Commercial semolina was obtained from Molino Borgo San
Dalmazzo (Borgo San Dalmazzo-CN, Italy). The composition of the
pasta semolina as supplied by the manufacturers was: protein 13 g/
100 g, carbohydrate 75 g/100 g, moisture 12 g/100 g. Two inulin
products from chicory of different degree of polymerisation (DP)
were supplied by Orafti Food Ingredients (Belgium): Raftiline® HPX
(inulin HPX, DP ¼ 23) and Raftiline® GR (inulin GR, DP ¼ 10). Sugar
content (glucose, fructose and sucrose) was 0.5 g/100 g d.b. and
12 g/100 g d.b. for inulin HPX and GR, respectively. Glucagel (GG)
with 76.7 g/100 g of b-glucan content was supplied from DKSH
(Italy). Psyllium fibre (85 g/100 g dietary fibre) and oat bran flours
(78 g/100 g dietary fibre) were purchased from Piko Whoolefoods
(Christchurch, New Zealand).