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Nutritionally important components of fish muscle in the prevention of serious diseases
Mádl, David ; Bušová, Milena (advisor) ; Holcátová, Ivana (referee)
The topic of this bachelor thesis is the issue of nutritionally important components of fish muscle in the prevention of serious diseases. Fish meat is a rich source of essential amino acids, polyunsaturated fatty acids, minerals and vitamins, which has been shown to contribute to the improvement of human health. Omega-3 fatty acids reduce the risk of cardiovascular disease. In the practical part of the thesis, the consumer preferences regarding the consumption of fish snacks and consumer awareness of the importance of fish meat for health and disease prevention are investigated by means of a questionnaire survey. This work is of benefit not only to the professional community but also to consumers. Key words: fish meat; omega-3 fatty acids; dietary recommendations; fish contamination; fish consumption A
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Hormonally active substances in the aquatic environment and risk to aquatic organisms and human.
Duisembay, Zhuldyz ; Bušová, Milena (advisor) ; Ezechiáš, Martin (referee)
This bachelor thesis aims to investigate the presence, sources and impacts of hormonally active substances, or endocrine disruptors (EDs), in the aquatic environment. These substances, including long-lived persistent organic pollutants (POPs), e. g. pesticides and polycyclic aromatic hydrocarbons (PAHs), and non-persistent pollutants such as bisphenol A and alkyphenols, directly or indirectly affect the hormonal systems of aquatic organisms and humans. For instance, it was observed, that elevated concentrations of certain progestogens impact fertility, reproductive processes, induce transcriptional changes, and alter sex ratios within fish populations. Numerous studies in the field focus on evaluating the manifestation of EDs in water, their effects on behavior and vital functions of aquatic organisms and humans, and the challenges associated with their detection and removal from the wastewater discharged into the environment. Recent researches have revealed elevated concentrations of specific EDs in various regions, including Czech Republic (significant concentrations of levonorgestrel, megestrol acetate (MGA), drospirenone and dienogest were detected in Blanice river). This indicates a lack of regulations and potential difficulties in effectively removing these substances from water with...
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Natural toxins in food and their effect on human health
Houdková, Kristine ; Bušová, Milena (advisor) ; Schlenker, Anna (referee)
This bachelor thesis deals with the occurrence of natural toxic substances in food and describes their effect on human health. It focuses on toxic substances that are a natural part of plants, animals, and also on natural contaminants. This work is divided into theoretical and practical part. The aim of this work is to provide information and raise awareness about these substances, because they are an integral part of most foods. The purpose of the practical part is find out the level of public awareness of toxins in food and discover the frequency of mycotoxins appearences in food from the Rapid Alert System for Food and Feed (RASFF), which operates within the European Union. Mold toxins are a major worldwide problem, both in terms of public health and global economic. The research part of the work was carried out using a questionnaire survey through social networks. The general public seems to have a basic awareness of food safety and toxins substances in food. The bachelor thesis can serve as an informative and educational material for the public. Key words natural toxins - toxic substances - mycotoxins - alkaloids - poison
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Process contaminants in food, their occurence and negative effects
Valchová, Jana ; Bušová, Milena (advisor) ; Holcátová, Ivana (referee)
Process contaminants are yet just a few decades known substances that naturally occur in food in some heat treatments and are dangerous to human health. There are studies demonstrating their carcinogenicity and mutagenicity. Their long-term effects on human health are not yet known. The aim of the questionnaire survey, which was part of the work, was to map the eating habits of a population sample and their knowledge of food quality and safety. Questions have been asked about the frequency of usage of some of the risky heat treatments and the frequency of consumption of snacks and food, which often contain dangerous contaminants. Although the respondents are generally aware of the risks of some kinds of heat treatment of food such as frying, grilling, smoking and baking, the taste and smell of the diet often wins over the health safety. The issue of process contaminants is increasingly being addressed by institutions all around the world. However things that a common consumer can do for his health in this issue don't differ too much from the general recommendations on a healthy lifestyle - to use less harmful ways to heat food, to consume mainly fresh food, to eat enough fruits, vegetables and fiber and to be interested in the composition of the products which he purchases. keywords: process...
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Dietary salt intake in preschool-aged children
Prchalová, Hana ; Bušová, Milena (advisor) ; Kudlová, Eva (referee)
Dietary salt intake in preschool-aged children Abstract This work is devoted to the intake of table salt in preschool children. Although salt has an irreplaceable role in the human organism, the human population is currently struggling with its excess in diet, which can lead to complications in patiens with arterial hypertension or other chronic diseases. Since the habit to salty taste is learned, it is advisable to reduce salt intake from childhood. The aim of this work was to find out how much table salt is taken by children of preschool age and what foods are its main source. The research involved 3 kindergartens, whose main cooks wrote down the amount of salt used in cooking for 10 days, another source of information about salt in food was menus and stock picking lists from which it was possible to find out how much salt did children in kindergarten take. The second research subject was 10 children whose parents wrote down exact amount of food and salt added to meals for 1 week. Subsequently, the results were entered into graphs and evaluated.The research shows that children consume almost 3 times more salt at home than in the case of all-day meals in kindergarten. The main source of salt in the home environment and in kindergartens are bakery products, despote the reformulations are taking place, there...
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Preventive effects of folic acid in nutrition
Chalánková, Veronika ; Bušová, Milena (advisor) ; Tláskal, Petr (referee)
This thesis is focused on folic acid and its preventive effects on human health. Folic acid has many important functions in the human body and is especially important during pregnancy. It is essential for the proper development of the fetus and its adequate intake is the prevention of serious congenital malformations, such as neural tube defects, premature birth, abortion and other pathologies. The increased need for this vitamin is not easy to supplement with a regular diet. It is therefore recommended to take it in the form of food supplements (400-600 µg/day) during pregnancy and at least one month before the planned conception. For these reasons, it is necessary to focus on supporting the primary prevention of folic acid use, preferably in all fertile women. Folic acid also plays a crucial role in hematopoiesis and the main manifestation of its deficiency is megaloblastic anemia. Folic acid is further associated with the prevention of cardiovascular and cancer diseases and influencing the development of cognitive functions. The practical part of this thesis was focused on monitoring the saturation of pregnant women with this vitamin. The work contains a laboratory analysis of the content of the metabolite folic acid 5-methyltetrahydrofolate (5-MTHF) in the urine of pregnant women in order to...
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Dietary load by selected food contaminants
Hábová, Markéta ; Bušová, Milena (advisor) ; Holcátová, Ivana (referee)
This thesis deals with food from the point of view of the content of constituents, especially contaminants. The health risks associated with the consumption of contaminated foods are mentioned, and a more detailed look is given to heavy metals. The monitoring of dietary contaminant load in the Czech Republic and the method of ensuring food safety are described. Special attention is paid to the Rapid Alert System for Food and Feed (RASFF). The practical part is devoted to the analysis of the notifications in the heavy metals hazard category shared in RASFF by the member countries in the period January 2020 to April 2021. A total of 116 notifications were submitted by 16 countries, concerning 117 above-limit occurrences of heavy metals in food. 44 notifications were classified as the alert notification, 56 as the information notification and 16 as the border rejection notification. 92% of the notifications are classified as serious in the context of a risk decision. The most frequently taken measure was the destruction of the contaminated food and/or its withdrawal from the market. Mercury was the subject of 57 notifications, cadmium was cited 46 times, lead 12 times and arsenic 2 times. Cadmium was present in cephalopods (43.5%), fish (15.2%) and to a lesser extent in foods from other groups....
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Health aspects of salt in food
Wűrzová, Anna ; Bušová, Milena (advisor) ; Králíková, Eva (referee)
Sodium chloride is an integral part of our nutrition and has an important function in the metabolism of the human organism. It contains sodium which is one of the basic minerals of the body. Although the salt is necessary for our body, its excess intake leads to a number of negative health effects. The theoretical part of the thesis describes the physiological importance of sodium chloride and the negative effect of salt on the body. It also deals with legislative requirements for salt, the recommended daily doses and trends in the consumption of salt. Last but not least, inform about therapeutic nutrition and the prevention of diseases associated with excess salt intake. The aim of the work is to make an overview of the importance and use of salts and the negative health effects of excess salt in human nutrition and further laboratory verification of the salt content in selected food and compared the measured results with the data on the salt content listed on the packaging. Part of the work is sample menus with different content of salt. The assembled full-day menus using the program Nutriservis represent, how to eat properly and to follow the health recommendations for salt intake according to the WHO and at the same time contain examples of bad menus with overdue daily amount of salt. For...
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The importance of fish in human nutrition and prevention of cardivascular diseases
Škrletová, Štěpánka ; Bušová, Milena (advisor) ; Kudlová, Eva (referee)
Fish are a perfect source of high quality proteins, vitamins and minerals which are also easily digestible. Sea fish contain considerable amount of Iodine and unsaturated omega-3 acids. Unfortunately, we in Czech Republic are substantially under average in fish meat consumption compared to EU. Consumption of fish meat can prevent the occurrence of cardiovascular disease and therefore there is a recommendation to regularly consumption fish meat thanks to their favourable influences. In theoretical part of this bachelor thesis is a comprehensive overview of the information about the importance of fish meat, description of its structure, utility, consumption and potential risks. Practical part is focused on research. For evaluation of the state of consumption and level of awareness was used survey. After the results were processed, it was found that 76 % of responders is consuming fish meat and 15% of responders is more likely not to consume it. It has also been found, that the responders are mostly informed about the nutritional values of fish meat. Key words: Fish meat, omega-3, consumption, KVO, nutrition
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