title: Antioxidant activity prediction and classification of some teas using artificial neural networks.
abstract: In order to characterise and to classify some teas a simple, rapid and economical method based on composition, antioxidant activity and artificial neural networks (ANNs) is proposed. For these purpose two types of ANN based applications have been developed: one for predicting the antioxidant activity and a second one for establishing the class of the teas. The complex relationship between the total antioxidant activity (AA) depending on the total flavonoids content (F), total catechins content (C) and total methyl-xanthines content (MX) of commercial teas was revealed by the first designed feed-forward ANN. Secondly, using a probabilistic ANN, successful tea classification in various classes (green tea, black tea and express black tea) was also performed.
authors.affiliation: "Babeş-Bolyai" University, Faculty of Chemistry and Chemical Engineering, 11 Arany Janos, 400082 Cluj-Napoca, Romania. Electronic address: ccimpoiu@chem.ubbcluj.ro.
authors.forename: Claudia
authors.initials: C
authors.lastname: Cimpoiu
authors.affiliation: "Babeş-Bolyai" University, Faculty of Chemistry and Chemical Engineering, 11 Arany Janos, 400082 Cluj-Napoca, Romania.
authors.forename: Vasile-Mircea
authors.initials: VM
authors.lastname: Cristea
authors.affiliation: "Babeş-Bolyai" University, Faculty of Chemistry and Chemical Engineering, 11 Arany Janos, 400082 Cluj-Napoca, Romania.
authors.forename: Anamaria
authors.initials: A
authors.lastname: Hosu
authors.affiliation: "Babeş-Bolyai" University, Faculty of Chemistry and Chemical Engineering, 11 Arany Janos, 400082 Cluj-Napoca, Romania.
authors.forename: Mihaela
authors.initials: M
authors.lastname: Sandru
authors.affiliation: "Babeş-Bolyai" University, Faculty of Chemistry and Chemical Engineering, 11 Arany Janos, 400082 Cluj-Napoca, Romania.
authors.forename: Liana
authors.initials: L
authors.lastname: Seserman
keywords: Antioxidant activity; Artificial neural networks; Catechins; Flavonoids; Methyl-xanthines; Tea