FOOD. Science. Technology. Quality

Food. SCIENCE. Technology. Quality

Food. Science. TECHNOLOGY. Quality

Food. Science. Technology. QUALITY




Selected properties of fried potato snacks with various contents of dietary fiber added to semi-products


The objective of the investigations performed was to determine in what way two factors: dietary fibre added to extruded ‘pellets’, i.e. semi-products of snacks, and moisture content in those pellets influenced fat absorption and texture of snacks manufactured. For the investigation purposes, while manufacturing pellets at low temperatures, the amounts equaling 5% and 10% of dietary fibre were added to them. During the extrusion of the semi-products (pellets), their moisture content was successively raised to the following levels: 8%, 10%, 12%, 14%, and 16%. In ready snacks that were fried in hot oil, their fat content and texture were determined by a sensory method and using an ‘Instron’ texture meter. It was stated that both the fat content in snacks and their texture depended, concurrently, on the pellet moisture and the quantity of dietary fibre added to them. The more quantities of dietary fibre were added, the higher the fat content in snacks was reduced, contrary to the snack hardness, which increased along with the raising amounts of the fibre added; in particular in snacks manufactured from pellets with an 8% to 12% moisture content. The quantity of dietary fibre added didn’t significantly affect the fat content in snacks made from pellets having a high 16% moisture content. The addition of 5% and 10% of dietary fibre to extruded products did not significantly affect changes in the texture of snacks obtained from pellets of 12% and 14% moisture contents. Snacks of the best crispy texture were manufactured from pellets containing 12% of moisture irrespectively of the dietary fibre content, as well as from pellets showing a moisture level of 14% and containing 5% of dietary fibre or no fibre at all.


pellets, potato snacks, fibre, fat content, texture