Journal
FOOD CHEMISTRY
Volume 344, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2020.128631
Keywords
Polycyclic aromatic hydrocarbons; Roasting; Coffee beans; Coffee brew; Coffee safety; Analytical techniques
Funding
- University of Turin
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PAHs, potentially genotoxic and carcinogenic compounds, are mainly derived from incomplete combustion and pyrolysis of organic matter. Coffee, a widely consumed beverage, may contain PAHs due to roasting processes. To ensure the safety of this popular commodity, control over the entire production chain is essential.
Polycyclic aromatic hydrocarbons (PAHs) are considered to be potentially genotoxic and carcinogenic in humans. These ubiquitous environmental pollutants may derive from the incomplete combustion and pyrolysis of organic matter. Coffee is an extensively consumed drink, and its PAHs contamination is not only ascribed to environmental pollution, but mainly to the roasting processes. Although no fixed limits have yet been set for residual PAHs in coffee, the present review intends to summarise and discuss the knowledge and recent advances in PAHs formation during roasting. Because coffee origin and brewing operations may affect PAHs content, we thoroughly analysed the literature on extraction and purification procedures, as well as the main analytical chromatographic methods for both coffee powders and brews. With regards to the safety of this appreciated commodity, the control on the entire production chain is desirable, because of coffee beverage could contribute to the daily human intake of PAHs.
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