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Utilization of bees products in cosmetics
Kobza, Martin ; Bednář, Michal (referee) ; Zemanová, Jana (advisor)
This bachelor thesis is focused on the problem of utilization of bees products in cosmetics. The aim of this thesis was to elaborate a literature review focused on individual bee products, their properties and their utilization in cosmetics. Honey, beeswax, propolis, pollen, royal jelly, apisin are said to be the bee products. Properties, utilization, determination of kvalitative properties and aplication into cosmetic products of individual bee products are mentioned in this thesis. Beeswax is used in production of lipsticks, creams and for basis of smears (oily creams). Royal jelly is aplicated into lotions, face masks, lipsticks, night creams, hair waters, hydration preparations etc. Honey is used for preparation of shower gels, soaps, body milks, hydration creams. Propolis is added into creams, body milks, body lotions, shampoos, lipsticks, soaps and mouth sprays. Pollen has significant content of vitamins, aminoacids and other substances in nature form for cosmetics. These substances are important for nutrition, regeneration and hydration of skin. Apisin is used in pharmacologic preparations, like healing creams and smears.
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Food and pharmacy views about honey.
Rýdlová, Vanda ; Vítová, Eva (referee) ; Šalplachta, Jan (advisor)
This bachelor thesis is focused on honey and products produced by bees. It deals with creation, composition, conditions for storage and classification according to origin, processing and packaging. It summarizes the history of honey, bee products and variety of their usage. The main focus is on pollen, royal jelly, bees-wax, propolis and bee venom. One part describes the legislative requirements relating to the quality of honey. There is also a chapter of indicators of honey quality, when applying the knowledge in practice is necessary to recognize poor quality product. A part deals with worldwide amount of bees colonies, czech producers of honey and possible counterfeit of honey.
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Optimization of preparation and characterization of hybrid hydrogels with respect to viscoelastic and flow properties
Zhurauliova, Darya ; Kalina, Michal (referee) ; Smilek, Jiří (advisor)
This bachelor thesis focuses on the study of hybrid hydrogels that combine the properties of the hydrogel system together with oleogels, which is a gel on the base of oil. The aim of the thesis is to carry out a study of the current state of the solved issue on the topic of preparation of hybrid hydrogels, on this basis to design and optimize the appropriate procedure of preparation and in the form of viscoelastic measurements to perform the basic reological characterization of the prepared systems. A system based on sodium alginate dissolved in deionized water and meshed with calcium chloride solution was chosen as a suitable hydrogel system, and a system based on beeswax dissolved in sunflower oil was chosen as oleogel. Sodium alginate has been chosen because it is used as a thickener, emulsifier, stabilizer or gelling agent in the creams and preparation of pharmaceutical forms. By mixing hydrogels and oleogels of different proportions, a hydrogel/oleogel system, also called bigel, was created, the properties of which were tested in terms of flow and viscoelastic properties. In the practical part, amplitude, frequency and flow tests of both the hydrogel itself and the hybrid hydrogel with a ratio of 50:50 (hydrogel vs. oleogel) were measured. These tests provided information on gel preparations, i.e. what is their character, what are the mechanical properties and how it depends on the amplitude of deformation. By comparing the measurement results, it was possible to determine how oleogel acts on the properties and structure of the hydrogel.
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Optimization of preparation and characterization of hybrid hydrogels with respect to viscoelastic and flow properties
Zhurauliova, Darya ; Kalina, Michal (referee) ; Smilek, Jiří (advisor)
This bachelor thesis focuses on the study of hybrid hydrogels that combine the properties of the hydrogel system together with oleogels, which is a gel on the base of oil. The aim of the thesis is to carry out a study of the current state of the solved issue on the topic of preparation of hybrid hydrogels, on this basis to design and optimize the appropriate procedure of preparation and in the form of viscoelastic measurements to perform the basic reological characterization of the prepared systems. A system based on sodium alginate dissolved in deionized water and meshed with calcium chloride solution was chosen as a suitable hydrogel system, and a system based on beeswax dissolved in sunflower oil was chosen as oleogel. Sodium alginate has been chosen because it is used as a thickener, emulsifier, stabilizer or gelling agent in the creams and preparation of pharmaceutical forms. By mixing hydrogels and oleogels of different proportions, a hydrogel/oleogel system, also called bigel, was created, the properties of which were tested in terms of flow and viscoelastic properties. In the practical part, amplitude, frequency and flow tests of both the hydrogel itself and the hybrid hydrogel with a ratio of 50:50 (hydrogel vs. oleogel) were measured. These tests provided information on gel preparations, i.e. what is their character, what are the mechanical properties and how it depends on the amplitude of deformation. By comparing the measurement results, it was possible to determine how oleogel acts on the properties and structure of the hydrogel.
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Voskové směsi pro restaurování historických voskových pečetí
Bílková, Lenka ; Bartl, Benjamin ; Urbánek, Štěpán ; Zapletal, Martin ; Holakovská, Libuše
A large number of historic wax seals have been preserved in a fragmented state, which is linked to the increase in hardness and brittleness that sealing waxes undergo during natural ageing. The immediate cause of mechanical damage is careless handling or improper storage of archival records. This methodology compares the properties of both traditional and some alternative wax mixtures that are applicable for conservation of damaged seals. The aim is to highlight the advantages and disadvantages of using each of them, making it easier for conservators to choose a material that will meet their specific requirements. Chapter 2 first discusses the general requirements for such materials, from a technological, practical and ethical point of view. Chapter 3 deals with the properties of beeswax and the possibilities of their modification by the addition of other substances. Chapter 4 then discusses the new possibilities that open up the use of fossil wax mixtures. The chapters are supplemented by specific examples and recommendations.
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Povrchová úprava pažeb loveckých zbraní
Pavka, Jan
This bachelor thesis deals with the selection of the most appropriate type of surface finish for hunting rifle butts. Samples of ash tree, beech tree and walnut tree were used for the testing of properties of surface finishes. The application of surface finishes was carried out by means of tung oil, beeswax mixed with turpentine and Alkyd resin varnish. These substances were further tested according to the standardized testing procedures. The goal of this thesis is to discover the properties and measure the resistance of the above-mentioned substances and their practical usability. The thesis contains price evaluation, adhesion tests of the priming coat, resistance tests for scratches, cold liquids, dry and moist heat and abrasions and measurements of the surface finish thickness, gloss, colouring and firmness. The measurement of surface finish firmness is also done by means of special pencils.
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Quality of honey depending on processing technology
Fejt, Jaroslav ; Bušová, Milena (advisor) ; Luboš, Luboš (referee)
This diploma thesis is aimed at assessing the impact of using multiple technologies or practices on the quality of honey. The theoretical part includes a summary of the main methods currently used for assessing the quality of honey and/or establishing its origin. The suitability of the selected apicultural (beekeeping) technology, apiary placement, handling bee honeycombs and facilities for extraction of honey present the first condition for obtaining quality honey without pesticides, air pollutant microparticles, hazardous elements, microorganisms, volatile pollutants of coating substances, antibiotics, drugs used against varroa destructor parasites and their residues. There are mentioned all the known bactericidal and bacteriostatic properties of honey to help preserve its natural quality features without degrading changes.
In the practical part there are two groups of honey samples collected from own hives in 2015. Those were sent for analysis to the Institute of beekeeping in Dol (Czech Republic). In 2016, ten samples from beekeepers and ten from retail markets were used. Their partial analysis was carried out at the Department of Agricultural Product Quality. The samples were obtained in a conventional manner using modern honey extractors and in the second case by pressing. The above mentioned samples were tested for water content, HMF, conductivity, glucose, fructose, sucrose, starch and caramel colorants, titration factor, Fiehe´s honey violation by starch sugar or sweetener.
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Food and pharmacy views about honey.
Rýdlová, Vanda ; Vítová, Eva (referee) ; Šalplachta, Jan (advisor)
This bachelor thesis is focused on honey and products produced by bees. It deals with creation, composition, conditions for storage and classification according to origin, processing and packaging. It summarizes the history of honey, bee products and variety of their usage. The main focus is on pollen, royal jelly, bees-wax, propolis and bee venom. One part describes the legislative requirements relating to the quality of honey. There is also a chapter of indicators of honey quality, when applying the knowledge in practice is necessary to recognize poor quality product. A part deals with worldwide amount of bees colonies, czech producers of honey and possible counterfeit of honey.
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Utilization of bees products in cosmetics
Kobza, Martin ; Bednář, Michal (referee) ; Zemanová, Jana (advisor)
This bachelor thesis is focused on the problem of utilization of bees products in cosmetics. The aim of this thesis was to elaborate a literature review focused on individual bee products, their properties and their utilization in cosmetics. Honey, beeswax, propolis, pollen, royal jelly, apisin are said to be the bee products. Properties, utilization, determination of kvalitative properties and aplication into cosmetic products of individual bee products are mentioned in this thesis. Beeswax is used in production of lipsticks, creams and for basis of smears (oily creams). Royal jelly is aplicated into lotions, face masks, lipsticks, night creams, hair waters, hydration preparations etc. Honey is used for preparation of shower gels, soaps, body milks, hydration creams. Propolis is added into creams, body milks, body lotions, shampoos, lipsticks, soaps and mouth sprays. Pollen has significant content of vitamins, aminoacids and other substances in nature form for cosmetics. These substances are important for nutrition, regeneration and hydration of skin. Apisin is used in pharmacologic preparations, like healing creams and smears.
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Medical properties of bee products
BLÁHOVÁ, Jana
Bachelor thesis is focused on the therapeutic properties of bee products. It forms a comprehensive overview of the use of bee products in the pharmacy. It describes the chemical composition and formation of bee products and improved disease and cured using Apitherapy. The thesis mentions possible contraindications of bee products.
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