1. Introduction
Breakfast cereals play an important role in the diet and ensure the proper organism functioning e.g. nervous
system and gastrointestinal tract (Frame 1994). Directly expanded breakfast cereals, next to müsli or conventional
flakes, are the most popular type of breakfast products, especially in the Western countries. Wholegrain flour is an
important source of dietary fiber in the diet, which is responsible for improving the function of gastrointestinal tract
and affects the human cardiovascular system.