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Encapsulation of vitamins and provitamins into nanoparticles
Martinusíková, Katarína ; Wikarská, Monika (referee) ; Skoumalová, Petra (advisor)
This bachelor thesis is focused on the encapsulation of vitamins in liposomes and the subsequent observation of the properties of this form. The theoretical part is focused on the history of vitamins, their classification into groups, but mainly the general characterization of all vitamins. It describes their function in the human body, the consequences of their deficiencies and also the sources of their income. It also describes the technique of encapsulation in liposomes and their characterization and use in the food industry. The experimental part is focused on the preparation of specific liposomes of vitamins and their mixtures. These prepared liposomes are subsequently characterized by properties such as size, stability and encapsulation efficiency. Long-term stability of prepared liposome particles over 2 and 5 weeks were also investigated. In the conclusion of this thesis are summarized all the results of observations and the subsequent suggestion of the possible use of this technique in food products.
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Encapsulation of vitamins and provitamins into nanoparticles
Martinusíková, Katarína ; Wikarská, Monika (referee) ; Skoumalová, Petra (advisor)
This bachelor thesis is focused on the encapsulation of vitamins in liposomes and the subsequent observation of the properties of this form. The theoretical part is focused on the history of vitamins, their classification into groups, but mainly the general characterization of all vitamins. It describes their function in the human body, the consequences of their deficiencies and also the sources of their income. It also describes the technique of encapsulation in liposomes and their characterization and use in the food industry. The experimental part is focused on the preparation of specific liposomes of vitamins and their mixtures. These prepared liposomes are subsequently characterized by properties such as size, stability and encapsulation efficiency. Long-term stability of prepared liposome particles over 2 and 5 weeks were also investigated. In the conclusion of this thesis are summarized all the results of observations and the subsequent suggestion of the possible use of this technique in food products.
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Charakteristika a metody stanovení vitaminů v masozeleninových přesnídávkách určených pro dětskou výživu
Piechowiczová, Markéta
Bachelor thesis Characteristics and methods for determination of vitamins in meat-vegetables purées intended for baby food was focused on acquiring general knowledge about child nutrition, with regard to adequate intake of vitamins in the diet, which are then characterized, together with methods of their determination. In the first part there are described particular periods of nourishment until 12th month of life. Nourishment recommendations are summarized here, more specifically required nutrients in this age, but also issues concerning allergies, alternative nourishment and some diseases, which can lead to hypovitaminosis. The second part is devoted to the characteristics of vitamins. Chemical properties, effect on the body, occurrence in foods and the recommended daily intake are included. The chapter about occurrence in food is always accompanied by the recommendation of ingredients with a high content of vitamins, which are appropriate to add to complementary food. In the last part of thesis the methodology for determination of vitamins are summarized in the light of the newest trends. These methods include chromatographic methods, spectrophotometric,fluorimetric, polarographic, microbiological and capillary electrophoresis.
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