A disposable, small scale and low cost electrochemical "wall-jet" flow-cell was build up together with a graphite lead mounted onto a pencil holder able to modulate the current response by the control of the surface area of the electrode. The total phenolic content of different types of tea infusions was determined and compared with the conventional Folin-Ciocolteau method. An index of antioxidant power was also proposed and data were compared with those obtained by the DPPH* assay.
A low-cost and low-tech electrochemical flow system for the evaluation of total phenolic content and antioxidant power of tea infusions / S. Buratti, M. Scampicchio, G. Giovanelli, S. Mannino. - In: TALANTA. - ISSN 0039-9140. - 75:1(2008), pp. 312-316.
Titolo: | A low-cost and low-tech electrochemical flow system for the evaluation of total phenolic content and antioxidant power of tea infusions |
Autori: | BURATTI, SUSANNA (Primo) SCAMPICCHIO, MATTEO MARIO (Secondo) GIOVANELLI, GABRIELLA (Penultimo) MANNINO, SAVERIO (Ultimo) |
Parole Chiave: | Antioxidant power; Flow injection analysis; Pencil graphite electrode; Phenolic acids; Tea infusion |
Settore Scientifico Disciplinare: | Settore AGR/15 - Scienze e Tecnologie Alimentari |
Data di pubblicazione: | 2008 |
Rivista: | |
Tipologia: | Article (author) |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.talanta.2007.11.014 |
Appare nelle tipologie: | 01 - Articolo su periodico |