title: Improved efficiency of brewer's spent grain arabinoxylans by ultrasound-assisted extraction.
abstract: Arabinoxylan (AX) rich extracts from brewer's spent grain (BSG) were produced by the application of ultrasound-assisted extraction (UAE) and conventional alkaline extraction (AKE). UAE and AKE were optimised for the production of the highest yield of ethanol insoluble material using response surface methodology (RSM). The efficiency of UAE was established by the significant reduction of time (7h to 25 min) and energy when compared to AKE, to recover similar amounts of AX (60%) from BSG, leading to the production of starch-free AX-rich extracts.
authors.affiliation: School of Food Science and Environmental Health, College of Sciences and Health, Dublin Institute of Technology, Cathal Brugha St., Dublin 1, Ireland. Electronic address: sofiafreis@gmail.com.
authors.forename: Sofia F
authors.initials: SF
authors.lastname: Reis
authors.affiliation: QOPNA, Departamento de Química, Universidade de Aveiro, 3810-193 Aveiro, Portugal. Electronic address: ecoelho@ua.pt.
authors.forename: Elisabete
authors.initials: E
authors.lastname: Coelho
authors.affiliation: QOPNA, Departamento de Química, Universidade de Aveiro, 3810-193 Aveiro, Portugal. Electronic address: mac@ua.pt.
authors.forename: Manuel A
authors.initials: MA
authors.lastname: Coimbra
authors.affiliation: School of Food Science and Environmental Health, College of Sciences and Health, Dublin Institute of Technology, Cathal Brugha St., Dublin 1, Ireland. Electronic address: nissreen.abughannam@dit.ie.
authors.forename: Nissreen
authors.initials: N
authors.lastname: Abu-Ghannam
mesh_terms: D002236:Carbohydrate Conformation; D005591:Chemical Fractionation / Q000379:methods*; D002523:Edible Grain / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D010936:Plant Extracts / Q000737:chemistry*; D000069453:Ultrasonic Waves; D014990:Xylans / Q000737:chemistry*
chemical_list: D010936:Plant Extracts; D014990:Xylans; C085118:arabinoxylan
keywords: Arabinoxylans; Brewer’s spent grain; RSM; Ultrasound-assisted extraction