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Dissertations / Theses on the topic 'Enkapsulace'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Štindlová, Jitka. "Možnosti enkapsulace přírodních antioxidantů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-216837.

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In theoretical part of this diploma thesis the basic properties of antioxidants, especially anthocyanins and phenolic compounds are described, as well as the basic features and principles of free radicals formation. The theoretical part also describes some possible ways of encapsulation of antioxidants into polysaccharide and lipid particles. In the experimental part basic characteristics of extracts from selected lyophilized fruits and vegetables (carrots, apples and mixed berries) are described. As group parameters of plant extracts the total antioxidant activity, content of flavonoids and p

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2

Smolková, Miroslava. "Enkapsulace léčiv v termocitlivých micelárních gelech." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-295704.

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Presented diploma thesis deals with drug encapsulation of Sulfathiazole (STA) in thermosensitive hydrogel composed of amphiphilic fibrous molecules of copolymer poly(D,L-lactide-co-glycolide)-block-poly(ethylene glycol)-block-poly(D,L-lactide-co-glycolide) (PLGA-PEG-PLGA). In the experimental part, the structure of the micelles which is dependent on the concentration of the default copolymer, was thoroughly described. The method of dynamic light scattering (DLS) was used to dimensionally characterize the micellar size in aqueous solution. At the same time, the Cryo-Transmission Electron Micros

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3

Kapar, Jiří. "Testování možností enkapsulace vybraných druhů makromolekul a bakterií." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2013. http://www.nusl.cz/ntk/nusl-216966.

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Presented diploma thesis is focused on testing encapsulation methods of enzymes and probiotic bacteria. In the theoretical part a summary of different encapsulation techniques used in food industry is given. Further, materials for encapsulation, above all polysaccharides are presented. Next, some procedures of encapsulation of biopolymers and microorganisms – mainly enzymes and probiotic cultures are discussed. In the experimental part methods for preparation of several types of particles based on polysaccharides and liposomes are introduced. Particles were used for encapsulation of selected h

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4

Vyskočilová, Terezie. "Enkapsulace vybraných přírodních extraktů pro využití v potravinářství." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-217067.

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This diploma thesis deals with encapsulation of natural extracts. In the theoretical part the methods of encapsulation, materials for particle preparation, as well as application of encapsulation techniques in food industry were described. In experimental part selected natural extracts of propolis, green barley and probiotics were characterized. There substances were encapsulated into alginate and chitosan. In the total of 25 types of prepared particles long-term stability in some model physiological conditions as well as in four different model foods was evaluated. Additionally, stability of

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5

Šnajdarová, Karolína. "Enkapsulace probiotik a prebiotik do výrobků pro dětskou výživu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2018. http://www.nusl.cz/ntk/nusl-376827.

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The Diploma thesis deals with designing of probiotic dietary supplement for children with strains Lactobacillus acidophilus and Bifidobacterium breve and with prebiotics. Used prebiotics were Inulin, Chia fiber, Bamboo fiber, Chlorella + Spirulina and Yakon syrup. The theoretical part is focused on probiotics, prebiotics and their biological influence. In experimental part the possibilities of encapsulation into alginate particle and lyophilisation of probiotic cells were observed to find their good form to final nutritional product for children. Several types of probiotic with addition of pre

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6

Malčíková, Hana. "Enkapsulace aktivních látek a jejich aplikace v potravinářském průmyslu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-401865.

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The Diploma thesis is focused on encapsulation of bioactive compounds which are contained in selected superfoods for the purpose of application to childrens nutrition supplements. In view of the nature of selected samples, which are seaweed, walnuts, hemp seed and flax seed, the emphasis is put on the content of omega-3 and omega-6 acids. The theoretical part introduces topic of children food, further it describes the nature of selected superfoods and last but not least it contains screening of available childrens food supplements containing omega-3 fatty acids on the market. In the experiment

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7

Hoová, Julie. "Využití technik enkapsulace k přípravě výrobků určených pro dětskou výživu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-295718.

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The Diploma thesis deals with use of selected probiotic strains Lactobacillus acidophilus and Bifidobacterium breve in different forms in food for infants. The theoretical part is focused on describing probiotics, encapsulation methods and intestinal gut microbiota of infants. Further, characterization of individual periods of infant feeding and food for infants were introduced. In experimental part the possibilities of encapsulation and lyophilisation of probiotic cells were observed. Probiotic cells were encapsulated into alginate particles. The encapsulator was used for preparation of parti

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8

Matoušková, Petra. "Využití různých technik enkapsulace k řízenému uvolňování aktivních látek v potravinářských a kosmetických přípravcích." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-234522.

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The presented doctoral thesis is focused on preparation, characterization and application of organic micro- and nanoparticles as transport systems for active components and some their complex natural sources. Active component were packed into liposomes and polysaccharide particles. As active components were used caffeine, some drugs – clotrimazole and ibuprofen, further antioxidants and vitamins. Antimicrobial herbs and spices extract, antimicrobial peptides lysozyme, nisin and other antimicrobial ingredients were encapsulated too. Encapsulation of selected hydrolytic enzymes was tested, too.

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9

Pražáková, Jana. "Stanovení nikotinu v různých typech výrobků." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-217114.

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This diploma thesis deals with the determination of nicotine in different products. The theoretical part summarizes review on nicotine, smoking and opportunities how to quit. In the practical part a method for the determination of nicotine by HPLC / PDA was optimized. As the most suitable stationary phase was selected a Kinetex 5u C18 100A 150 x 4.6 mm column, as the optimal mobile phase was chosen a pure methanol with a flow rate of 1 ml min-1 and a temperature of 25 °C. For the analysis of nicotine were chosen: 18 kinds of cartridges for electronic cigarettes, two kinds of nicotine gum, nic

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10

Hazuchová, Eva. "Produkce mikrobiálních enzymů a jejich stabilizace enkapsulací." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2016. http://www.nusl.cz/ntk/nusl-240777.

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The present thesis deals with the production of microbial enzymes and their subsequent stabilization through encapsulation. The theoretical part focuses on microbial enzymes, especially extracellular hydrolases, their producers and characteristics. Within the theory is also discussed the possibility of the application of enzymes in the field of pharmacy and medicine. Experimental work was focused on the actual production of microbial enzymes and methods for their to stabilization. The production of proteolytic and lipolytic enzymes in dependence on time and the used culture substrate were foll

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11

Karásková, Iva. "Využití mikroenkapsulace při vývoji hydrogelových nosičových systémů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316196.

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This diploma thesis deals with application of microencapsulation techniques in development of hydrogel controlled-release systems in which the main role is played by humic acids, biopolymer chitosan, compound fertilizer NPK and 3-indoleacetic acid. This paper continues my bachelor thesis topic about utilization of polyelectrolyte complexes. The aim of this work was to develop a literature review focusing on the microencapsulation techniques and according to its results optimize the method. Microencapsulation was performed with a commercial encapsulator BUSCHI B-395 Pro and a release of individ

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12

Janhuba, Filip. "Charakterizace specifických proteinů z vybraných živočišných produktů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-217064.

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The master's thesis is focused on study of specific protective proteins from animal products. Two different types of antimicrobial egg white proteins were studied in detail - antimicrobial protein ovotransferrin (conalbumin) and enzyme lysozyme. Ovotransferrin belongs to transferrin group of proteins and exhibits activities similar to milk protective protein lactoferrin. The main effects of ovotransferrin are antiviral, anticancer and immunomodulatory. Antimicrobial activity of ovotransferrin based on the possibility to bind iron is still a subject of interest. For comparison the second egg pr

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13

Bokrová, Jitka. "Příprava enkapsulovaných enzymů pro využití v kosmetice." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-217068.

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Presented diploma thesis is focused on testing of an appropriate form of encapsulated enzymes intended for application in cosmetic and pharmaceutical industry. For encapsulation, proteolytic enzymes bromelain, papain and collagenase were used. These enzymes were encapsulated into alginate and chitosan microparticles prepared by an encapsulator and packed into liposomes. Encapsulation effectiveness was evaluated by analysis of total proteins. Particles stability was evaluated in model and real conditions by photometrical analysis of released proteins. Proteolytic activity of released enzymes in

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14

Šmídová, Veronika. "Izolace a charakterizace přírodních aktivních látek a možnosti jejich aplikace při přípravě doplňků stravy." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-444533.

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The diploma thesis is focused on the characterisation and isolation of naturally occurred active compounds, especially on lipophilic compounds. The next part of the thesis deals with enzymes and their encapsulation into alginate particles to suggest new enzymatic dietary supplement for children with optimal nutrient composition. The theoretical part is focused on the issue of child nutrition, accordingly the necessary nutrients that children need to grow without any health difficulties. It is also focused on the availability of enzymatic food supplements for children. Finally, the theoretical

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15

Pavelková, Renata. "Příprava a charakterizace biomateriálů s obsahem aktivních přírodních UV filtrů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316148.

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This presented diploma thesis is focuses on preparation and characterization of biomaterials with natural UV filters. The theoretical part is aimed at effects of sunlight on the skin and how to avoid these effects by using cosmetic products. The materials and methods for extraction of lipid part of the selected vegetable and microorganism species and methods for preparation and characterization of nanoparticles and emulsions were characterized. The practical part deals with extraction of lipid part of selected vegetable and microorganism species. The liposome particles with encapsulated active

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16

Patočková, Klára. "Charakterizace nápojů a doplňků stravy obsahujících kofein." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-217065.

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This master thesis is focused on characterization of some energy drinks and formulation of their modified composition. The theoretical part was focused on summary of energy drinks and some of their natural components - guarana, goji as well as on techniques of encapsulation. In the experimental part concentrations of caffeine, vitamin C, polyphenols and carbohydrates in commercially purchased drinks was evaluated. Subsequently, three kinds of particles (particles with caffeine, particles with guarana and particles with guarana and goji) by 6 different techniques were prepared. The efficiency o

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17

Vysoká, Marie. "Vývoj energetických nápojů nového typu s obsahem přírodních aktivních složek." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316171.

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The aim of this thesis is the development and preparation of a new energy drink. The theoretical part of the thesis focuses on the comparison of the drinks available in market, the presentation of the main active ingredients and the proposal of enriching the new energy drink. It also describes the possibility of using an encapsulation and the method used to determine specific compound in energy drink or encapsulated particles. In the experimental part of the work, at the beginning, the main content of energy drinks were characterized, for instance caffeine, sugar, polyphenol and vitamin C. Sub

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18

Laníková, Petra. "Studium vlivu lipozomálních platinových cytostatik na nádorové buňky pomocí voltametrických metod." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-316850.

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Aim of this thesis is voltammetric study influence of liposomal platinum cytostatics on cancer cells. One of the goals is summarize available informations about influence of cisplatine on cancer cells, its encapsulation into liposome and affection of this cytostatic cisplatin encapsulated in liposome on cancer cell lines. In literary recherche is detail description of these issues. Than is there specification of voltammetric methods, which serve to electrochemical detection of cisplatin. Based on literary recherche was chosen the best method for detection and subsequently the method was optima

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19

Bokrová, Jitka. "PŘÍPRAVA A VYUŽITÍ VYBRANÝCH BIOPOLYMERŮ, NANOČÁSTIC A NANOVLÁKEN PRO KOSMETICKÉ A POTRAVINÁŘSKÉ ÚČELY." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-402107.

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The presented doctoral thesis is focused on preparation of nanoparticles and nanofibers with natural active ingredient and testing their biological effects. Modern types of application forms were prepared from biomaterials based on one or more natural polymers. Chitosan particles were prepared from cross-linked polymer using ultrasonication. A mixture of soy lecithin and cholesterol was used for preparation of liposomes. Poly-3-hydroxybutyrate was used for preparation of combined liposomes, too. All liposome particles were prepared by ultrasonication. Nanofibers were obtained from polyhydroxyb

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20

Vejrostová, Petra. "Studium směsných přírodních antimikrobiálních preparátů a možnosti jejich stabilizace." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2016. http://www.nusl.cz/ntk/nusl-240734.

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Present diploma thesis is focused on natural antimicrobial substances. The aim of the experimental part of thesis was testing of antimicrobial activity of selected natural substances in free and encapsulated forms, preparation of particles and monitoring of their long-term stability. Various teas extracts (aqueous, ethanoic and DMSO) and aqueous herbs extracts were used as plant antimicrobial substances. Liposomes and chitosan particles with encapsulated aqueous teas extracts were prepared by ultrasonication. Encapsulation efficiency, size, stability and antioxidant activity for all particles

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21

Dudrová, Markéta. "Přídavek probiotické složky do výrobků pro dětskou výživu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-449729.

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This Diploma thesis deals with preparation of probiotic cultures Lactobacillus acidophilus, Lactobacillus casei and Bifidobacterium breve enriched with prebiotics meant for application in baby food products. Natural extracts from matcha, moringa, young beat, young barley, chlorella and spirulina were selected as prebiotics. The theoretical part is focused on probiotic bacteria, their biological effects and their effects on the child´s body. The experimental part deals with the cultivation of probiotic bacteria with plant extracts, monitoring their viability and stabilization in an encapsulated

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22

Durďáková, Michaela. "Protinádorová aktivita a cílená doprava rutinu." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-427862.

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The diploma´s thesis “Antitumor activity and targeted transport of rutin” deals with the effect of flavonoid rutin on tumor and non-tumor cells. The thesis is divided into the theoretical part and practical part. The theoretical part deals with rutin itself, tumor diseases and nanocarrier apoferritin. The practical part has three main parts. The first one deals with the properties of the rutin itself, its stability for storage and stability in solutions simulating distinct physiological environments. Furthermore, toxicity of rutin for tumor and non-tumor cells and the effect on the expression

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23

Jindrová, Zuzana. "Aktivity hemocytů plovatkovitých plžů a jejich změny způsobené nákazou trichobilharziemi." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-323587.

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Molluscs as well as all other invertebrates rely on innate immune response only. Their internal defense system is capable of destroying most pathogens. However, there are some exceptions, e.g. some snails serve as intermediate hosts for some trematodes. Trematodes are able to develop inside these snails due to intervention in the snail internal defense system. The submitted thesis describes hemocyte activities of two lymnaeid snails, Lymnaea stagnalis a Radix lagotis, and the influence of Trichobilharzia regenti infection on R. lagotis hemocytes. Hemocytes of both species exposed to various ch

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24

Kocurová, Kateřina. "Optimalizace mikroemulzních koncentrátů vhodných pro enkapsulaci do měkkých želatinových tobolek." Master's thesis, 2011. http://www.nusl.cz/ntk/nusl-313289.

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Charles University in Prague, Faculty of Pharmacy in Hradec Králové Department of: Pharmaceutical Technology Consultant: Doc. PharmDr. Zdeňka Šklubalová Ph.D., PharmDr. Tomáš Andrýsek Ph.D., MBA Student: Kateřina Kocurová Title of Thesis: Optimalization of microemulsion pre-concentrates suitable for encapsulation into soft gelatin capsules. The theoretical part of this study focuses on microemulsions, liquid crystals and gelatin capsules. The scope of the experimental part was the preparation of a mixture for soft gelatin capsules. The mixture contained Maizin 35-1 and/or Polyglycerol-3-oleate

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25

Murmiliuk, Anastasiia. "Multidimenzionální charakterizace polyelektrolytů a interpolyelektrolytových komplexů ve vodných roztocích." Doctoral thesis, 2021. http://www.nusl.cz/ntk/nusl-438407.

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Multidimensional characterization of polyelectrolytes and interpolyelectrolyte complexes in aqueous solutions Abstract: This PhD thesis is dedicated to the study of polyelectrolytes and their self-assembly in aqueous solutions. The morphology and ionization state of individual polymer chains were investigated as well as their co-assembly with oppositely charged species. First, the charge regulation of short and long weak polyelectrolytes in aqueous solution was investigated to deeper understand their pH-responsive properties. The changes of ionization degree and charge of oligopeptides compose

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