Journal
LUMINESCENCE
Volume 37, Issue 8, Pages 1259-1266Publisher
WILEY
DOI: 10.1002/bio.4291
Keywords
fig fruits; fluorometric analysis; food; PA@CQDs; tyramine
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In this study, TYM in different types of food was analyzed using green synthesis carbon dots from fig fruits. By gradually adding TYM to polyamine carbon quantum dots, the fluorescence of the quantum dots was enhanced, and the method was successfully applied for the quantification of TYM in different types of food.
Tyramine (TYM) is catecholamine releasing compound and TYM rich food causes hypertensive crisis due to a combination with monoamine oxidase inhibitor (MAOIs). Therefore, analysis of TYM in TYM rich food as (old cheese, cured meat, sausage, pickled olive and canned fish) and the environment is essential for hypertensive patients and to improvement of food industries. In this work, TYM was analyzed in different types of food using novel green synthesis carbon dots from Ficus carica (fig fruits). The gradual addition of TYM to polyamine carbon quantum dots (PA@CQDs) led to enhancement of the quantum dots fluorescence due to formation of hydrogen bonding between quantum dots and TYM. The calibration graph was plotted in the range 5-400 ng mL(-1). The method was applied for the determination of TYM in different types of food as old cheese, cured meat, sausage, pickled olive and canned fish. The lower limit of quantitation (LOQ) was found to be 1.68 ng mL(-1). The method was successfully applied for the quantification of TYM in varying types of food with high sensitivity and high economic effect due to the reusability of the quantum dots. The optical and morphological characters of quantum dots were studied carefully.
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