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Migration of chemical substances from food contact materials used in food product packages is an important issue regarding food safety. The assessment of in force legislation on food contact materials is made by instrumental monitoring on migration in the case of more monomers and additives. Predictive mathematical models can be used to describe migration. To limit migration, a general purview stipulates that 1 kg of food products consumed by a person with a body weight of 60 kg is packed in cubic package of 6 dm 3 surface where the substance migrates from. The specific migration limit (SML) is the maximum quantity of a substance permitted in food which must guarantee that food contact materials are not a risk for human health. The analytical model allows determining of some part of the migrant which passed from package into product after a certain period of time. If there are initial accurate data and limiting conditions, the intake of maximum quantity e improvements in food chain traceability.

Introduction. It was performed a research the physical and chemical, antioxidant and nutritional properties of the fondants with beetroot juice addition. Materials and methods. 3 samples of fondants with juice obtained from raw (1), boiled (2) and baked (3) beetroot were used in this study. Methods: sensory analysis with the help of 15 subjects, the antioxidant activity assessment through DPPH method, and the chemical test, which refers to moisture, ash, mineral and reducing sugar determinations. Results and discussions. Sample 1, which are fondant candies with juice obtained from fresh beetroot, was the most appreciated with a total ranking of 8,92, and sample III, fondant candies with juice obtained from baked beetroot, was the least appreciated with a result of 8,55. Sample II, fondant candies with juice obtained from boiled beetroot, had an overall assessment of 8,59. Highest antioxidant capacity occurs in the case of fondant candies with red juice obtained from raw beetroots (sample 1), with an overall performance of 93,22%. A rather lower result had the sample 2 with 92,84%. Sample 3 showed the lowest result of 91,49%. The highest results in the matter of moisture content (94,20%) and reducing sugars (14,20%) had the sample 3. On the contrary, the lowest results for both moisture content and reducing sugars was shown by sample 2 with 93,2% and 12,1%. The highest value of ash content was shown by the sample with raw beetroot juice, 5,66%. Sample 3 had the lowest level of ash content, 1,18%, five times lower comparing to the first sample. Conclusions. The fondants obtained from raw beetroot juice has the most pronounced antioxidant capacity and the betaine content is almost double compared with other analysed samples.

The research was carried out with the following purpose:-to determine the level of heavy metal accumulation in the tissues of certain vegetable species taken from polluted industrial areas and the degree to which their content is modified during technological processing operations;-to study the possibilities in which fresh vegetable species with a high content of heavy metals (an exceed of LMA) can be used in the canning industry, in conditions assuring full safety for consumers. Research findings have revealed that tomato juice content of heavy metals is significantly lower compared to that of fresh tomatoes (especially in the case of lead and cadmium).

In this research there were tested different types of one layer and multiple layers foils used for the bread packing. The foil testing for gases permeability was done by the manometer method and the permeability determination at water vapors was done by the humidity detector method. The foils studied presented a different permeability at gases and water vapors according to their one layer or multiple layers structure. In the case of the evaluation of the global migration level we observed that all the studied foils presented values under the limit imposed by law and most of the values for Pb and Cd were undetectable.

Introduction. The research aim is to determine effect of duration of dehulling, the barley size and moisture, the rotation speed of abrasive discs, the abrasive grit and the load factor of the dehuller on the dehulling index. Materials and methods. The dehulling was carried out in laboratory dehuller (model ULZ-1) at the rotation speed of abrasive discs of 29.6±0.015 s-1 (1775±0.9 rpm) and 42.3±0.013 s-1 (2540±0.8 rpm) and removing of barley husks and meal was conducted in the laboratory aspiration duct of 60 mm width. Results and discussion. The research has shown that the increase in the dehulling duration the weight of the barley loaded to the dehuller, the rotating rate of abrasive discs and the load coefficient of the dehuller working chamber leads to the dehulling index rise. There exists the non-linear dependence between the load coefficient of the dehuller working chamber with the minimum point of the dehulling index for the large fraction of barley 0.27–0.28 and for the small fraction of barley 0.24–0.25. The influence of the barley weight and the load coefficient of the working chamber of the dehuller on the dehulling index occurs according to the curvilinear dependence with the minimum point of the dehulling index for the large barley fraction of 0.27–0.28 and for the small barley fraction of 0.24–0.25. The increase in the processing duration and the load coefficient of the working chamber of the dehuller leads to the increase of the dehulling index, but at the same time the minimum point of the dehulling index decreases from 0.29 to 0.25. As the size of the barley grows, the dehulling index decreases. The gain in moisture of the barley leads to the decrease of the dehulling index according to the linear dependence for both large and small barley fractions. Moreover, the small fraction has the bigger values of the dehulling index than the large one. The moisture influence on the dehulling index has linear dependence for both large and small barley fractions. As moisture increases the dehulling index decreases linearly, but at the same time the large barley fraction had lower values of the dehulling index than the small one. The increase in abrasive discs grit leads to the dehulling index decrease according to the curvilinear dependence. At the grit of 80 the dehulling index gets the constant value and its change depends on the duration of processing. Conclusion. The influence of technological parameters of barley grain on the dehulling index has linear dependence, and machine parameters affect the dehulling index according to curvilinear dependency. These results must be considered when evaluating the effectiveness of dehulling and the development of the process model.