Heavy Metals Contents in Some Commercially available Coffee, Tea, and Cocoa Samples in Misurata City – Libya
Journal Title: Progress in Chemical and Biochemical Research - Year 2019, Vol 2, Issue 3
Abstract
The purpose of the present study was to evaluate the concentrations of Mn, Cr, Fe, Cu, Zn, Pb, and Cd in 18 types of commercially available coffee, tea, and cocoa on Misurata city markets. The samples were dry digested and then measured by Microwave Plasma-Atomic Emission Spectrometry (MP-AES). The heavy elements levels were differed among the various types of analyzed samples. The concentrations of Mn were relatively higher than the other analyzed elements and varied between 1.0 – 673.3 mg/kg. The observed concentration ranges of the other elements, were as follows: Cr (0.1- 131.0 mg/kg), Fe (0.3 – 40.6 mg/kg), Cu (0.3 – 13.6 mg/kg), Zn (1.0 -20.9 mg/kg), Pb (1.8 – 4.4 mg/kg) and most Cd samples were below the instrument detection limits. The values determined for Mn, Cr, Fe, Cu, and Zn were lower than the maximum permissible limits. However, the concentrations of Pb were high according to the Brazilian law and Mercosul regulations, and the regulations of the European Union. Monitoring of heavy metal in food, like coffee, teas, and cocoa, provides useful information on safety features of food in regulatory procedures in terms of suitability of food for consumption, as well as its nutritional value.
Authors and Affiliations
Abdulfattah Alkherraz, Omar Hashad, Khaled Elsherif
Keywords
Related Articles
- EP ID EP634773
- DOI 10.33945/SAMI/PCBR.2019.2.3
- Views 62
- Downloads 0
Quantum-chemical study of geometric and energy characteristics of some bases of shiff gossipol
The most important aspect of modern chemistry lies in the fact that along with instrumental (physical) methods, computer modelling plays an increasing role in it. The role of molecular modelling in chemistry is quite lar...
Antiulcerogenic Activity of methanol extract and solvent fractions of Stem Bark of Lannea acida (A. Rich) Against Ethanol-Induced Gastric Mucosal Injury in Albino Rats
Peptic ulcer disease is one of the most prevalent gastrointestinal disorders causing tremendous human suffering worldwide. The present study was designed to evaluate the antiulcerogenic activity of the methanol and solve...
Comparative study on different horizontal subsurface substrates in flow wetlands
A greenhouse experiment has been conducted to study the effect of using different wetland substrates that have been compiled on the basis of effluent treatment efficiency. Wetland beds have been prepared with locally ava...
Facile sonochemical assisted synthesis of Cu2O and CuO nanoparticles
This work reports on cupric oxide (CuO) nanoparticles (NPs) and cuprous oxide (Cu2O) NPs synthesized using facile green sonochemical method. Phase analysis, morphology, and crystallinity of the prepared NPs were investig...
Determination of Important Phenolic Compounds in Pakistani Brown Rice Varieties in Controlled, Germinated and Fermented Conditions by High Performance Liquid Chromatography
A simple and novel high performance liquid chromatography (HPLC) method has been developed for the simultaneous determination and quantification of phenolic compounds in brown whole grain rice varieties of Pakistani orig...