title: Oat fiber as a carrier for curcuminoids.
abstract: The curcuminoid-carrying potential of oat fiber was examined as a potential route to overcome the low aqueous solubility of curcuminoids. Aqueous dispersions of oat fiber were mixed with curcuminoids solubilized in ethanol to obtain curcuminoids-oat fiber (1% w/w) dispersions in aqueous ethanol (2% v/v). Centrifugation of the curcuminoids-oat fiber dispersions resulted in a supernatant (95.3% w/w: 0.11% w/w protein, 0.17% w/w β-glucan) and precipitate (4.74% w/w: 0.18% w/w protein, 0.11% w/w β-glucan) with the curcuminoids being almost equally partitioned into both fractions. Curcuminoids solubility in the supernatant was markedly greater than that in aqueous ethanol and water. The curcuminoids were in the amorphous state in the precipitated fraction and were more stable to degradation than the curcuminoids in the supernatant. These studies show the potential of oat fiber as a carrier for curcuminoids into functional foods.
authors.affiliation: ARC Dairy Innovation Hub, Department of Chemical and Biomolecular Engineering and ‡The Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne , Parkville, Vic 3010, Australia.
authors.forename: Sara
authors.initials: S
authors.lastname: Sayanjali
authors.forename: Luz
authors.initials: L
authors.lastname: Sanguansri
authors.forename: Roman
authors.initials: R
authors.lastname: Buckow
authors.forename: Sally
authors.initials: S
authors.lastname: Gras
authors.forename: Mary Ann
authors.initials: MA
authors.lastname: Augustin
mesh_terms: D018554:Avena / Q000737:chemistry*; D003474:Curcumin / Q000737:chemistry*; D004043:Dietary Fiber / Q000032:analysis*; D004337:Drug Carriers / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*; D012995:Solubility; D047071:beta-Glucans / Q000737:chemistry
chemical_list: D004043:Dietary Fiber; D004337:Drug Carriers; D010936:Plant Extracts; D047071:beta-Glucans; D003474:Curcumin
keywords: beta-glucan; carrier; curcumin; oat fiber; solubility