DETECTION OF THE CONCENTRATION OF HEAVY METALS IN DIFFERENT FOOD ITEMS LEACHING OUT OF NEWSPAPER PACKAGING: A FOOD SAFETY RISK ASSESSMENT
The study was conducted to find out heavy metals present in three different food items, and the intensity of heavy metal contamination from newspaper when it was used to pack these food items. In this study the concentrations of four heavy metals i.e., lead (Pb), cadmium (Cd), chromium (Cr), copper (Cu), in fried food (beguni), sweet food (jilapi) and baked food (cake) were evaluated in primary condition, after 30 minutes, after 60 minutes, and after 120 minutes
of wrapping with newspaper package. The samples were digested using USEPA method (3050B) and were analyzed for heavy metals using Flame Atomic Absorption Spectrophotometer (FAAS) and obtained data were analyzed using SPSS 22 statistical program for one way ANOVA. The mean concentration of Cu in Jilapi, Cake and Beguni in control condition was found 0.9300 mg/kg with a standard deviation of 0.35848. After 30 minutes, 60 minutes, 120 minutes of treatment the mean concentration of Cu were 1.3611±0.35847,
1.4233±0.99061, 1.5067±0.99344 mg/kg respectively. The mean concentration of Pb in Jilapi,
Cake and Beguni was 0.2733, 0.3722, 0.4244 and 0.5067 mg/kg respectively for control, after
30 minutes, after 60 minutes and after 120 minutes. The average concentration of Cr in Jilapi,
Cake and Beguni varied 0.3816mg/ kg, 0.4767 mg/kg, 0.5256 mg/kg and 0.6100 mg/kg for
control, after 30 minutes, after 60 minutes and after 120 minutes respectively. Average Cd
concentrations were 0.989 mg/kg, 0.1511 mg/kg, 0.1978 mg/kg and 0.2444 mg/kg for control,
30 minutes treatment, 60 minutes treatment and 120 minutes treatment respectively.