In relation to the risk factors mentioned, dietary fiber appears as an interesting ingredient providing benefits such as decrease of intestinal transit time and increase of stools bulk, being fermentable by colonic microflora, reduction of total and/or LDL cholesterol levels of blood, reduction of post-prandial blood glucose level (FAO/ WHO, 2009). Resistant starch (RS) is not digested allowing fermentation in the colon, so it can be considered a kind of dietary fiber. Four types of RS have been described: RS1, that is physically inaccessible to digestion such as in grains or seeds; RS2, which its granules are structured in a way that does not allow enzymes to hydrolyze it; RS3 is the retrograded starch formed when foods are cooked and cooled; RS4 is a chemically-modified starch (Fuentes-
Zaragoza, Riquelme-Navarrete, Sanchez-Zapata, &Perez-Alvarez,2010). High-amylose maize starch, defined as RS2, can be obtained from a specific hybrid of corn which naturally has high amylose content. Since it is a fine white powder, its sensory attributes like color and taste are more appreciated by consumers when compared with traditional sources of dietary fiber (FuentesZaragosa et al.,2010). However, its addition to bread dough produces gluten dilution yielding dough with poor rheological properties and baking performance (Sanchezetal.,2014), and bread with poor texture properties (Almeida, Chang, &Steel, 2013), which.limits its application. Tominimize this effect additives such as enzymes are used.
In relation to the risk factors mentioned, dietary fiber appears as an interesting ingredient providing benefits such as decrease of intestinal transit time and increase of stools bulk, being fermentable by colonic microflora, reduction of total and/or LDL cholesterol levels of blood, reduction of post-prandial blood glucose level (FAO/ WHO, 2009). Resistant starch (RS) is not digested allowing fermentation in the colon, so it can be considered a kind of dietary fiber. Four types of RS have been described: RS1, that is physically inaccessible to digestion such as in grains or seeds; RS2, which its granules are structured in a way that does not allow enzymes to hydrolyze it; RS3 is the retrograded starch formed when foods are cooked and cooled; RS4 is a chemically-modified starch (Fuentes-Zaragoza, Riquelme-Navarrete, Sanchez-Zapata, &Perez-Alvarez,2010). High-amylose maize starch, defined as RS2, can be obtained from a specific hybrid of corn which naturally has high amylose content. Since it is a fine white powder, its sensory attributes like color and taste are more appreciated by consumers when compared with traditional sources of dietary fiber (FuentesZaragosa et al.,2010). However, its addition to bread dough produces gluten dilution yielding dough with poor rheological properties and baking performance (Sanchezetal.,2014), and bread with poor texture properties (Almeida, Chang, &Steel, 2013), which.limits its application. Tominimize this effect additives such as enzymes are used.
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