Investigation of process and product parameters on physical attributes, resistant starch and in‐vitro starch digestibility of modified rice flour based extruded snacks

Dietary fiber content (as non-starch polysaccharides, NSP) and in vitro starch digestibility of legumes (beans, lentils, chickpeas and peas) present in the Spanish diet were determined. Raw, boiled and industrially processed legumes were analyzed, as well as legume dishes prepared according to tradi tional recipes or commercial canned meals. A reduction of total NSP was observed in cooked prepa rations probably due to the presence of other food ingredients. Soluble NSP increased in industrially processed legumes at the expense of the insoluble fraction. Significant amounts of resistant starch (RS) were detected in processed legumes. Industrial processing seemed to result in an increased in vitro starch digestibility with a higher starch digestion rate index (SDRI) in comparison with domes tic processing. Rapidly available glucose (RAG) in processed legumes, as a predictor of their poten tial glycemic response, showed differences depending on the type of legume and treatment. Gener ally pulses consumed as home-made meals had lower RAG values.

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Starch digestibility and sensory acceptance of gluten free foods prepared with tannin sorghum flour

Pesquisa Agropecuária Brasileira ◽

10.1590/s1678-3921.pab2019.v54.01205 ◽

2019 ◽

Vol 54 ◽

Author(s):

Raquel Rainier Alves Soares ◽

Christiane Mileib Vasconcelos ◽

Mariane Verônica de Oliveira ◽

Valéria Paula Rodrigues Minim ◽

Valéria Aparecida Vieira Queiroz ◽

...

Keyword(s):

Human Health ◽

Resistant Starch ◽

Starch Digestibility ◽

Gluten Free ◽

In Vitro Starch Digestibility ◽

Sensory Acceptability ◽

Sensory Acceptance ◽

Sorghum Flour ◽

Slowly Digestible Starch

Abstract: The objective of this work was to develop gluten-free cookies and savory fried pies using tannin-rich sorghum (Sorghum bicolor) flour, to evaluate their in vitro starch digestibility, and to verify how knowledge of sorghum benefits may contribute to the sensory acceptability of both products. The contents of rapidly digestible starch, slowly digestible starch, and resistant starch were determined. Sensory acceptance was evaluated in two sessions: one without information on sorghum benefits to human health; and another where this information was presented. The resistant starch and slowly digestible starch contents of the cookies (5.07 and 16.22%, respectively) were about twice those of the savory fried pies (2.54 and 8.89%, respectively), whereas the opposite was observed for the rapidly digestible starch contents (9.89 and 19.65%, respectively). The cookies and savory fried pies were sensorially accepted, with a significant increase in the means of the sensory scores after the information on sorghum benefits was disclosed. Therefore, gluten-free cookies and savory fried pies prepared with tannin sorghum flour have a great commercial potential, shown by the good sensory acceptance and by the slowly digestible starch and resistant starch contents of these products.

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