title: Oxidative Stability of Granola Bars Enriched with Multilayered Fish Oil Emulsion in the Presence of Novel Brown Seaweed Based Antioxidants.
abstract: Fucus vesiculosus extracts that have both radical scavenging activity and metal chelating ability in vitro were used as natural antioxidant in granola bars enriched with fish oil emulsion by using primary and secondary emulsion systems stabilized by sodium caseinate alone and sodium caseinate-chitosan. The bars were stored at 20 °C and evaluated over a period of 10 weeks by measuring the development of primary and secondary oxidation products. The samples prepared with secondary emulsion system developed less oxidation products probably due to increased interfacial layer thickness that would act as a barrier to the penetration and diffusion of molecular species that promote oxidation. The positive charge of oil droplets in the secondary emulsion may also inhibit iron-lipid interaction through electrostatic repulsion. Additional protection against lipid oxidation was obtained when fish oil emulsions were added to the granola bars especially in combination with acetone and ethanol extracts of Fucus vesiculosus.
authors.affiliation: Division of Food Technology, National Food Institute, Technical University of Denmark , DK-2800 Kongens Lyngby, Denmark.
authors.forename: Ditte B
authors.initials: DB
authors.lastname: Hermund
authors.affiliation: Food Institute, TUBITAK Marmara Research Center , Gebze-Kocaeli, Turkey.
authors.forename: Ayşe
authors.initials: A
authors.lastname: Karadağ
authors.affiliation: Arla Strategic Innovation Centre, Arla Foods amba , DK-8220 Brabrand, Denmark.
authors.forename: Ulf
authors.initials: U
authors.lastname: Andersen
authors.affiliation: Matís ohf. , Vínlandsleid 12, 113 Reykjavík, Iceland.
authors.forename: Rósa
authors.initials: R
authors.lastname: Jónsdóttir
authors.affiliation: Matís ohf. , Vínlandsleid 12, 113 Reykjavík, Iceland.
authors.forename: Hordur G
authors.initials: HG
authors.lastname: Kristinsson
authors.affiliation: Food Institute, TUBITAK Marmara Research Center , Gebze-Kocaeli, Turkey.
authors.forename: Cesarettin
authors.initials: C
authors.lastname: Alasalvar
authors.affiliation: Division of Food Technology, National Food Institute, Technical University of Denmark , DK-2800 Kongens Lyngby, Denmark.
authors.forename: Charlotte
authors.initials: C
authors.lastname: Jacobsen
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D002364:Caseins / Q000737:chemistry; D048271:Chitosan / Q000737:chemistry; D004655:Emulsions / Q000737:chemistry; D005227:Fatty Acids / Q000032:analysis / Q000737:chemistry; D005395:Fish Oils / Q000737:chemistry*; D044645:Fucus; D055951:Functional Food / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D008054:Lipid Peroxides / Q000032:analysis; D010084:Oxidation-Reduction; D010936:Plant Extracts / Q000737:chemistry; D012624:Seaweed / Q000737:chemistry*; D013649:Taste; D024505:Tocopherols / Q000032:analysis; D055549:Volatile Organic Compounds / Q000032:analysis
chemical_list: D000975:Antioxidants; D002364:Caseins; D004655:Emulsions; D005227:Fatty Acids; D005395:Fish Oils; D008054:Lipid Peroxides; D010936:Plant Extracts; D055549:Volatile Organic Compounds; D048271:Chitosan; D024505:Tocopherols
keywords: Fucus vesiculosus; confocal light scanning microscopy; multilayered emulsion; omega-3