title: A low-cost and low-tech electrochemical flow system for the evaluation of total phenolic content and antioxidant power of tea infusions.
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.
authors: University of Milan, Department of Food Science and Technology, Via Celoria, 2 20133 Milan, Italy.
authors: Susanna
authors: S
authors: Buratti
authors: Matteo
authors: M
authors: Scampicchio
authors: Gabriella
authors: G
authors: Giovanelli
authors: Saverio
authors: S
authors: Mannino
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D004563:Electrochemistry / Q000191:economics / Q000295:instrumentation* / Q000379:methods*; D004566:Electrodes; D010636:Phenols / Q000737:chemistry*; D018515:Plant Leaves; D013662:Tea / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D010636:Phenols; D013662:Tea