Table 3 shows the colour parameters of the various model systems
including those with food additives. In previous in vitro studies,
Sarria and Vaquero (2001, 2006), Maillard reaction products
inhibited the absorbance of zinc sulphate, iron sulphate, and copper
sulphate. The presence of metals affects the intensity of browning
in Maillard reaction systems consisting of lactose and glycine.
Iron sulphate significant influences the accumulation of brown colour,
but copper sulphate and zinc sulphate only slightly influences
Maillard reaction products such as melanoidins (Ramonaitytéions into Maillard reaction products remains unclear because of the high variability and complexity of the reaction.
et al., 2009). However, the mechanism of incorporation of metal