenii) has been studied. The stability of O.dillenii extracts in different pHs and temperatures over time has been scrutinized. Our attention was focused on differential tristimulus colorimetry and betalain content related to the color, not previously conducted in con- junction in that raw material. On the basis of the results, cold storage conditions (4 °C) were optimal to maintain as possible the initial red color (hab), lightness (L*) and betalain content of the O. dillenii extracts, regardless of pH. Highly-acidic extracts (pH 4) manifested a significantly (p b 0.05) lower colorant intensity (C*ab) and betalain concentration (around 25% and 35%, respectively), with a clearer tendency toward yellowish tonalities (values of hab from 45° to 90°) over time. Furthermore, visually perceptible color changes (ΔE*ab N 3) were induced among very acid (pH 4) and low-acidic (pH 5 and 6) extracts at each temperature.
Cita: Cejudo Bastante, M.J., Hurtado, N. y Heredia Mira, F.J. (2015). Potential use of new Colombian sources of betalains. Colorimetric study of red prickly pear (Opuntia dillenii) extracts under different technological conditions. Food Research International, 71, 91-99.
Tamaño: 1022.Kb
Formato: PDF

URI: http://hdl.handle.net/11441/41829

DOI: http://dx.doi.org/10.1016/j.foodres.2015.02.011

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