Consumption of cross-linked resistant starch (RS4XL) on glucose and insulin responses in humans

Abstract

Objective. The objective was to compare the postprandial glycemic and insulinemic responses to nutrition bars containing either cross-linked RS type 4 (RS 4 XL) or standard wheat starch in normoglycemic adults (n = 13; age = 27 ± 5 years; BMI = 25 ± 3 kg/ m 2). Methods. Volunteers completed three trials during which they consumed a glucose beverage (GLU), a puffed wheat control bar (PWB), and a bar containing cross-linked RS4 (RS4XL) matched for available carbohydrate content. Serial blood samples were collected over two hours and glucose and insulin concentrations were determined and the incremental area under the curve (iAUC) was calculated. Results. The RS 4 XL peak glucose and insulin concentrations were lower than the GLU and PWB (P