the relative concentration of acyclic sugar present does not
completely explain the differences between the reactions observed for the different
sugars. The relative rates of browning of glucose and fructose also depend on the
extent to which the reaction mixture is buffered. In unbuffered media, the rate of
browning of fructose with amino acids is greater than that of glucose. However, in
buffered media such as when whey or egg albumin is added to a candy, fructose
browns more slowly than glucose (Wedzicha, 1984a). For hexoses, the order of
reactivity is D-galactose>D-mannose>D-glucose. Reducing disaccharides are
considerably less reactive than their corresponding monomers.