Measurement of Heavy Metals, Saturated, and Trans-Fatty Acids in Fast Foods in Tehran

Heavy metals, saturated and trans-fatty acids are considered one of the most important food contaminants and health threats caused by natural phenomena or human activities. In this regard, fast foods are one of the sources that have to be monitored regularly as the potent points for potentially toxic elements and saturated and trans-fatty acids. The concentrations of lead, cadmium, and arsenic were measured using atomic absorption spectroscopy in fast foods (pizza, falafel, and chicken nuggets). The public health hazard from the consumption of fast food contaminated with heavy metals was determined using estimated daily intake, target hazard quotients, hazard index, and carcinogenic risk. The concentrations of saturated and trans-fatty acids were measured through the Gas chromatography method. A chicken nugget (۰.۱۳۳ mg/kg) had the highest concentration of arsenic, a pizza (۰.۱۲۳ mg/kg) had the highest concentration of lead, and falafel (۰.۱۳۷ mg/kg) had the highest concentration of arsenic. The majority of the estimated daily intake, target hazard quotients, and hazard index were lower than the world standards except for arsenic in chicken nuggets. The mean concentrations of saturated fatty acids in falafel, mixed pizza, and chicken nuggets were ۱۸.۰۲g/۱۰۰g, ۳۶.۳۵g/۱۰۰g, and ۱۹.۱۱g/۱۰۰g respectively. The mean concentrations of trans-fatty acids in falafel, mixed pizza, and the chicken nugget were ۱.۱۲ g/۱۰۰g, ۱.۳۲ g/۱۰۰g, and ۰.۷۹ g/۱۰۰g respectively. The mixed pizza had a higher saturated fatty acids content of ۳۶.۳۵% (heptadecanoic, stearic acid, and short-chain fatty acids). Therefore, heavy metals such as arsenic and saturated fatty acids in fast foods are a risk to the health of consumers and the only solution for this is to minimize the consumption of fast foods.

Keywords:

Fast food , heavy metals , Saturated fatty acids , Trans-fatty acids