Antioxidant Capacity: Experimental Determination by EPR Spectroscopy and Mathematical Modeling
PBN-AR
Instytucja
Wydział Matematyki, Fizyki i Chemii (Uniwersytet Śląski w Katowicach)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
ISSN
0021-8561
EISSN
Wydawca
AMER CHEMICAL SOC
DOI
URL
Rok publikacji
2015
Numer zeszytu
28
Strony od-do
6319–6324
Numer tomu
63
Identyfikator DOI
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Słowa kluczowe
EN
antioxidant capacity
EPR spectroscopy
mathematical modeling
Trolox equivalent antioxidant capacity (TEAC)
Streszczenia
Język
EN
Treść
A new method of determining antioxidant capacity based on a mathematical model is presented in this paper. The model was fitted to 1000 data points of electron paramagnetic resonance (EPR) spectroscopy measurements of various food product samples such as tea, wine, juice, and herbs with Trolox equivalent antioxidant capacity (TEAC) values from 20 to 2000 μmol TE/100 mL. The proposed mathematical equation allows for a determination of TEAC of food products based on a single EPR spectroscopy measurement. The model was tested on the basis of 80 EPR spectroscopy measurements of herbs, tea, coffee, and juice samples. The proposed model works for both strong and weak antioxidants (TEAC values from 21 to 2347 μmol TE/100 mL). The determination coefficient between TEAC values obtained experimentally and TEAC values calculated with proposed mathematical equation was found to be R2 = 0.98. Therefore, the proposed new method of TEAC determination based on a mathematical model is a good alternative to the standard EPR method due to its being fast, accurate, inexpensive, and simple to perform.
Inne
System-identifier
0192700126412
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