title: The effects of antioxidants and shelf life conditions on oxidation markers in a sunflower oil salad dressing emulsion (SOSDE).
abstract: The effects of levels of antioxidant [gallic acid or ethylene diamine tetraacetate (EDTA)] in a sunflower oil salad dressing emulsion (SOSDE) and shelf life affecting conditions on aroma, anisidine values (AV) and peroxide values (PV) were determined. Aroma differences between products with different concentrations of antioxidants were more apparent for ambient than accelerated stored SOSDEs. Aroma differences were more noted between SOSDEs with different antioxidants than antioxidant concentrations per se. PV differences between accelerated stored SOSDEs with high and low EDTA concentrations were found. AV differences existed between SOSDEs with different gallic acid concentrations for both storage conditions, and for accelerated stored SOSDEs with different EDTA concentrations. The accelerated storage model is more suitable for SOSDEs with metal chelator antioxidants e.g. EDTA, than free radical scavenging antioxidants e.g. gallic acid. PV, AV and aroma of accelerated stored SOSDEs do not clearly predict ambient shelf life.
authors.affiliation: Department of Food Science, University of Pretoria, Pretoria Private Bag X20, Hatfield 0002, South Africa; McCormick & Company Inc., 204 Wight Avenue, Hunt Valley, MD 21030, USA.
authors.forename: Jeanine
authors.initials: J
authors.lastname: Sainsbury
authors.affiliation: McCormick & Company Inc., 204 Wight Avenue, Hunt Valley, MD 21030, USA.
authors.forename: Roman
authors.initials: R
authors.lastname: Grypa
authors.affiliation: McCormick & Company Inc., 204 Wight Avenue, Hunt Valley, MD 21030, USA.
authors.forename: John
authors.initials: J
authors.lastname: Ellingworth
authors.affiliation: Department of Food Science, University of Pretoria, Pretoria Private Bag X20, Hatfield 0002, South Africa.
authors.forename: Kwaku G
authors.initials: KG
authors.lastname: Duodu
authors.affiliation: Department of Food Science, University of Pretoria, Pretoria Private Bag X20, Hatfield 0002, South Africa. Electronic address: riette.dekock@up.ac.za.
authors.forename: Henriëtta L
authors.initials: HL
authors.lastname: De Kock
mesh_terms: D000814:Aniline Compounds / Q000032:analysis; D000975:Antioxidants / Q000032:analysis*; D004492:Edetic Acid / Q000032:analysis; D004655:Emulsions; D061353:Food Storage; D005707:Gallic Acid / Q000032:analysis; D010084:Oxidation-Reduction; D010545:Peroxides / Q000032:analysis; D010938:Plant Oils / Q000737:chemistry*; D012903:Smell; D000074242:Sunflower Oil; D013649:Taste
chemical_list: D000814:Aniline Compounds; D000975:Antioxidants; D004655:Emulsions; D010545:Peroxides; D010938:Plant Oils; D000074242:Sunflower Oil; D005707:Gallic Acid; D004492:Edetic Acid
keywords: Accelerated shelf life; Antioxidant; Emulsion; Lipid oxidation; Pro-oxidant; Rancid; Sensory