title: Automated determination of total polyphenols in apple juice.
abstract: An automated method of total polyphenols analysis in apple juice using the Folin-Ciocalteu reagent is presented. Chlorogenic acid was selected as the standard since a similar kinetic behaviour, standard-sample, was observed. A straightforward method with good reproducibility (CV < 1%), sampling frequency (48 h-1) and correlation with the traditional batch method (r = 0.9924) is proposed.
authors.affiliation: Instituto de Experimentación y Promoción Agraria, Villaviciosa, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Mangas
authors.forename: B
authors.initials: B
authors.lastname: Suárez
authors.forename: D
authors.initials: D
authors.lastname: Blanco
mesh_terms: D001628:Beverages / Q000032:analysis*; D005419:Flavonoids; D017022:Flow Injection Analysis / Q000295:instrumentation / Q000592:standards*; D005638:Fruit / Q000737:chemistry*; D010636:Phenols / Q000032:analysis*; D011108:Polymers / Q000032:analysis*; D059808:Polyphenols; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D005419:Flavonoids; D010636:Phenols; D011108:Polymers; D059808:Polyphenols