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.

A low-cost and low-tech electrochemical flow system for the evaluation of total phenolic content and antioxidant power of tea infusions

S. Buratti
Primo
;
M. Scampicchio
Secondo
;
G. Giovanelli
Penultimo
;
S. Mannino
Ultimo
2008

Abstract

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.
Antioxidant power; Flow injection analysis; Pencil graphite electrode; Phenolic acids; Tea infusion
Settore AGR/15 - Scienze e Tecnologie Alimentari
2008
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/36559
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