2.9. Test meals
The test meals consisted of 50 g of available carbohydrate from freshly baked control white bread (CON), white bread with added GTE (0.4% of loaf weight in g) or white bread with added BAO (1.88% of loaf weight in g), and 250 mL of still water.
This equated to 103.61 g CON bread, 104.16 g GTE bread with a total of 96.33 mg added polyphenols, and 106.97 g BAO bread with 61.24 mg total added polyphenols. Volunteers were instructed to consume the test meals at a comfortable pace within 15 minutes.
The extracts used in this part of the study were the optimal doses/extracts for reducing starch digestion in vitro (specifically RDS) and resulting sugar release from white bread.