|
|
Functional foods in human nutrition
ZEVLOVÁ, Veronika
Bachelor thesis deals with functional food and their role in human nutrition. The history of functional food, their characteristics, components, evaluation of individual species and the impact on the health of the consumer is described here. A lot of researches are focused on the topic of functional food, but no legally definition have been established yet. Even in the Czech Republic or the EU. Only the certain designations are used, which have a small deviations in different countries. Functional foods can be formed in different ways. It´s the elimination of certain harmful substances, a modification, but the most commonly used method is to add some substance to food. These substances may have various origins. The most commonly used are probiotics and prebiotics, antioxidants, anticarcinogens, fiber and many more. As the types of functional food there are mentioned cereals and products made from them, as well as meat and meat products, fruit and vegetables, vegetable fats, foods from stevia and very important probiotic food. Then the study focuses on the behavior of these types of food in prevention of civilization diseases, namely diabetes, obesity, hypertension, non-alcoholic fatty liver disease and the Alzheimer´s disease. Subsequently, this section deals with the importance of functional food for particular population groups. Attention is given to children, the elderly, pregnant women and athletes.
|
|
|
Importance of probiotics and prebiotics in human nutrition
ŠEVČÍKOVÁ, Tereza
This thesis deals with probiotics, prebiotics and the composition of intestinal microflora. The importance of intestinal microflora has long been underestimated. With the development of science the knowledge of its positive benefits and composition has been extended. Bacteria forming intestinal microflora are twofold. The "good" ones, which help in the fight against many diseases, and the "bad" ones that cause various diseases. Health beneficial bacteria which are also used to produce probiotic foods and supplements, are mainly of the Lactobacillus, Bifodobacterium, Enterococcus and Streptococcus genera. Probiotics and prebiotics are an important part of the new science discipline of "Functional food". Probiotics are live microorganisms which when administered in adequate amounts, provide a health benefits to the host. Its function help to maintain the balance of the gastrointestinal tract. The imbalance is associated with diarrhea, urinary tract infections, muscle pain and fatigue. Probiotics also have an impact on the immune system. When the immune system isn't working properly, allergic reactions, autoimmune disease (eg, ulcerative colitis, Crohn's disease and rheumatoid arthritis) and infections (eg, infectious diarrhea, Helicobacter pylori infection, skin infections and vaginal infections) may appear. Furthermore, probiotics and prebiotics contribute to the prevention of obesity, lower cholesterol levels, blood sugar levels, thereby helping with the fight against diabetes type 2 and they also help to prevent colon cancer. Furthermore, instituted or renewed balance of the microflora colonic, increases resistance to colonization of the colon microorganisms that cause diarrhea, reduce intolerance against the milk carbohydrate lactose in persons affected by this disorder, increase calcium absorption, synthesis of some vitamins and some probiotics produce bacteriocins, which are the proteins and peptides inhibiting pathogenic bacteria. On the contrary, prebiotics are indigestible food components, that beneficially affect the health of the host and selectively stimulate the growth and / or activity of one or a limited number of bacteria in the colon. They are very often used as a prebiotic oligosaccharides, which occur naturally in many kinds of vegetables and fruits.
|
|
| |
|
| |
|
| |
|
|
Probiotic bacteria in dairy products
KORANDOVÁ, Květa
Probiotic microorganisms are live organisms that facilitate optimal composition of intestinal flora. The thesis deals with the positive influence of probiotic microorganisms on human health. It describes the most frequently used bacteria family, which includes Lactobacillus, Lactococcus, Streptococcus and Bifidobacterium. The thesis also deals with health, microbiologic and technological requirements necessary for probiotic effectiveness. It offers an overview of characteristics of products containing probiotic microorganisms, which include pharmaceuticals and selected functional food. In the food group, the thesis particularly focuses on fermented milk products.
|
|
| |
|
| |
|
| |
|
|
Possibilities of the application of supplemental and nonconventional methods in prevention and health care in calves
KONRÁDOVÁ, Petra
Diarrheal diseases of calves are one of the most serious risks of rearing calves and cause economic losses. For this reason, the objective of this work was to assess the influence of means of support in operating conditions for the incidence of diarrheal disease in calves in the early post-weaning stages. A company was chosen for this work in which both the company employees and an external veterinarian were willing to collaborate and provide not only information about the breed in question, but also biological material. This company was JINOS - AGRO Veselí nad Lužnicí. The calves were observed in the period of April - June 2009. The calves were housed in separate boxes the second day after birth until the average age of 56 days. After storage, they were divided into 5 groups: 4 based on the chosen means of support, and a single control group. Faeces samples were collected from the calves and subsequently evaluated. The calves to whom were administered means of support were then evaluated to assess the effect thereof on the incidence of diarrhea, the duration of diarrhea, the method of treatment, and the duration of treatment. The results were summarized and analyzed using a statistical program (STATISTICA 7.0.). There was no statistically significant difference found between the individual groups and the experimental group. An evident and statistically significant difference was found only in the case of a difference between the drugs of the 2 experimental groups, specifically between Lactovita and Homeopatika. Based on this observation, it can be stated that there was no evidence supporting the effectiveness of administered means of support for the incidence of diarrheal disease in calves in the early post-weaning stages.
|
guest ::
