title: Effects of juices enriched with xanthan and β-glucan on the glycemic response and satiety of healthy men.
abstract: This study compared the effects of 3 palatable juices enriched with different polysaccharides with a control nonenriched juice on glucose and insulin responses as well as on appetite sensations and determined whether the polysaccharide-induced viscosity contributed to the effects of enriched juices on these variables. Using a randomized crossover design, 14 healthy male subjects consumed 4 juices: 3 juices were enriched with either xanthan gum, β-glucan, or a mix of xanthan gum and β-glucan, and the control juice had no added polysaccharides. Viscosity was measured at a shear rate of 30 s(-1), which represented an approximation of the viscosity in the gastrointestinal tract. One-sided tests were used in this study. Compared with the control juice, the juice supplemented with the mix of xanthan gum and β-glucan and the juice enriched with β-glucan alone led to a significant attenuation of the incremental peak of glucose (-0.8 mmol·L(-1), p = 0.001; and -0.5 mmol·L(-1), p = 0.03; respectively). However, no difference between juices was found for the incremental area under the curve for glucose, insulin, and appetite sensations. At 30 s(-1), only juices enriched with either the β-glucan/xanthan mixture or β-glucan alone yielded viscosity values higher than 0.1 Pa·s. These results highlight that the consumption of a palatable juice enriched with β-glucan alone or in mixture with xanthan gum reduces the glucose peak response compared with a juice with no added polysaccharides. The viscosity at a shear rate of 30 s(-1) seems to be linked to this effect.
authors.affiliation: a Institute of Nutrition and Functional Foods, 2440 Hochelaga Boulevard, Laval University, Québec, QC G1V 0A6, Canada.
authors.forename: Julie
authors.initials: J
authors.lastname: Paquin
authors.forename: Alexandra
authors.initials: A
authors.lastname: Bédard
authors.forename: Simone
authors.initials: S
authors.lastname: Lemieux
authors.forename: Sasithorn
authors.initials: S
authors.lastname: Tajchakavit
authors.forename: Sylvie L
authors.initials: SL
authors.lastname: Turgeon
mesh_terms: D001786:Blood Glucose; D018592:Cross-Over Studies; D004040:Dietary Carbohydrates; D006801:Humans; D008297:Male; D019518:Postprandial Period; D012527:Satiation; D014783:Viscosity; D047071:beta-Glucans
chemical_list: D001786:Blood Glucose; D004040:Dietary Carbohydrates; D047071:beta-Glucans