Journal
FOOD CHEMISTRY
Volume 345, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2020.128856
Keywords
Drying; Polycyclic aromatic hydrocarbons (PAHs); Formation; Kinetics
Funding
- Scientific Research Projects Coordination Unit of Ankara University [17L0443017]
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The study found that the formation of PAHs in olive pomace during drying is influenced by temperature and time, with the total PAH formation rate increasing with temperature. The activation energy and frequency factor values also increase as temperature rises.
The objective of this study was to evaluate the formation kinetics of polycyclic aromatic hydrocarbons (PAHs) during drying of olive pomace. It was dried at 170, 200 and 230 degrees C until the final moisture of 5%. PAH analyses were realized after certain drying times and moisture contents. Kinetics of the total PAH formation was comprised with the formation of PAH compounds through the drying process. The highest formation (2224 mu g/kg) was observed at 200 degrees C and 5% moisture after 40 min. This also indicated the significance of drying time and evolution of temperature on the formation of PAH compounds. First order kinetic was applied to determine the kinetic constants as a function of temperature. Total PAH fomration rate constants (k) increased with the drying temperature. Activation energy (E-a) and frequency factor (k(0)) values were determined to be 45.9 x 10(3) kJ/kg-mol and 18125.95 min(-1), respectively using the Arrhenius equation.
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