title: Enzymatic reverse FIA method for total phenols determination in urine samples.
abstract: A reverse flow injection spectrophotometric enzymatic method is proposed to quantify total phenols in urine samples. The polyphenol oxidase (PPO; EC 1.14.18.1) obtained as a crude extract from sweet potato root (Ipomoea batatas) was used as enzymatic catalyze. The detection limit, the sample throughput and relative standard deviation were 7.7mgl(-1) of total phenols, 49h(-1) and 0.9%, respectively. The method was applied to real samples and a recovery study was carried out in order to its validation.
authors.affiliation: FIA Laboratory, Department of Chemistry, Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahía Blanca, Buenos Aires, Argentina.
authors.forename: Marcos
authors.initials: M
authors.lastname: Grünhut
authors.forename: Miriam E
authors.initials: ME
authors.lastname: Palomeque
authors.forename: Adriana G
authors.initials: AG
authors.lastname: Lista
authors.forename: Beatriz S Fernández
authors.initials: BS
authors.lastname: Band