• Marcelo Victor Teixeira da Silva, Shirleide Santos Nunes, Walyson Coelho Costa, Sandra Monetti Dumont Sanches, SilveiraAna Letícia MalheirosALMDepartment of Nutrition, Nursing School, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil., Álida Rosária Silva Ferreira, Roberta Silva Filha, CorreiaMaria Isabel T DMITDDepartment of Surgery, Medical School, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil., Luciene das Graças Mota, and GenerosoSimone de VasconcelosSVDepartment of Nutrition, Nursing School, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil. Electronic address: simonenutufmg@gmail.com..
• Department of Food, Faculty of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
• Nutrition. 2022 Oct 1; 102: 111737.

ObjectivesDietary fibers, such as fructooligosaccharide (FOS) and partially hydrolyzed guar gum (PHGG) have several gastrointestinal functions. The aims of this study were to evaluate the effect of acute ingestion of FOS and PHGG on the percentage of gastric emptying and small intestinal transit and to evaluate the effect of these dietary fibers on the levels of intestinal hormones-active glucagon-like peptide-1, pancreatic polypeptide, and gastric inhibitory peptide-and their effect on feelings of hunger and satiety and the desire to eat.MethodsIn this crossover, randomized controlled clinical trial, we compared the effects of these two fibers on gastrointestinal transit. The tests were performed using scintigraphy. On three different days, healthy participants consumed a test meal containing 20 g of digestible maltodextrin (placebo), 20 g of FOS, or 20 g of PHGG.ResultsThe gastric emptying of the FOS-based diet (84.2 ± 9.4%) within 2 h was statistically increased compared with the placebo and PHGG-based diets (78 ± 10.2% and 74 ± 15.3%, respectively; P < 0.05). However, a reduction in small intestinal transit was observed after consumption of both FOS- and PHGG-based diets (28.5 ± 15.56% and 24.2 ± 13.7%, respectively) compared with the placebo diet (41.20 ± 15.4%; P < 0.05). There were no changes in the levels of intestinal hormones, feeling of hunger and satiety, or desire to eat after consuming the three diets (P > 0.05).ConclusionThe acute intake of FOS increased gastric emptying, whereas both FOS and PHGG reduced small intestine transit without altering the levels of intestinal hormones, hunger feelings and satiety, or the desire to eat.Copyright © 2022 Elsevier Inc. All rights reserved.

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