An Approach to Automation and Digital Control of Ferroimpurities in Food Ingredients

Introduction: One of the quality indicators of flour, cereals, sugar and many other food products is the content of ferroimpurities. Current methods of appropriate control (including those given in numerous standards), as a rule, encompass three operations of magnetic extraction of ferroimpurities, their accumulation and determination of the total mass. However, with a limited (even increased) number of such operations, a certain unrecovered, often significant, particle mass always remains in the sample of the test product, which leads to an error in the control.

Purpose: To present the approbation results of the analyzer created by the authors with the capabilities of automation and digital control of the content of ferroimpurities content, leading to quickly obtaining a more objective result compared to existing control methods.

Materials and Methods: We experimentally obtained a mass-operational dependence of the decrease in the content of ferroimpurities: as they were magnetically extracted from the product, then we found its mathematical dependence - for further extrapolation and calculation of the total mass. As an object of research, samples of such food products as flour, malt, tea were utilized.

Results: The developed laboratory sample of the analyzer and the principle of its operation and test are described. Considering the results of testing the analyzer, the obtained values for the content of ferroimpurities in the test samples significantly exceed the standardized values, which substantiates appropriate decisions on the removal of such impurities from the studied products.

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