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Antioxidant activity and physico‐chemical parameters for the differentiation of honey using a potentiometric electronic tongue
Author(s) -
JuanBorrás Marisol,
Soto Juan,
GilSánchez Luis,
PascualMaté Ana,
Escriche Isabel
Publication year - 2017
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.8031
Subject(s) - electronic tongue , antioxidant , food science , sunflower , potentiometric titration , orange (colour) , chemistry , mathematics , environmental science , biology , horticulture , biochemistry , taste , ion , organic chemistry
BACKGROUND This work evaluates the capacity of a potentiometric electronic tongue to differentiate between types of honey (orange blossom, rosemary, thyme, sunflower, winter savory and honeydew honey) according to their antioxidant level. The classical procedures used to evaluate the antioxidant potential of honey are inappropriate for in situ monitoring on reception of batches of raw honey in the packaging industry. They are also destructive, time‐consuming and very tedious, requiring highly expert analysts and specialised equipment. RESULTS The electronic tongue system made with Ag, Ni, Co, Cu and Au was able to not only differentiate between types of honey but also to predict their total antioxidant capacity. The discrimination ability of the system was proved by means of a fuzzy ARTMAP type ANN , with 100% classification success. A prediction multiple linear regression model showed that the best correlation coefficient was for antioxidant activity (0.9666), then for electrical conductivity (0.8959) and to a lesser extent for a w , moisture and colour. CONCLUSION The proposed measurement system could be a quick, easy option for the honey packaging sector to provide continuous in‐line information about a characteristic as important as the antioxidant level. © 2016 Society of Chemical Industry