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Parameters controlling the glycaemic response to breads

  • Anthony Fardet (a1), Fanny Leenhardt (a1), Delphine Lioger (a1), Augustin Scalbert (a1) and Christian Rémésy (a1)...
Abstract
Abstract

Bread is one of the most widely consumed staple foods worldwide. White-wheat bread, largely consumed in France, is made from highly refined flour, which leads to a low nutrient density. Due to a highly porous structure and gelatinised starch, it is easily broken down during digestion, leading to a rapid increase of glucose released into the bloodstream. Low glycaemic responses are considered favourable to health, especially against a background of diabetes. Literature reports show that selection of raw material is an essential factor in decreasing the glycaemic index (GI) of white bread. There are two means of decreasing the rate of starch degradation: either (i) slowing gastric emptying rate and/or glucose diffusion–absorption through the intestinal mucosa, which can be achieved by incorporating soluble fibre or organic acid in bread, or (ii) limiting starch accessibility to α-amylase by using high-amylose cereal varieties and/or incorporating intact cereal grains. Studies on cereal products show that preservation of the food structure during digestion seems to be a more important GI-reducing factor than the degree of starch crystallinity or the presence of soluble fibre. Thus, we should look to produce bread with a more compact food structure or higher density, which is the case in leavened wholewheat bread or bread with intact cereal grains. The baking process should also be improved to achieve this goal, by using, for example, a reduced kneading time or less yeast than usual.

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Copyright
Corresponding author
*Corresponding author: Dr Anthony Fardet, fax +33 47 3 62 46 38, email afardet@clermont.inra.fr
Linked references
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This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

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Nutrition Research Reviews
  • ISSN: 0954-4224
  • EISSN: 1475-2700
  • URL: /core/journals/nutrition-research-reviews
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