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The quality of eggs - general, functional and nutritional properties
PECH, Miloslav
This bachelor's thesis, processed in the form of a literary review, focuses on a comprehensive view of hen's eggs, analyzing their general, functional, and nutritional properties. After the introduction, a literary review follows, mapping the biological origin and domestication of the chicken, and then summarizing the current state of chicken farming. The thesis then delves into the formation and development of eggs, examining the structure and chemical composition of the yolk and albumen, including their proteins, lipids, carbohydrates, pigments, vitamins, and minerals. The physicochemical properties of eggs are also analyzed, including a total of seven properties such as specific gravity, freezing point, or refractive index. A detailed examination of the functional properties of eggs follows, which represent a key element in understanding their wide use in the food and culinary industries. The thesis focuses on analyzing the mechanisms through which hen's eggs can form gels, foams, and emulsions, which are properties that play an important role in various food processes and recipes. These properties are essential for the production of various foods, such as gelatin desserts, leavened doughs in baking, sauces, and mayonnaises. Eggs are also recognized as functional food because they are a rich source of nutrients, including vitamins, minerals, and biologically active substances that can contribute to overall health. These substances can, for example, help reduce the risk of heart disease and improve eye health. In the next section, the thesis focuses on the nutritional properties of eggs, examining microbial contamination, egg allergies, and biologically active substances such as choline, immunoglobulin Y (IgY), and lutein and their impact on human health. An overview of this section provides a deeper understanding of hen's eggs and their influence on human nutrition and health.
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Závislost obsahu vybraných vitaminů v rostlinách "microgreens" na podmínkách pěstování
HRBOVÁ, Gabriela
The aim of the work is to summarize the current knowledge about microgreens. From a nutritional point of view, they contain a higher concentration of vitamins, minerals, etc., compared to adult plant forms. The method of cultivation affects the content of the mentioned substances, which this work will also deal with. The disadvantage of microgreens is their low durability. Currently, research is being conducted focused on the possibilities of extending their shelf life through specific storage conditions or encapsulation.
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Zdroje bílkovin v lidské výživě
Amirova, Sabina
This thesis includes literature data on the topic Sources of Protein in Human Nutrition. In the first part, the protein itself is described in detail, as a chemical structure in human physiology, structural units of protein at the level of biochemistry of amino acids and their brief description in human physiology, recommendations on the use of daily protein intake for various social groups, detailed information on animal protein sources and plant origin. The second part of the work reflects the problems connected with the difficult situation of individual territorial groups under the threat of "protein hunger". This work provides examples that serve as a barrier in the sphere of food production.
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Kvalita toustových chlebů ovlivněná vlákninou
Premusová, Klára
The main aim of the thesis The quality of toast breads affected by fibre was to suggest a recipe with addition of wheat fibre (WF 600), potato fibre (KF 200), apple fibre (AF 12) and combination of wheat fibre and psyllium (WF 600 + P 95) in amounts of 3 %, 6 % a 9 % and further to assess the effect of added fibre to the quality of bread. I have done a baking experiment, a sensory analysis, universal tensile and pressure test. I´ve defined a colour of crumb and calculated nutritive value. The results were processed in Statistica 12 and MS Excel programmes. The addiotion of 3 % of psyllium and wheat fibre and 3 % of potato fibre had the best effect on bread volume. The bread with addition of apple fibre was the darkest colour, while the bread with addition of wheat fibre was the lightest one. A sample with 9 % of psyllium and wheat fibre was the softest one. A control sample had the highest nutritive value and the bread with 9 % of psyllium and wheat fibre had the lowest one.
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Směsi pro výrobu bezlepkových muffin s přídavkem vlákniny
Bazalová, Kristýna
The aim of the thesis Mixture for the production of gluten-free muffins with added fiber was to suggest a recipe with addition of bamboo fiber (BAF 200), apple fibre (AF 401) and apple fiber (AF 12) in amounts of 3 %, 6 % and 9 % and furher to assess the effect of added fibre on the quality of muffins. Twenty samples were baked. The base for half of them was gluten free mixture Jizerka, the buckwheat and rice flour were used for the rest. By bakery experiment it was found that the smallest baking losses had muffins with Jizerka and the addition of bamboo fiber in the amount of 3 % and 6 %. The Jizerka based recipe had a better effect on the volume of muffins. The most acceptable was sample with 3 % apple fiber AF 12 and Jizerka. Regarding the Muffins with buckwheat and rice flour, sample with the addition of 3 % bamboo fiber was the best. Muffins with the bamboo fiber and Jizerka also had the lowest energy value.
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RAW food - živá strava
Kikalová, Michaela
The aim of the diploma thesis „Raw food – raw food“ was study and describe a living diet. Describe the influence on human body and propose a suitable recipe a raw durable product. At the department of food technology, the faculty of Agronomy of Mendel university in Brno were made eight recipes of raw bars without heat, with a dates and cocoa base. For each recipe was added the third feedstock. Strength, water content, sensory evaluation and final nutritional value were evaluated. I was found that the most sensibly acceptable formulation contained coconut in addition base. Conversely, the least acceptable formulation contained a banana in addition to the base. The highest nutritional value was the bar with addition whit coconut. Next were made four dried raw bars where the sensory evaluation was statistically different among the professional public, who are interested in raw food and the non-professional public.
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Hodnocení bezlepkového chleba s přídavkem vlákniny
Pernicová, Helena
The aim of the thesis “Evaluation of gluten-free bread with added fiber” was to devise recipes for the preparation of gluten free bread. At the building of the Department of Food Technology at Mendel University in Brno 10 samples of bread with 3 %, 6 % and 9 % of added apple fiber, flaxseed fiber and poppy seed fiber were made. The bakery experiment was evaluated, the strength using TIRA-test was determined 24 h and 48 h after baking and the sensory analysis was performed, while evaluating the sensory panel of celiacs and those without dietary restriction. The most acceptable was the gluten-free bread sample with the addition of 3 % of flaxseed fiber. A statistically significant difference was found among the assessment of the groups of evaluators with and without celiac disease in the parameters of the crumb porosity, the color of the crust and the overall impression of gluten-free bread.
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Charakteristika jakosti nealkoholických nápojů z hlediska jejich nutriční hodnoty
Turková, Michaela
The theme of this bachelor thesis is „Characteristics of the quality of soft drinks in terms of their nutritional value“. In this thesis, we can find a division of soft drinks according to technological and legislation, furthermore basic raw materials for their production or basic technological processes of selected beverages. The thesis summarizes the requirements for the quality of beverages, their labeling, packaging and market launch. It presents customer knowledge - what influences their purchasing decisions. The thesis deals with the consumption of soft drinks in the Czech Republic and in the world. It compares the most popular drinks, describes their composition, their nutritional values, and the positive or negative effects of individual beverage ingredients. In conclusion, the recommendations for consumption are presented and summarized.
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