Oxidative Stability of Granola Bars Enriched with Multilayered Fish Oil Emulsion in the Presence of Novel Brown Seaweed Based Antioxidants

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–chitos...

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Published inJournal of agricultural and food chemistry Vol. 64; no. 44; pp. 8359 - 8368
Main Authors Hermund, Ditte B, Karadağ, Ayşe, Andersen, Ulf, Jónsdóttir, Rósa, Kristinsson, Hordur G, Alasalvar, Cesarettin, Jacobsen, Charlotte
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 09.11.2016
Subjects
Antioxidants - chemistry
Caseins - chemistry
Chitosan - chemistry
Emulsions - chemistry
Fatty Acids - analysis
Fatty Acids - chemistry
Fish Oils - chemistry
Fucus
Functional Food - analysis
Gas Chromatography-Mass Spectrometry
Humans
Lipid Peroxides - analysis
Oxidation-Reduction
Plant Extracts - chemistry
Seaweed - chemistry
Taste
Tocopherols - analysis
Volatile Organic Compounds - analysis
Fucus vesiculosus
omega-3
multilayered emulsion
confocal light scanning microscopy
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Summary: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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0021-8561
1520-5118
DOI:10.1021/acs.jafc.6b03454