title: Behaviour of cyanidin-3-glucoside, β-lactoglobulin and polysaccharides nanoparticles in bulk and oil-in-water interfaces.
abstract: Particle size distributions as well the interfacial and rheological properties of the films at the oil/water interface were used to study the effect of the interacting system between β-lactoglobulin, cyanidin-3-glucoside and pectin or chitosan in buffer solutions. The particles obtained were smaller with cy-3-gluc-β-lg-pectin and had reduced polydispersity with cy-3-gluc-β-lg-chitosan. Based on time dependent surface pressure results, β-lg-pectin mixtures showed a slower increase at the beginning of the measurement, while β-lg-chitosan mixtures showed no differences with β-lg alone. Contrarily, dilatational properties increased for ternary chitosan mixtures, but they remained similar to the pure protein in ternary pectin mixtures. Cy-3-gluc interfacial properties were reduced by the presence of pectin and chitosan. The interactions between cy-3-gluc and the biopolymers that have been selected in the present work resulted in a lower content of free polyphenol, reduced antioxidant properties as well as free β-lg. The impact of this effect was more relevant when pectin was used.
authors.affiliation: Centro de Biotecnologia e Química Fina-Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Arquiteto Lobão Vital, 4202-401 Porto, Portugal.
authors.forename: Ana
authors.initials: A
authors.lastname: Oliveira
authors.affiliation: Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina.
authors.forename: Víctor M Pizones
authors.initials: VM
authors.lastname: Ruiz-Henestrosa
authors.affiliation: Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina.
authors.forename: Mariana
authors.initials: M
authors.lastname: von Staszewski
authors.affiliation: Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina.
authors.forename: Ana M R
authors.initials: AM
authors.lastname: Pilosof
authors.affiliation: Centro de Biotecnologia e Química Fina-Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Arquiteto Lobão Vital, 4202-401 Porto, Portugal. Electronic address: pintado@porto.ucp.pt.
authors.forename: Manuela
authors.initials: M
authors.lastname: Pintado
mesh_terms: D000872:Anthocyanins / Q000737:chemistry*; D000975:Antioxidants / Q000737:chemistry; D048271:Chitosan / Q000737:chemistry; D000067493:Dynamic Light Scattering; D005960:Glucosides / Q000737:chemistry*; D007782:Lactoglobulins / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D009821:Oils / Q000737:chemistry*; D010316:Particle Size; D010368:Pectins / Q000737:chemistry; D011134:Polysaccharides / Q000737:chemistry*; D013499:Surface Properties; D014867:Water / Q000737:chemistry*
chemical_list: D000872:Anthocyanins; D000975:Antioxidants; D005960:Glucosides; D007782:Lactoglobulins; D009821:Oils; D011134:Polysaccharides; C462279:cyanidin-3-O-beta-glucopyranoside; D014867:Water; D010368:Pectins; D048271:Chitosan
keywords: Chitosan; Cyanidin-3-glucoside; Interactions; Oil/water interface; Pectin; β-Lactoglobulin