Abstract
This study aimed to investigate the impact of fruit preloads on the acute postprandial glycemic response (PGR) and satiety response of a rice meal in healthy female subjects based on iso-carbohydrate (IC) and hyper-carbohydrate (HC) contents, respectively. The IC test meals including (1) rice preload (R + 35R), (2) orange preload (O + 35R), (3) apple preload (A + 35R) and (4) pear preload (P + 35R), contained 50.0 g available carbohydrates (AC) where the preload contributed 15.0 g and rice provided 35.0 g. The HC meals included (1) orange preload (O + 50R), (2) apple preload (A+50R) and (3) pear preload (P + 50R), each containing 65.0 g AC, where the fruits contributed 15.0 g and rice provided 50.0 g. Drinking water 30 min before the rice meal was taken as reference (W + 50R). All the preload treatments, irrespective of IC or HC meals, resulted in remarkable reduction (p < 0.001) in terms of incremental peak glucose (IPG) and the maximum amplitude of glycemic excursion in 180 min (MAGE0–180), also a significant decrease (p < 0.05) in the area of PGR contributed by per gram of AC (AAC), compared with the W + 50R. Apple elicited the lowest PGR among all test meals, as the A + 35R halved the IPG and slashed the incremental area under the curve in 180 min (iAUC0–180) by 45.7%, while the A + 50R reduced the IPG by 29.7%, compared with the W + 50R. All the preload meals and the reference meal showed comparable self-reported satiety in spite of the difference in AC. In conclusion, pre-meal consumption of three fruits effectively curbed post-meal glycemia even in the case of a 30% extra carbohydrate load.
Highlights
White rice, a high glycemic index (GI) food [1,2], is the most popular staple food inAsian cultures
There was no significant difference in baseline (i.e., 0 min) blood glucose between all the test meals
The postprandial glycemic response (PGR) pattern of preload meals was characterized by double small peaks instead of one sharp peak in the case of the W + 50R
Summary
A high glycemic index (GI) food [1,2], is the most popular staple food inAsian cultures. A high glycemic index (GI) food [1,2], is the most popular staple food in. Intake of high GI staple foods such as white rice may lead to large postprandial glycemic fluctuation [3] even in healthy people [4]. Results from several metaanalyses suggested that a positive association between the consumption of white rice and the prevalence of type 2 diabetes [5,6]. Increasing evidence indicated that some macronutrients preload could stabilize postprandial glycemic response (PGR) and improve HbA1c in long-term treatments [7,8,9,10,11]. Whey protein preload could blunt the postprandial glucose excursion partly by enhancing the insulin response and slowing gastric emptying [8,12,13]. A few studies suggested that pre-meal consumed carbohydrates exerted a hypoglycemic effect as well, such as small doses of fructose [14], glucose [15] and mixed glucose–fructose solution [16]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
