2026-04-19T06:31:13Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/81812023-12-04T12:35:33Zcom_10259.4_2520com_10259_5086com_10259_2604com_10259_4313com_10259_5363col_10259.4_2521col_10259_4314col_10259_5364

00925njm 22002777a 4500 dc González Ceballos, Lara author Cavia Camarero, María del Mar author Fernández Muiño, Miguel Ángel author Osés Gómez, Sandra María author Sancho Ortiz, María Teresa author Ibeas Cortes, Saturnino author García García, Félix Clemente author García Pérez, José Miguel author Vallejos Calzada, Saúl author 2021-04 We have developed a new method for the rapid (2 h) and inexpensive (materials cost < 0.02 €/sample) “2-in-1” determination of the total phenolic content (TPC) and the antioxidant activity (AOX) in honey samples. The method is based on hydrophilic colorimetric films with diazonium groups, which react with phenols rendering highly colored azo groups. The TPC of the sample is correlated to its trolox equivalent antioxidant capacity (TEAC). The intensity of the color allows us to determine both TPC and TEAC of the sample by the analysis of a picture taken with a smartphone that is analysed by the use of the color-definition-parameters (RGB). The controlled light conditions and the systematic use of the same camera avoid the periodical calibration of the system improving the efficiency of the method. Thus, it is a simple method carried out by non-specialized personnel and it involves much lower money and time investment compared to traditional methods. 0308-8146 http://hdl.handle.net/10259/8181 10.1016/j.foodchem.2020.128300 Honey Sensor Total phenolic content Antioxidant activity TEAC Polymer Polyphenols A simple one-pot determination of both total phenolic content and antioxidant activity of honey by polymer chemosensors