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Formation kinetics of hydroxymethylfurfural and brown coloured compounds in goat milk during heating

The formation of hydroxymethylfurfural, nonenzymatic brown coloured compounds and free sulphydryl groups in goat milk was studied during heating at 75–95 °C. Analysis of kinetic data suggested that formation of hydroxymethylfurfural and nonenzymatic brown coloured compounds followed zero order reaction kinetics, while formation of free sulphydryl groups during heating varied depending on heating time. A good linear correlation (r = 0.839) was found between brown coloured compounds and hydroxymethylfurfural content in milk samples during heating. Activation energies (Ea) for the formation of hydroxymethylfurfural and nonenzymatic brown coloured compounds were 96.31 and 69.79 kJ/mol, respectively.

Authors:   ONUR GÜNEŞER, AYŞEGÜL KIRCA TOKLUCU, YONCA KARAGÜL‐YÜCEER
Journal:   International Journal of Dairy Technology
Year:   2012
Pages:   no
DOI:   10.1111/j.1471-0307.2012.00869.x
Publication date:   11-07-2012

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