Potential seaweed-based food ingredients to inhibit lipid oxidation in fish-oil-enriched mayonnaise
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Brown seaweed Fucus vesiculosus has a high potential as a source of natural antioxidants due to a high diversity of bioactive compounds in its composition. In this study, four extracts were characterized with respect to composition of bioactive compounds, in vitro antioxidant properties and their partitioning between water and octanol. Additionally, the antioxidant activity of the extracts was evaluated in a fish-oil-enriched mayonnaise. Acetone and ethanol were found to extract the highest amount of phenolic compounds and carotenoids. Water used as extraction solvent, extracted some phenolic compounds but also higher amount of metals and chlorophyll derivates. It was proposed that extracts with high phenolic content and low iron content, such as the acetone and ethanol extract, would have the highest potential as antioxidants in foods. This was confirmed in the storage trial, where these extracts showed higher antioxidant activity.
KeywordsBrown algae Phlorotannins n-3 LC-PUFA Pigments Food emulsions Lipid oxidation Mayonnaise Fucus vesiculosus
Acetone extract from F. vesiculosus
Ethanol extract from F. vesiculosus
- F. vesiculosus
High-pressure liquid chromatography
Long-chain polyunsaturated fatty acids
Octanol/water partitioning coefficient
- o/w emulsion
Principal component analysis
Total phlorotannin content
Aqueous extract from old parts of the F. vesiculosus leaf
Aqueous extract from young parts of the F. vesiculosus leaf
We thank Inge Holmberg, Lis Berner and Thi Thu Trang Vu for their skilful work in the laboratory and Maritex (subsidiary of TINE BA, Norway) for providing the fish oil for the study. We also thank Birgitte Koch Herbst and Jens Jørgen Sloth for their help with the metal analysis and Hamed Safafar who modified and optimized the HPLC method for pigment measurement. The study is part of the project “Novel bioactive seaweed based ingredients and products” financed by Nordic Innovation. The work was done in collaboration with Matís in Iceland as part of work package 2 “Characterization of ingredients”.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
Compliance with Ethics Requirements
This article does not contain any studies with human or animal subjects.
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