title: Integration of β-glucan fibre rich fractions from barley and mushrooms to form healthy extruded snacks.
abstract: β-glucan is a commonly researched plant cell wall component that when incorporated into food products has been associated with cholesterol and glycaemic response reductions. This study focusses on β-glucan rich fractions from barley and mushroom used in the production of extruded ready to eat snacks. Inclusion of barley β-glucan rich fractions and mushroom β-glucan fractions at 10 % levels increased the total dietary fibre content of extrudates compared to the control (P < 0.05). Product expansion increased with the introduction of both barley and mushroom fraction (P < 0.05) which in turn resulted in a reduction in product hardness (P < 0.05). In vitro digestion protocol illustrated that inclusion of barley and mushroom β-glucan rich fractions manipulated the starch digestibility profile and hence rate of glucose release during digestion compared to the control sample. This in turn resulted in a significant (P < 0.05) reduction in potential glycaemic response of the samples of between 20 and 25 % for barley β-glucan rich fractions and between 17 and 25 % for mushroom β-glucan rich fractions. We conclude that the inclusion of these fractions could be utilised by the food industry to manipulate the glycaemic response of extruded snack products.
authors.affiliation: Manchester Metropolitan University, Old Hall Lane, Manchester, UK.
authors.forename: Margaret A
authors.initials: MA
authors.lastname: Brennan
authors.forename: Emma
authors.initials: E
authors.lastname: Derbyshire
authors.forename: Brijesh K
authors.initials: BK
authors.lastname: Tiwari
authors.forename: Charles S
authors.initials: CS
authors.lastname: Brennan
mesh_terms: D000363:Agaricales / Q000737:chemistry*; D001786:Blood Glucose / Q000378:metabolism; D004032:Diet; D004040:Dietary Carbohydrates / Q000378:metabolism; D004043:Dietary Fiber / Q000032:analysis*; D005511:Food Handling / Q000379:methods; D038321:Glycemic Index; D006244:Hardness; D001467:Hordeum / Q000737:chemistry*; D006801:Humans; D062410:Snacks; D013213:Starch / Q000378:metabolism; D047071:beta-Glucans
chemical_list: D001786:Blood Glucose; D004040:Dietary Carbohydrates; D004043:Dietary Fiber; D047071:beta-Glucans; D013213:Starch