Generally, the increasing of buckwheat roasting time caused
decreases of protein, available lysine and tryptophan content. This
resulted in an increase of products formed in the early and
advanced stages of the Maillard reaction induced by the heat treatment
of buckwheat groats. Furozine, formed in the early stage of
the Maillard reaction, was detected after roasting in all buckwheat
samples. Increase of FIC, and the presence of significant amounts of
CML and acrylamide were observed after increasing times of roasting.
However, after increasing roasting time the nutritional value of
buckwheat products, determined as FAST index, decreased. Based
on all the results, it should be noted that a roasting time of
30 min appears to be the most advantageous time. Antioxidant
properties were then better preserved than after 40 and 50 min
of the process.