Postprandial glycaemic and insulinaemic responses to GM-resistant starch-enriched rice and the production of fermentation-related H2 in healthy Chinese adults

• Published in: British journal of nutrition 2010-04, Vol.103 (7), p.1029-1034
• Main Authors: Li, Min, Piao, Jian-Hua, Tian, Yuan, Li, Wei-Dong, Li, Ke-Ji, Yang, Xiao-Guang
• Format: Article
• Language: English
• Subjects: Adult; Biological and medical sciences; Blood; blood glucose; Blood Glucose - metabolism; Breath hydrogen; Breath Tests; Carbohydrates; chemical concentration; China; Chinese people; colon; Colon - metabolism; Cross-Over Studies; Diabetes; diet; dietary carbohydrate; Dietary Carbohydrates - administration & dosage; Dietary Carbohydrates - metabolism; Enriched foods; Feeding. Feeding behavior; Female; Fermentation; food intake; Food, Fortified; Food, Genetically Modified; fortified foods; Fundamental and applied biological sciences. Psychology; gas production (biological); Genetically altered foods; genetically modified foods; Glucose; glycemic effect; glycemic index; Glycemic Index - drug effects; GM rice; Human and Clinical Nutrition; human nutrition; Humans; hydrogen; Hydrogen - analysis; Hydrogen - metabolism; Insulin; Insulin - blood; insulin index; insulin secretion; insulinemia; Male; men; Nutrition research; Oryza - chemistry; Oryza - genetics; Oryza sativa; Postprandial Period; postprandial state; Reference Values; Resistant starch; Rice; Starch; Starch - administration & dosage; Starch - metabolism; Starch - pharmacology; Vertebrates: anatomy and physiology, studies on body, several organs or systems; women; Young Adult; Young adults
• ISSN: 0007-1145; 1475-2662
• DOI: 10.1017/S0007114509992820

Consumption of resistant starch (RS)-enriched foods is associated with decrease in the postprandial glycaemic and insulinaemic responses, accompanied by the production of fermentation-related gases in the large bowel. The present study aimed to determine the postprandial glycaemic and insulinaemic responses to the GM RS-enriched rice and the fermentation-related production of H2 in young and healthy Chinese adults. A total of sixteen young adults (nine men and seven women) were recruited and divided into three groups. Their postprandial glycaemic and insulinaemic responses to 40 g glucose, carbohydrates of RS or wild-type (WT) rice were tested by a crossover model with a washout period of 7 d. The concentrations of blood glucose and insulin as well as breath H2 were measured before and after food intake. Although the mean concentrations of fasting blood glucose, insulin and breath H2 were similar, consumption of the RS rice significantly decreased the values of glycaemic index (GI) and insulin index (II), as compared with the intake of WT rice (48·4 (sem 21·8) v. 77·4 (sem 34·9) for GI, 34·2 (sem 18·9) v. 54·4 (sem 22·4) for II, P