This thesis „Monitoring of changes in quality indicators when prolonging the shelf life of heat-treated meat products“, deals with the legislativ, composition and procesing of heat-treated meat products in the first part. Next part describes the possibilities inactivation of microorganisms and sensory analysis. The last part of the literature review deals with a food packaging. The practical part deals with sensory evaluation of two samples with different meat kontent during the period of seven months. The appearence, the surface of the intestine, texture (by touch), surface of the cut, smell, smell intensity, texture (biting), taste, taste intensity, salinity, the presence of acidic, metallic, sweet and bitter taste were evaluated. Results were processed using Duncan's test and evaluated. It was found that the sensory evaluation of both samples did not differ much from each other. For both samples, it would be possible to extend the date of minimum durability to seven months.

The aim of this diploma thesis „Evaluation of Selected Quality Parameters in Heat-treated Meat Products“ in the theoretical part were characterized heat treated meat products, produciton materials, production technology and description of the products packaging in detail. Furthermore were characterized microorganisms of meat and meat products which cause their destruction and factors influencing their growth were taken into account. Another part of the work was experimental and it was about the quality monitoring of two types of heat-treated meat products, divided into two batches. One of the practical part was microbiological analysis and these microorganisms were monitored: total bacteria count, the number of coliform bacteria, the total number of psychrotrophic microorganisms, the number of anaerobic endospore forming bactreia, yeasts and fungi and the amount of enterococcus bakteria. Simultaneously with microbial analysis, pH determination was performed. At the last stage of diploma thesis is statistical evaluation of the results which is monitoring the numbers of microorganisms and the pH depending on the storage period.

Vysočina salami is the best known and the most widespread product of durable heat-treated meat products in the Czech Republic. Chemical, physical, microbiological and sensory parameters were examined for this product depending on salt content (2 % or 1,6 %) and grain size (1 mm, or 2 mm). There was found no difference that would be important from a technological point of view during comparing the fine and coarser grain in the Vysočina salami. By comparing differently salty products, lower salt content could cause manufacturing problems. By reducing the salt content, the drying time was prolonged, and the colour stability deteriorated. It is advisable to reduce the salt content to the lowest possible level in order to improve the health aspect of the consumption of meat products but at the same time the technological characteristics of the production are not affected. Finally, salt is important for the taste of the product. This was clearly demonstrated in sensory analysis. The analysis shows the Vysočina salami with 2 % salt addition has been more palatable to the consumer.

The diploma thesis “Comparison of quality parameters of Wiener frankfurter in accordance to manufacturing formula” considers meat products in relation to content of salt. The theoretical part of the thesis includes characteristic of meat products and related legislation. This part considers Wiener frankfurter and characterizes ingredients necessary for their production. Moreover, individual steps of the manufacturing process of the Wiener frankfurter are described in this part and it characterizes methods used for evaluation of quality and health safety. In the practical part of the thesis differences among individual variants with various content of salt in Wiener frankfurter (1,4 %; 1,6 %; 1,8 %; 2,0 %) were evaluated. There was used chemical analysis, colour measuring of surface- and cut of sausages before and after heat treatment. Besides also texture was evaluated. Regarding the sensory analysis all variants of sausages were rated positively, statistically significant difference was found among intensity of salinity.

Microbiological quality of food is important both because of hygiene and health and has a significant influence on the shelf life of foods. The aim of this thesis was to evaluate samples of meat products for contamination by microorganisms. There was soft meat product, the product heat-processed and heat-treated. Evaluated how they affect the product and then cutting up into the vacuum packaging the total number of microorganisms, the influence of ambient temperature on the development of bacteria and the production have been using the new technology will benefit the health quality of the product. As revealed from the results, a product bar showed fewer organisms than product, which was sliced and then packaged in a vacuum. The fault was apparently slicing equipment that was not completely disinfected, and there was a transfer of bacteria. Therefore, it is necessary to improve sanitation and to see to their strict compliance. Resulting in the effect of temperature on the growth of microorganisms. The rising temperature is increased, the number of microorganisms. Use of air-conditioned chambers in the production of meat products is shown in terms of reducing the total number of microorganisms as a positive.

Meat products belong into a popular group of foodstuffs intended for human consumption. Upon cancellation of state standards after 1992 it was possible to register an increase in distribution of products into shopping networks under the same name but with different ingredients. An analysis of the content of basic ingredients and of the sensory quality was carried out on selected samples of heat-treated meat products (20 products, 17 producers) bought in various types of shops. The contents of basic ingredients (water, fat, salt, proteins, collagen) were measured in a laboratory with the help of the NIRFLEX N 500 instrument, and no results of measurement at the level of conclusiveness (p < 0.05) were statistically evidenced. The best evaluation was granted by the assessors (6 persons) to the sample of the "Junior" group from producer "Fleischwaren Berger" from the Billa supermarket, while the worst evaluation belonged to the sample of the "Chicken Junior" group from producer "Schneider Masokombinát Plzeň" from the Albert supermarket.

This thesis deals with the quality of selected meat products, which are offered under private labels on the Czech market. Four types of meat products (ham salami, Debrecen roast, Vysočina sausage, Poličan sausage) from four retail chains (A, B, C, D) were subjected to laboratory and sensory analyses in order to determine their quality. The total number of 128 meat product samples in eight different batches was measured from March to November 2014. Instrumental analysis included determination of salt content, dry matter, fat, and water activity (only Vysočina sausage and Poličan sausage). Sensory evaluation covered an assessment of the texture quality, appearance after slicing, smell and taste. The results were compared with Decree 264/2003 Coll. and statistically evaluated. It was found that all products meet all legal requirements. Only in Debrecen roast the salt content was exceeded in some batches, and the fat content in one batch. However, the average value of all eight batches corresponded to the values declared on the packaging. The best products were evaluated as follows: ham salami B and C, Kladno roast D (ranked Debrecen roast), Vysočina sausage B and Poličan sausage B. The highest ranking was achieved by meat products offered by the retail chain B.

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In this thesis I deal with the influence of storage temperature on reducing the number of microorganisms in meat products. In this work is analyzed cooling and freezing storage of meat and meat products. The next section provides an overview of the major contributors to food-borne illness (Salmonella, Escherichia coli, Campylobacter, Listeria monocytogenes, Bacillus cereus, etc.). At the end of research is the mention of the HACCP system. The research was focused on the refrigerated storage of whole (rod) sausages and vacuum packed sliced meat products, which were further divided into cooked and uncooked meat products. The thesis was evaluated the effect of changes in temperature and storage technology to the number of microorganisms in cooked and uncooked meat products.

This diploma thesis deals with poultry meat and poultry meat products. In the introduction is outlined the consumption of meat in developed and less-developed countries and the goal of this work. The second chapter is about the history of meat and meat products processing, the development of the consumption of poultry meat in our country and the world. It is described the composition of poultry meat and its basic components. In the third chapter are written the types of poultry and shortly described their fattening. Processing of meat products, meat production and food safety. The practical part of the diploma work is in the form of a questionnaire and deals with the attitude of consumers to poultry meat and poultry meat products. The research made this form was divided into stages: - preparation and plan of the questionnaire - publication - processing - evaluation of questionnaires The end of this work is about how important is poultry meat, its perspective in human diet in the future and shortly summarized results of research.