INQUISUR   21779
INSTITUTO DE QUIMICA DEL SUR
Unidad Ejecutora - UE
artículos
Título:
Simultaneous determination of flavor enhancers in stock cube samples by using spectrophotometric data and multivariate calibration.
Autor/es:
CAROLINA C. ACEBAL, ADRIANA G. LISTA , BEATRIZ S. FERNANDEZ BAND
Revista:
FOOD CHEMISTRY
Editorial:
Elsevier
Referencias:
Lugar: The Netherlands; Año: 2008 vol. 106 p. 811 - 815
ISSN:
0308-8146
Resumen:
Spectrophotometric data followed by a suitable treatment of chemometric analysis were used for the simultaneous determination of monosodium glutamate (MSG), guanosine 50-monophosphate (GMP) and inosine 50-monophosphate (IMP) in stock cube samples, without any previous extraction step. By this way, the overlapping of the absorption spectra was resolved using a PLS-1 model. The concentration for experimental calibration matrix were varied between 5.03–34.2 lg mL1 for IMP and GMP, and 448–1399 lg mL1 for MSG. The relative errors of prediction (REPCV %) were 1.8, 2.8 and 3.1 for IMP, GMP and MSG, respectively. To verify the accuracy of the proposed method a recovery study on real samples was carried out with satisfactory results (92–110%). MSG. The relative errors of prediction (REPCV %) were 1.8, 2.8 and 3.1 for IMP, GMP and MSG, respectively. To verify the accuracy of the proposed method a recovery study on real samples was carried out with satisfactory results (92–110%). any previous extraction step. By this way, the overlapping of the absorption spectra was resolved using a PLS-1 model. The concentration for experimental calibration matrix were varied between 5.03–34.2 lg mL1 for IMP and GMP, and 448–1399 lg mL1 for MSG. The relative errors of prediction (REPCV %) were 1.8, 2.8 and 3.1 for IMP, GMP and MSG, respectively. To verify the accuracy of the proposed method a recovery study on real samples was carried out with satisfactory results (92–110%). MSG. The relative errors of prediction (REPCV %) were 1.8, 2.8 and 3.1 for IMP, GMP and MSG, respectively. To verify the accuracy of the proposed method a recovery study on real samples was carried out with satisfactory results (92–110%). 0-monophosphate (GMP) and inosine 50-monophosphate (IMP) in stock cube samples, without any previous extraction step. By this way, the overlapping of the absorption spectra was resolved using a PLS-1 model. The concentration for experimental calibration matrix were varied between 5.03–34.2 lg mL1 for IMP and GMP, and 448–1399 lg mL1 for MSG. The relative errors of prediction (REPCV %) were 1.8, 2.8 and 3.1 for IMP, GMP and MSG, respectively. To verify the accuracy of the proposed method a recovery study on real samples was carried out with satisfactory results (92–110%). MSG. The relative errors of prediction (REPCV %) were 1.8, 2.8 and 3.1 for IMP, GMP and MSG, respectively. To verify the accuracy of the proposed method a recovery study on real samples was carried out with satisfactory results (92–110%). lg mL1 for IMP and GMP, and 448–1399 lg mL1 for MSG. The relative errors of prediction (REPCV %) were 1.8, 2.8 and 3.1 for IMP, GMP and MSG, respectively. To verify the accuracy of the proposed method a recovery study on real samples was carried out with satisfactory results (92–110%).