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Roasting of flour in oil or fat to form a roux is a common application in the preparation of many foods. In this study the development of 5-(hydroxymethyl)furfural (5-HMF) during roasting of white flour and oil mixtures prepared at 1:1, 1:2 and 1:3 ratios at 120, 160 and 200°C was investigated. Extraction of 5-HMF from the solids phase, liquid (oil) phase and mixed phase of the samples was performed...