Data di Pubblicazione:
1999
Citazione:
Analysis of galactosylisomaltol in milk systems using HPLC / F. J. Morales, A. Arnoldi. - In: FOOD CHEMISTRY. - ISSN 0308-8146. - 67:2(1999), pp. 185-191.
Abstract:
While performing the HPLC separation of hydroxymethyfurfural (HMF) from in-bottle sterilised milk samples, two unknown compounds, named by us as X and Y, were observed. Preliminary data indicated that the amount of compound X in the samples was dependent on the intensity of the heat treatment applied to milk. Compound X was isolated from heated solutions of lactose/caseinate and milk, and purified by semi-preparative rp-HPLC. Applying HPLC-DAD, UV, IR, GC-MS and NMR analysis it was possible to identify it as galactosylisomaltol. The analysis of HMF and galactosylisomaltol enables to follow simultaneously, the Amadori product degradation through 1,2- or 2,3-enolisation in milk systems. Higher levels of galactosylisomaltol were found in in-bottle sterilised samples as compared with UHT-treated and pasteurised milks. Galactosylisomaltol was not found either in raw or pasteurised milk. Copyright (C) 1999 Elsevier Science Ltd.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Galactosylisomaltol; HPLC; Maillard reaction; Milk
Elenco autori:
F. J. Morales, A. Arnoldi
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