Journal
FOODS
Volume 10, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/foods10050908
Keywords
resistant starch; hydrolysis index; dietary fibre; pasta; annealing
Categories
Funding
- 5 x 1000-Dichiarazione 2019-Universita Cattolica del Sacro Cuore, Largo Agostino Gemelli, Milano, MI, Italy
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By adding annealed sorghum starch (annRS) into gluten-free pasta, the total dietary fiber and resistant starch contents can be increased, while influencing cooking characteristics and starch hydrolysis index, but having a slight impact on sensory scores.
Gluten-free (GF) pasta samples containing rice flour replaced with 0, 5, 10, 15 g/100 g (w/w) of a resistant starch ingredient from annealed sorghum starch (annRS) were formulated. The highest total dietary fiber and RS contents (p < 0.05) were measured in uncooked pasta with 15 g/100 g of annRS addition (15-annRS). After cooking, the 15-annRS pasta was characterized by an RS content of 5.8 g/100 g dry matter, confirming the thermal resistance of annRS. The use of annRS positively influenced the optimal cooking time, the cooking loss, the firmness, and the stickiness of the cooked samples, with not remarkably change in color after cooking. The starch hydrolysis index values decreased as the level of annRS increased. Despite a significant decrease in the overall sensory with increasing levels of annRS, all samples were characterized by a value > 5, which is considered the limit of acceptability. The use of annRS in GF pasta up to 15 g/100 g can contribute to creating GF products with high total dietary fiber content, slowly digestible starch properties, and without drastically compromising the sensory attributes.
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