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Simultaneous determination of flavor enhancers in stock cube samples by using spectrophotometric data and multivariate calibration

2007; Elsevier BV; Volume: 106; Issue: 2 Linguagem: Inglês

10.1016/j.foodchem.2007.06.009

1873-7072

Carolina C. Acebal, Adriana G. Lista, Beatriz S. Fernández Band,

Biochemical Analysis and Sensing Techniques

Spectrophotometric data followed by a suitable treatment of chemometric analysis were used for the simultaneous determination of monosodium glutamate (MSG), guanosine 5′-monophosphate (GMP) and inosine 5′-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 μg mL−1 for IMP and GMP, and 448–1399 μg mL−1 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%).