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Evaluation of selected dietary supplements - climacterium
Tobolková, Blanka ; Vránová, Dana (referee) ; Zemanová, Jana (advisor)
A dietary supplement is a product that contains nutrients (e.g. vitamins, minerals, herbs, amino acids or fatty acids) intended to supplement the diet. The aim of the diploma thesis was to suggest a prescription for preparation of three types of dietary supplements which are used to reduce of climacteric symptoms, their production and determination of energetic (nutrition) value on account of detected content of proteins, fats and saccharides in dietary supplements. A part of the diploma thesis was to suggest suitable wrapping and price of prepared dietary supplements. The three dietary supplements were used for analyses, namely capsules, herb syrup and herb drops. The content of proteins was determined by Kjeldahl´s method, total fats were determined by Soxhlet extraction and saccharides were determined by titration with potassium permanganate (Bertrand´s method). Dietary supplements in form of capsules were particular analysed on content of heavy metals (lead, cadmium and arsenal). In herbal drops was in addition determined alcohol content (ethanol). There was from the measured data found out, dietary supplement in form of capsules was chosen as the product with the lowest energetic (nutrition) value.
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In vitro study of antioxidant activity of food supplements
Vopelková, Dominika ; Pořízka, Jaromír (referee) ; Omelka, Ladislav (advisor)
Bachelor thesis deals with the determination of antioxidant activity of food supplements in vitro. The theoretical part focuses on legislative requirements of food supplements, their characteristic and classification. Further, the attention is also devoted to antioxidants, their properties, effects, importance and utilization. Separate chapter describes herbs, which are an essential component of researched supplements, their effects and properties. For experimental part several food supplements in various forms (capsule, tea, juice, dried fruits) were chosen and total content of polyphenols was determined using the UV-VIS spectroscopy. Further, the total antioxidant activity is characterized by electron paramagnetic resonance involving DPPH method.
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Probiotic lactic acid bacteria in food products
Sásková, Denisa ; Rittich, Bohuslav (referee) ; Španová, Alena (advisor)
In food industry molecular genetic methods based on DNA analysis are used for identification of probiotic microorganisms. An example of these methods is the polymerase chain reaction, in which specific fragments of DNA are amplified using short oligonucleotide primers. The teoretical part of this bachelor thesis follows probiotic bacteria, their features, beneficial health effects and use in food and clinical applications. The experimental part of the thesis focuses on an analysis of two probiotic dietary supplements. DNA was isolated from these products by method of phenol extraction. The use of PCR confirmed the presence of DNA of probiotic bacteria of genera Lactobacillus and Bifidobacterium.
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Consumer protection in the food supplements area
Luptáková, Marcela ; Vavrečka, Jan (advisor) ; Grmelová, Nicole (referee)
The topic of this diploma thesis is the Consumer protection in the food supplements area. The work has been devided into three parts. The first part is devoted to the overview about categorization of the products with the impact on health. This part of this work also includes the elementary terms, which are: food, food supplements, medicinal products, cosmetics products and medical devices. The second chapter is devoted to the matter of food supplements as such. The third chapter deals with the terms health and nutrition claims. The last chapter includes the survey between the consumers of the food suplements and also the survey between the pharmacies.
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Výživa sportovců v porovnání s běžnými stravovacími zvyklostmi
Piknerová, Tereza
Correct nutrition is one of the most important things that help both in sports and in everyday life. In sports it is not enough to train hard; one must also eat properly and follow proper fluid intake principles. If adequate intake of nutrients is guaranteed, the performance will be noticeably better. A properly balanced diet plays a very important role even in everyday life. It promotes physical and mental balance and positively affects people's overall health. Recently, nutrition has appeared in the limelight and more and more people are concerned with what they eat. This Bachelor's thesis provides information on proper diet, both in sports and everyday life, and also informs about the correct fluid intake, food supplements and other interesting points in this field.
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Food supplements and iodine supplementation in pregnancy
VAVROUŠKOVÁ, Edita
Iodine is a trace element tremendously important for thyroid gland hormone production. It affects normal evolution of brain, especially in the time of intrauterine development and in the first year of child's life. Deficiency of iodine can lead to creation of pregnancy goiter, it also decrease the probability of carrying fetus to term and increase the probability of disorder in psycho-motoric evolution of child. Czech Republic is geographically lined up among the regions with lack of iodine in natural sources and food. However, nowadays the iodine deficiency is considered to be managed. But risk groups of population still exists, especially pregnant women can be endangered by lack of iodine, because the need of iodine intake in pregnancy increases to 200 250 ug per day and this level must be ensured. Consumption of food rich in iodine can cover the increased need of iodine. Significant source of iodine is milk and milk products. Another source is table salt enriched with iodine, but its daily intake is limited. Rich sources of iodine like sea fish, sea products and seaweed rarely occur in our diet. The goal of thesis was to evaluate intake of dietary supplements with iodine by pregnant women and evaluate women's awareness of higher iodine need and iodine food sources. Quantitative research in form of questionnaires was chosen for getting information from higher number of individuals. The questionnaire consists of 15 questions. Answers were gained from 118 respondents living in Central Bohemia, Moravia-Silesia region, Liberec region, region Highlands and South Bohemia. Questionnaire was distributed to gynecological ambulances by employees of State health institution. I visited gynecological ambulances in South Bohemia personally. By evaluation of questionnaire was found out that dietary supplement with iodine use 63 % pregnant women in researched population. All respondents always use only one type of dietary supplement. Among the most used belong "Chytré miminko", "GS mamavit" and "Femibion 800". 68 % of respondents know the importance of higher iodine intake in time of pregnancy. Question about daily recommended dosage was correctly answered only by 35 % of respondents. As a food sources of iodine the pregnant women know sea fishes, sea products, seaweed and table salt enriched with iodine. But 90 % of respondents are not familiar with milk and milk products as important source of iodine. Pregnant women should be better informed about importance of sufficient supply of iodine and about sources of iodine by gynecological ambulances. Information about mentioned issues should occur in magazines, education materials and internet articles more often. Respondents were notified of issues and important role of iodine in time of pregnancy by questionnaire. It is very probable that women found correct answers on the internet or in publication for expectant mothers after filling in the questionnaire.
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Food supplements and iodine supplementation breastfeeding women
IVANOVÁ, Markéta
Iodine is a trace element that is essential for the production of thyroid hormones triiodothyronine and thyroxine. Iodine deficiency had in the past result in many serious diseases and disorders. At present is in the Czech Republic considered mastered. However, Iodine deficiency are vulnerable to specific groups of the population, including pregnant and nursing women, because of their need and the recommended daily dose of iodine is increased. Breastfeeding women should receive adequate amounts of dietary iodine for optimal saturation for themselves and their child. Otherwise, exposing themselves and their child risk of diseases and disorders of iodine deficiency. Increased supply of iodine can be replaced by eating foods rich in iodine. In the event that you cannot increase intake of iodine - rich food preferences in iodine, there are various supplements that contain iodine. The aim of this thesis was to evaluate the intake of iodine supplements and supplements in nursing women and breast-feeding women to assess the awareness for greater needs of iodine and food iodine sources. There were set up the three research questions: How many nursing women used to supply iodine supplements and supplements?, What is the awareness of breastfeeding women need more iodine? and What is the awareness of breastfeeding women about dietary sources of iodine? A quantitative research strategy was used for the implementation of the research. The method used for data collection was made by an anonymous questionnaire. A questionnaire was handed in a printed copy to pediatricians and gynecologists in the southern Bohemia. With the doctors help were invited nursing women to fulfill the questionnaire. Part of the women was invited to complete the questionnaire directly. The research sample consisted of 117 female respondents. The research shows that 62 % of breastfeeding women know why it is important to increased need for iodine during lactation. But only 9 % of women know all the risks of iodine deficiency on the mother mentioned in the questionnaire and only one new mother knows all risk of iodine deficiency for infants listed in the questionnaire. The recommended daily intake of iodine properly reported or estimated 40.2 % of women. It turned out that 46 % of respondents from the research group used food supplements and supplements containing iodine. Each of these respondents used only one preparation with iodine. The most commonly used products were: GS mamavit, a Smart baby and Femibion 400 and Gravital. 43 % of respondents had used a dietary supplement containing iodine from the beginning of pregnancy and in 57 % of the respondents were informed about food supplements through a doctor (gynecologist, pediatrician). The results showed that awareness of breastfeeding women about food sources of iodine is not good. 67 % of women know that settlement higher needs iodine during lactation is possible by eating foods rich in iodine, but all food sources of iodine in the questionnaires (sea fish, seafood and seaweed, iodized salt, and milk and dairy products) registered only one respondent. 39 % of women known as a rich source of iodine, seafood, seafood and seaweed, iodized salt , but none of them knew that the rich and a good source of iodine is also milk and dairy products. Based on the results of the work would be desirable to issue educational print disabled educational material that could be used to increase awareness of not only women who are breastfeeding, pregnant women as well as the higher of the recommended daily dose of iodine and what foods to include in your diet in order to pay the increased intake of iodine. Provide information on supplements containing iodine, which can add missing quantities of iodine, what products are available and what are the currently preferred by nursing women.
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Dietary supplements and iodine supplementation for children 11-12 years in the Czech Republic
HALÁSZOVÁ, Monika
Bachelor Thesis called "Dietary supplements and iodine supplementation for children 11-12 years in the Czech Republic" deal with the intake of dietary supplements containing iodine and intake of other significant dietary sources of iodine in relationship to saturation with iodine in the monitored group of 300 children aged 11-12 years . The thesis is divided into theoretical and practical part. Theoretical part deal with established issues in light of current situation and uses the knowledge of specialized literature in these areas: iodine and his dietary sources, influence of deficient or excessive intake of iodine on thyroid gland and its function, and also the solution to iodine deficit in Czech Republic. The thesis also deals with dietary supplements and nutrition of school-aged children. Practical part is focused on quantitative research. This research was done on selected group of children who had low level of ioduria (iodine in urine) according to State health institution. Statistical file included 300 children of both gender in age from 11 to 12 who live in Czech Republic. The reason why children of this age were chosen is because of importance of optimal intake of iodine in period of physical and sexual evolution. The children were divided into two groups. One group had ioduria up to 300ug/l and the second group had ioduria over 300u/l. Data were collected through questionnaire. Because of age of respondents, the questionnaire was filled in presence of at least parent. The questionnaire should have also served to parents as information about iodine importance for their children. The individual evaluation of ioduria and questionnaire was given to parents upon their request. Collected data were evaluated in Microsoft Excel. In practical part, two main goals and two research questions are set. Their task is to determine the rate of usage of dietary supplements with iodine and to find out what significant sources of iodine the children with ioduria over 300u/l take in. The milk and milk products, salt with iodine, salted delicacies, sea products and dietary supplements with iodine were observed as probable main sources of iodine intake. The first goal was to find out the amount of iodine intake from dietary supplements for previously mentioned group of children. The second goal was to find out if the dietary supplements with iodine (or any other combination of food rich on iodine) are used by observed individuals with ioduria over 300u/l. The results of research show if the respondent's level of ioduria is affected by in taking the dietary supplements or food with significantly higher content of iodine. My own research proved relatively frequent (but irregular) intake of dietary supplements with iodine by whole examined population. On the other hand, usage of dietary supplements with iodine is probably not correlated with usage of table salt without iodine or with thyroid gland illness by individual respondent or in his family. The milk and milk products and table salt with iodine proved to be the main source of iodine. According to research, children with excessive ioduria consume sources of iodine as frequent as other children. Deeper insight into results shows that reason for excessive saturation with iodine is combination of intake of dietary supplements as well as other significant food sources of iodine, especially milk and its products. By several respondents, the higher level of ioduria can be caused by higher consummation of sea products or by usage of dietary supplements with iodine in last two days. The need for better awareness about suitable rate of iodine dietary supplements intake as well as medical importance for lowering the amount of (iodine) table salt in food was discovered by research. The optimal supply of iodine by higher percent of observed population could be also achieved by optimizing the content of iodine in milk.
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Demarcation between the categories of products with physiological function on human body in EU law
Vavrečka, Jan ; Švarc, Zbyněk (advisor) ; Boháček, Martin (referee) ; Jakl, Ladislav (referee)
The thesis is focused on theoretical principles of demarcation of products with health effects in the EU law and on the reflection of these issues in the application and administrative practice in commercial law. The thesis developed yet been brought judicial interpretation with the scientific interpretation of certain key and decisive problems that separate from each other law-regimes of regulation: medicinal product for human use, foods, cosmetics products, medical devices and biocides. Correct law-regime for a particular product is determinating of the general legal basis in the EU internal market. It is therefore a important problem not only in EU law, but also in EU economic. Thesis results are highly critical of current practice in the local markets of EU member states, especially Czech Republic, and in many instances documented sub-optimal application of this law in general practice.
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