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Use of some fractions of technical hemp in cosmetics and pharmacy
Pavlištíková, Nela ; Uhlířová, Renata (referee) ; Márová, Ivana (advisor)
Hemp is known as a versatile usable plant with many industrial applications including pharmaceutical industry. The subject of this bachelor's thesis was to characterize the fractions of cannabis produced during its processing and their applications in cosmetics and pharmacy. In the theoretical part the characteristics of the plant, its chemical composition and bioactive substances are worked out. In the experimental part, some metabolites present in hydrolysates of hemp flour and hemp sludge were determined. All fractions were obtained from the Santhica variety. In the samples the content of carbohydrates, lipids, polyphenols, chlorophylls, fatty acid profile, acidity number and iodine number were determined. Furthermore, antimicrobial activity of hemp hydrolysates was tested and fat numbers of the sludge samples were determined. Hemp soaps from hemp sludge and coconut oil were prepared and analysed by sensory tests too. Hemp flour hydrolysate was used in shampoo, which was tested on humans. It was demonstrated that all the materials used were safe and suitable for use. The prepared soaps showed a hydration effect when washing hands. Hemp shampoo application led to smooth and soft hair when washed.
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Use of technical hemp in acne preparations
Žáčková, Kristýna ; Kovalčík, Adriána (referee) ; Němcová, Andrea (advisor)
Hemp belongs among important plants with a long industrial tradition. However, its first use was originally for healing. In medicine, it is mainly applied thanks to the content of many biologically active substances, such as cannabinoids. This thesis is concerned with the use of hemp in acne preparations. The theory focuses mainly on the characterization of hemp and its active substances. The other chapters deals with cosmetic preparations and acne itself, and Propionibacterium acnes as well, which is involved. Within the experimental part, the extracts of two hemp varieties (Finola and Bialobrzeskie) were characterized in terms of antioxidant and cannabinoid presence. The cosmetic preparations with hemp extract content were prepared including a complete cleansing set for acne skin, concurrently commercial products of this sort were purchased. In cosmetic preparations and the extracts their inhibitory effect against Propionibacterium acnes was studied as well. Also Micrococcus luteus, Escherichia coli and Candida glabrata were tested. The results show that dried hemp flower extracts contain the greatest amount of active substances, so they have a higher antioxidant and antimicrobial effect. The presence of individual cannabinoids differed mainly depending on the variety. All hemp extracts had effect against gram-positive bacteria, in cosmetic preparations it was lower. Nevertheless hemp antibacterial effect has been proven.
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Development of environmental friendly materials
Peterková, Jitka ; ,, Milan Machatka, (referee) ; Plachý, Jan (referee) ; Šťastník, Stanislav (referee) ; Zach, Jiří (advisor)
Increasing demand for new progressive construction materials requires development of modern environmentally friendly materials with excellent end-use properties and reasonable price. One of the main objectives of material research in building industry is using renewable resources of raw materials of industrial waste for development of new construction materials. Current trend of thermal insulation of building constructions results in development of environmentally friendly insulation materials based on renewable material resources from agriculture and stock farming, which could became alternative for current common use insulation materials in the future. The thesis describes research and development of insulation materials based on natural fibres of agricultural origin; in particular fibres of hemp, flax and jute. Hydrothermal behavior of developed materials is studied including computational simulation of behavior of researched materials after building in the construction.
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Use of hemp and its products in cosmetics and pharmacy
Žáčková, Kristýna ; Skoumalová, Petra (referee) ; Němcová, Andrea (advisor)
Hemp is a versatile usable plant which can be found in almost all branches of industry, but also in medicine. The subject of this thesis is the determination of selected active compounds of technical hemp and its products and their possible applications in cosmetics and pharmacy. In the theoretical part is worked out the summary of active compounds including their effects in cosmetics and within medical use. In the experimental part were determined certain metabolites of hemp products, while as samples were used hemp flower, leaf, seed, flour, protein and two different hemp oils. There were also prepared creams with the addition of hemp oil in which the effects on the skin were assessed. In the analyzed samples was according to the character of the material determined the content of antioxidants, saccharides, proteins, lipids including the profile of fatty acids, vitamins and chlorophylls. It was proved that hemp flower is a better antioxidant than the leaf and contains higher amounts of all of the determined active compounds with this effect. Flour and protein which are made from the seeds have different percentages of individual studied compounds, because there is a different process for their production. The highest amount of saccharides is in the flour, hemp protein preparative consists of a 50 % of protein and in the seed was the highest lipid content. In the prepared hemp creams the moisturizing effects and the ability to prevent transepidermal water loss were observed.
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Development of thermal insulation materials based on natural fibers
Slípková, Andrea ; Kout, Pavel (referee) ; Zach, Jiří (advisor)
The thesis discusses possibilities of use new thermal insulation materials based on natural renewable resources (primary technical hemp) in development of the new thermal insulation materials. The main task (in the work) is to find modifications of the thermal insulation mats based on natural fibres by chemicals substances to improve the moisture properties, thermal properties and fire resistance.
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Study of behavior of thermal insulation materials on natural base
Kostlánová, Jana ; Balíková, Jitka (referee) ; Zach, Jiří (advisor)
The aim of the thesis is focused on a research of behavior of thermal and acoustic insulating materials on natural base with major importance on fibrous insulating materials. Vital part of the thesis is aimed on monitoring of environmental aspects interrelated with retrieving of raw materials and insulating materials manufacturing. Other types of fibrous insulating materials employed in a civil engineering are presented in the text. The main objective of the thesis is an evaluation of an influence of input fibers quality to the final attributes of insulating materials. The fundamental element of material quality evaluation represents physical and mechanical attributes of examined subjects.
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Active components of technical cannabis and their application in cosmetics
Kubáčková, Eliška ; Bokrová, Jitka (referee) ; Němcová, Andrea (advisor)
Hemp is unique plant with many therapeutic effects thanks to its large content of substances. This bachelor thesis brings information about characterization of main biological active substances in cannabis sativa, which are described in theoretical part of this thesis and determined in experimental part of this thesis. As a main active substance were determined antioxidants and cannabinoids for which the liquid chromatography method was optimized. This bachelor thesis also describes the antimicrobial effect of active cannabis substances for which it is used in the cosmetic industry. This antimicrobial activity has been studied in terms of the effect against dandruff, which is primarily caused by the high incidence of Malassezia yeasts on the skin of human hair. For the experimental part, the extracts of the technical hemp and more specific varieties of Bialobrzeskie and Finola were tested, which were further used for the preparation of the anti-dandruff shampoo. By analyzing the active substances in hemp extracts, the uniform result was obtained - the highest content of antioxidants and cannabinoids was reached by preparing of extract from dried hemp flowers. In the last part of the thesis, the antimicrobial effect of hemp extracts and prepared hemp shampoos was determined on selected strains of microorganisms and it was observed antimicrobial activity in extracts and shampoos againts Malassezia furfur yeast.
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Hemp as an alternative fuel
Jaworská, Petra ; Zejda, Vojtěch (referee) ; Hudák, Igor (advisor)
Bachelor thesis as literary research deals with possibilities of using hemp as an energy crop and its development and sustainability in the future. Production of hemp bio-fuels in Czech Republic is in the beginning but increasing interest in alternative energy sources presumes development in this branch. Producing bio-fuels made of hemp biomass brings many positive benefits in liquid, gas or solid states. Liquid biodiesel made of hemp presents alternative source of energy that can be used in common diesel engines. Hemp hurds briquettes are the most used hemp fuel in our country. Hemp briquettes has perfect properties in comparison to other sources. High heat of combustion, low purchase price and environmental friendliness gives motivation to create new growing branches. Second most common use is biogas fuel. Biogas is produced in usual biofermenter using hemp biomass often with admixture of slurry. Hemp biogas properties are also very satisfactory. In Czech Republic is huge potential in development and production of hemp biogas due to large number of biogas plants. Despite financially demanding processing of the hemp biomass the amount of biomass grow during one year makes this plant one of the most profitable alternative source for production of bio-fuels.
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Biological effects of various hemp fractions
Vacková, Hana ; Skoumalová, Petra (referee) ; Němcová, Andrea (advisor)
Cannabis is the only plant which contains cannabinoids and thanks to these compounds it has enormous potential. This thesis deals with the analysis of technical hemp. Effects of cannabinoids and methods used for cannabis analysis are discussed in the theoretical part. The experimental part includes spectrophotometric characterization of cannabis, it´s antimicrobial effects and thin layer chromatography analysis. Three sorts of Cannabis sativa L. were analyzed, namely Finola, Fedora and Kompolti. Firstly, the content of polyphenols, flavonoids and antioxidant activity in prepared tinctures were determined. Moreover, antimicrobial test were performed using disk test and turbidity determination. Gram-positive and Gram-negative bacteria and yeast organism were tested. It was found that cannabis tinctures possess good antimicrobial effects. Some of them are comparable with synthetic antibiotics. Finally, thin layer chromatography enabled visualization of cannabinoids in prepared tinctures.
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Preparation of anti-dandruff cosmetic products using technical hemp
Posoldová, Kateřina ; Fialová, Lenka (referee) ; Němcová, Andrea (advisor)
The main theme of this bachelor’s thesis is technical hemp and its effects on dandruff. Hemp has been a plant known for years not only because of the hallucinogenic substances which it contains, but also those for that are beneficial to our bodies. The theoretical part characterises hemp and the active substances from it. Then the thesis discusses about skin and a condition called dandruff. The next part describes yeast, which is very often occurs in hair skin disease. The practical part involves preparing ethanol extracts from two varieties of hemp, determining the active substances in the prepared extract and cosmetic products with added hemp extract. Extracts and products were tested using the antimicrobial method. The inhibitory effect was studied on representatives of bacteria and yeast.
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