Glycemic and Insulinemic Responses of Healthy Humans to a Nutrition Bar with or without Added Fibersym ® RW, a Cross-Linked Phosphorylated RS4-Type Resistant Wheat Starch

Trevor J. Steele (), Catherine C. Steele, Clodualdo C. Maningat, Paul A. Seib, Mark D. Haub and Sara K. Rosenkranz
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Trevor J. Steele: Department of Food, Nutrition, Dietetics and Health, Kansas State University, Manhattan, KS 66506, USA
Catherine C. Steele: Department of Food, Nutrition, Dietetics and Health, Kansas State University, Manhattan, KS 66506, USA
Clodualdo C. Maningat: MGP Ingredients Inc., Atchison, KS 66002, USA
Paul A. Seib: Grain Science and Industry Emeritus, Kansas State University, Manhattan, KS 66506, USA
Mark D. Haub: Department of Food, Nutrition, Dietetics and Health, Kansas State University, Manhattan, KS 66506, USA
Sara K. Rosenkranz: Department of Kinesiology and Nutrition Sciences, University of Nevada, Las Vegas, NV 89154, USA

IJERPH, 2022, vol. 19, issue 21, 1-11

Abstract: The current study compared postprandial glycemic and insulinemic responses to four nutrition bars containing two different doses of resistant starch type-4. Normoglycemic adults ( n = 17) completed six treatments, consuming either 50 g or 30 g digestible carbohydrate as: dextrose beverages (DEX), control puffed wheat bars (PWB), or RS4 test bars (RS4). Glucose (mg/dL) and insulin (µIU/mL) were measured at baseline and 10, 20, 30, 60, 90, and 120 min. There was a main effect of dose and treatment on glucose incremental area under the curve (iAUC, ps < 0.001), such that RS4 (50 g: 941, 95% confidence interval (CI): 501, 1519; 30 g: 481, 95% CI: 186, 914) was lower than PWB (50 g: 1746, 95% CI: 1109, 2528; 30 g: 693, 95% CI: 331, 1188) and DEX (50 g: 1940, 95% CI: 1249, 2783; 30 g:1432, 95% CI: 883, 2114). There was a main effect of dose and treatment on insulin iAUC ( ps < 0.001), such that RS4 (50 g: 1993, 95% CI: 1347, 2764; 30 g: 943, 95% CI: 519, 1493) was lower than PWB (50 g: 3501, 95% CI: 2625, 4502; 30 g: 1789, 95% CI: 1193, 256) and DEX (50 g: 3143, 95% CI: 2317, 4095; 30 g: 2184, 95% CI: 1519, 2970). Results demonstrate significantly lower glycemic and insulinemic responses following consumption of nutrition bars containing RS4, regardless of dose, when compared with puffed wheat bars and dextrose.

Keywords: resistant starch type-4; RS4; glycemic response; insulinemic response (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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