Influence of potential pulses amplitude sequence in a voltammetric electronic tongue (VET) applied to assess antioxidant capacity in aliso.
Four signals configurations were studied, two of them built by small increases of potential and two with bigger increments. The highest current values were obtained when pulses with bigger change of potential were used although the best results were shown by the pulse sequence which included an intermediate pulse before the relevant pulse. A mathematical model based on trolox pattern was developed to predict antioxidant capacity of aliso, employing information obtained from all the electrodes, although model validation could be done only employing the information from gold electrode.
Departamento de Tecnología de Alimentos, Grupo CUINA, Universidad Politécnica de Valencia, Spain. Electronic address: tebanfuentes@gmail.com.
Esteban
E
Fuentes
Instituto de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Centro Mixto Universitat Politècnica de València e Universidad de Valencia, Camino de Vera s/n, 46022 Valencia, Spain.
Miguel
M
Alcañiz
Instituto de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Centro Mixto Universitat Politècnica de València e Universidad de Valencia, Camino de Vera s/n, 46022 Valencia, Spain.
Laura
L
Contat
Departamento de Tecnología de Alimentos, Grupo CUINA, Universidad Politécnica de Valencia, Spain; Departamento de Ingeniería de Alimentos y Productos Agropecuarios, Universidad Nacional Agraria la Molina-UNALM, Av. La Molina s/n, Lima, Peru.
Edwin O
EO
Baldeón
Departamento de Tecnología de Alimentos, Grupo CUINA, Universidad Politécnica de Valencia, Spain.
José M
JM
Barat
Departamento de Tecnología de Alimentos, Grupo CUINA, Universidad Politécnica de Valencia, Spain.
Raúl
R
Grau
D029661:Alnus / Q000737:chemistry*; D000975:Antioxidants / Q000032:analysis*; D004560:Electricity; D055664:Electrochemical Techniques / Q000379:methods*; D004566:Electrodes; D062609:Electronic Nose; D006046:Gold
D000975:Antioxidants; D006046:Gold
Aliso; Alnus acuminata; Antioxidants; Electronic tongues; Pulse voltammetry