Determining the microelement composition of poppy seeds using solid­phase spectrophotometry method

Authors

DOI:

https://doi.org/10.15587/1729-4061.2018.127419

Keywords:

spectrophotometric determining of elements, food supplements, poppy seeds, hybrid methods of analysis

Abstract

Poppy seeds are one of the most important and oldest oil-bearing crops in the world. Therefore, quality control of poppy seeds and food products whose composition contains them as a food additive, is very important. To this end, we have applied procedures for solid-phase spectrophotometric and photometric determining of micro elements in food products.

It was established that in determining cadmium and zinc, the best ion exchanger for the group concentration of interfering metal ions is the ion exchanger with the immobilized KO.

 made it possible to concentrate and determine in the solid phase the ions of Hg(II). Using  enabled selective determining of Pb(II).

Selective determining of the Fe(III) ions at pH 3 was conducted using ammonium thiocyanate. Cu(II) was determined photometrically upon masking the ions of Fe(III) employing SPADNS. Based on the data acquired, we have developed a microelement analysis scheme for poppy seeds.

It was established that the sample contained, mg/kg: Cu(ІІ) – 5.0; Pb(ІІ) – 0.3, Zn(ІІ) – 50, P(V) – 1,600, K − 550, Na – 20, Ca – 1,500, Mg(II) – 450; Fe(ІІІ) −10; Cd(ІІ) and Hg(ІІ) are absent.

The proposed scheme for analysis of poppy seeds is universal and could be applied for microelement analysis of other food products.

The procedures employed are characterized by sensitivity and selectivity.

Ion exchangers with the immobilized dyes, as well as procedures for the solid-phase spectrophotometric determining, are environmentally safe. They do not require the use of toxic organic reagents.

The procedures applied are easy to use.

Relative standard deviation in the results does not exceed 0.10. This indicates good reproducibility of the results.

Author Biographies

Elizaveta Kostenko, National University of Food Technologies Volodymyrska str., 68, Kyiv, Ukraine, 01601

Doctor of Chemical Sciences, Professor

Department of Food chemistry

 

Elena Butenko, National University of Food Technologies Volodymyrska str., 68, Kyiv, Ukraine, 01601

PhD, Associate Professor

Department of Food chemistry

Maria Golubeva, National University of Food Technologies Volodymyrska str., 68, Kyiv, Ukraine, 01601

Department of Food Expertise

Larisa Arseneva, National University of Food Technologies Volodymyrska str., 68, Kyiv, Ukraine, 01601

Doctor of Technical Sciences, Professor

Department of Food Expertise

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Published

2018-03-30

How to Cite

Kostenko, E., Butenko, E., Golubeva, M., & Arseneva, L. (2018). Determining the microelement composition of poppy seeds using solid­phase spectrophotometry method. Eastern-European Journal of Enterprise Technologies, 2(11 (92), 23–28. https://doi.org/10.15587/1729-4061.2018.127419

Issue

Vol. 2 No. 11 (92) (2018): Technology and Equipment of Food Production

Section

Technology and Equipment of Food Production

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Copyright (c) 2018 Elizaveta Kostenko, Elena Butenko, Maria Golubeva, Larisa Arseneva

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