title: Effects of barley β-glucan-enriched flour fractions on the glycaemic index of bread.
abstract: The aim of this research was to evaluate β-glucan-enriched flours, obtained from barleys with either normal or waxy starch, for their effects on the glycaemic index (GI) and the quality of bread. Rheological results confirmed that when barley flour was included in the dough the overall quality of bread slightly worsened. However, positive consequences on glycaemia were obtained with the normal starch barley: the GI of all-wheat bread (82.8 ± 7.2) was significantly reduced (57.2 ± 7.9) when 40% of wheat flour was substituted with β-glucan-enriched barley flour (6.0% ± 0.1 β-glucan in the final flour blend). In contrast, this positive effect was significantly reduced (GI: 70.1 ± 9.1) when 40% of wheat flour was substituted with the β-glucan-enriched flour of a waxy barley (CDC Alamo; 6.6 ± 0.2 β-glucan in the final flour blend), suggesting that the ability of β-glucans to lower the GI was affected by the barley starch-type.
authors.affiliation: C.R.A.-GPG, Fiorenzuola d'Arda (PC), Italy. fin.fra@libero.it
authors.forename: Franca
authors.initials: F
authors.lastname: Finocchiaro
authors.forename: Barbara
authors.initials: B
authors.lastname: Ferrari
authors.forename: Alberto
authors.initials: A
authors.lastname: Gianinetti
authors.forename: Francesca
authors.initials: F
authors.lastname: Scazzina
authors.forename: Nicoletta
authors.initials: N
authors.lastname: Pellegrini
authors.forename: Rosita
authors.initials: R
authors.lastname: Caramanico
authors.forename: Claudia
authors.initials: C
authors.lastname: Salati
authors.forename: Vigen
authors.initials: V
authors.lastname: Shirvanian
authors.forename: Antonio Michele
authors.initials: AM
authors.lastname: Stanca
mesh_terms: D001786:Blood Glucose / Q000378:metabolism*; D001939:Bread / Q000032:analysis* / Q000592:standards; D004032:Diet; D002523:Edible Grain / Q000737:chemistry; D005433:Flour / Q000032:analysis*; D005527:Food, Fortified / Q000032:analysis*; D038321:Glycemic Index / Q000187:drug effects*; D001467:Hordeum / Q000737:chemistry*; D006801:Humans; D012212:Rheology; D013213:Starch / Q000737:chemistry; D014908:Triticum; D047071:beta-Glucans / Q000494:pharmacology*
chemical_list: D001786:Blood Glucose; D047071:beta-Glucans; D013213:Starch