Gastric emptying and glycemic response after ingestion of mashed bean or potato flakes in composite meals

• Published in: The American journal of clinical nutrition Vol. 50; no. 6; pp. 1415 - 1419
• Main Authors: Torsdottir, I, Alpsten, M, Andersson, H, Schweizer, T F, Tölli, J, Würsch, P
• Format: Journal Article
• Language: English
• Published: Bethesda, MD Elsevier Inc 01-12-1989; American Society for Clinical Nutrition
• Subjects: Adult; AMIDON DE POMME DE TERRE; Biological and medical sciences; Blood Glucose - metabolism; Dietary Carbohydrates - pharmacology; DIGESTION; ESTOMAC; ESTOMAGO; Fabaceae; FECULA DE LA PAPA; Feeding. Feeding behavior; Food, Formulated; Fundamental and applied biological sciences. Psychology; Gastric Emptying - physiology; GLICEMIA; GLYCEMIE; HOMBRES; HOMME; Humans; Insulin - blood; INSULINA; INSULINE; Kinetics; Male; PHASEOLUS VULGARIS; Plants, Medicinal; Solanum tuberosum; Vertebrates: anatomy and physiology, studies on body, several organs or systems; Human; Potato; Pancreatic hormone; Diet; Starch; Digestive system; Gastric emptying; Digestion; Insulin; Glycemia; Bean
• ISSN: 0002-9165; 1938-3207
• DOI: 10.1093/ajcn/50.6.1415

Two meals of mashed-bean or potato flakes and meat were served in random order to six healthy male subjects to determine effects on gastric emptying and glycemic reactions. The meals had comparable physical appearance and contained similar amounts of digestible carbohydrate, fat, and protein. No difference in gastric emptying, recorded by gamma camera after mixing 51Cr with the meals, was found between the meals. The bean-flakes meal gave significantly lower blood glucose (p less than 0.01) and serum insulin (p less than 0.05) concentrations than did the potato-flakes meal. The overall blood glucose response, calculated as incremental area under the curves for 2 h, also differed between the meals (p less than 0.05) whereas the overall insulin response did not differ significantly. The low glycemic response after bean flakes could not be explained by the gastric emptying rate, which provides additional evidence for the slow digestion of bean starch in the small intestine.