Determination of Glycemic Index and Glycemic Load of Cereal Fiber Powder

This study choosed good health, aged 18 \~ 25, physical standard, the glucose tolerance test normal adults 12, oral glucose (reference) respectively in different periods, the valley of fiber powder upgrade formula, perfect meals, by extraction shu cereal bars, light appearance suits (by extraction shu compound dietary fiber powder, feeding combination 1:1) and 17 extraction enzyme 6 kinds of food, Venous blood was collected 15, 30, 45, 60, 90 and 120 min before and after oral administration respectively. Blood was collected for 7 times with 2mL each. The plasma is then separated to determine glucose levels. Blood glucose was measured within 3 h. With glucose as the reference, food glycemic index (GI) was calculated using the internationally used Wolever method. Time was taken as abscissa and blood glucose value at each time point was taken as ordinate to prepare the blood glucose response curve of each food tested after eating. The elevated glycemic area (AUC) under the glycemic curve was calculated geometrically, and the food GI and glycemic load (GL) values were calculated according to the following formula: GI value = (2 h post-meal blood glucose AUC of the tested food / 2 h post-meal glucose glucose AUC of the same amount of carbohydrate)×100, GL=GI\*M(100g of the actual available carbohydrate of a food)/100.