title: Ultra-High Pressure Homogenization improves oxidative stability and interfacial properties of soy protein isolate-stabilized emulsions.
abstract: Ultra-High Pressure Homogenization (100-300MPa) has great potential for technological, microbiological and nutritional aspects of fluid processing. Its effect on the oxidative stability and interfacial properties of oil-in-water emulsions prepared with 4% (w/v) of soy protein isolate and soybean oil (10 and 20%, v/v) were studied and compared to emulsions treated by conventional homogenization (15MPa). Emulsions were characterized by particle size, emulsifying activity index, surface protein concentration at the interface and by transmission electron microscopy. Primary and secondary lipid oxidation products were evaluated in emulsions upon storage. Emulsions with 20% oil treated at 100 and 200MPa exhibited the most oxidative stability due to higher amount of oil and protein surface load at the interface. This manuscript addresses the improvement in oxidative stability in emulsions treated by UHPH when compared to conventional emulsions.
authors.affiliation: Centre Especial de Recerca Planta de Tecnologia dels Aliments (CERPTA), XaRTA, TECNIO, MALTA-Consolider, Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Spain.
authors.forename: C
authors.initials: C
authors.lastname: Fernandez-Avila
authors.affiliation: Centre Especial de Recerca Planta de Tecnologia dels Aliments (CERPTA), XaRTA, TECNIO, MALTA-Consolider, Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Spain. Electronic address: toni.trujillo@uab.es.
authors.forename: A J
authors.initials: AJ
authors.lastname: Trujillo
mesh_terms: D004655:Emulsions / Q000737:chemistry*; D007529:Isoflavones / Q000737:chemistry*; D008055:Lipids / Q000737:chemistry*; D010084:Oxidation-Reduction; D010316:Particle Size; D011312:Pressure; D013024:Soybean Oil / Q000737:chemistry*; D030262:Soybean Proteins / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D004655:Emulsions; D007529:Isoflavones; D008055:Lipids; D030262:Soybean Proteins; D014867:Water; D013024:Soybean Oil
keywords: Emulsion; Interfacial properties; Lipid oxidation; Soy protein; Ultra-High Pressure Homogenization