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This paper addressed principles of the Polish food certification system. It presents the scope of certification as well as principles and products which should be certified. This work describes all procedures of products certification including the sampling and testing, steps of process, documents required from the producer as well as additional requirements.
Plastic films are of key importance as a group of materials used for packaging food products. It is therefore crucial that they meet specific functional and durability requirements as well as comply with all regulations regarding food contact materials. A degree to which a set of properties of these materials satisfies the requirements connected with their usage determines their functional value. The level of functional value depends to a large extent on climate factors affecting these materials in the post-production stage. The aim of this work was to analyze the effect of climate factors on the level of changes of the parameters characterizing the functional value of polyolefin packaging films used for food products. The research was conducted with the main focus on the scope and intensity of changes of selected properties of packaging films in different microclimate conditions. The results became the basis of assessing the impact of climate factors on the level of changes of the parameters characterizing functional value and served as a groundwork to the analysis of the correlation between the changes in the parameters and the level of functional value of the plastic films.
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Cornflakes don't grow on trees

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This paper investigates the effectiveness of electronic nose with subsequent principal component analysis (PCA) treatment of data for differentiation of food samples of varied odour quality caused by lipid oxidation. Samples were evaluated for off-flavours with an electronic nose and a sensory analysis and for Totox value. Volatile compounds of fresh samples and samples subjected to storage test at 60°C were isolated with a static headspace technique. The results suggest that the electronic nose could help to supplement the sensory analysis. Models based on partial least-squares analysis were able to predict the oxidized flavour attribute of samples, with correlation coefficients ranging from 0.66 to 0.99. Based on elaborated methods and data treatment with PCA it was possible to distinguish between different food samples and monitor the formation of off-flavours associated with lipid oxidation.
On the basis of error theory a method for determining organoleptic evaluation of food products quality and ex­perts number for a taken safety result. The method allows to solve a reverse task for determining result safety at a given member of experts.
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