National Repository of Grey Literature 18 records found  1 - 10next  jump to record: Search took 0.00 seconds. 
Preparation of edible antimicrobial packaging
Kozubová, Petra ; Dzurická, Lucia (referee) ; Skoumalová, Petra (advisor)
This bachelor’s thesis is focused on preparation and characterization of eatable packaging. Eatable packaging consists of two components, antimicrobial component and base of packaging. The task of eatable packaging is to protect product against antimicrobial attack and to extend durability of the product. As antimicrobial components were used water and oil extracts of several herbs (mint, nettle, lavender, cinnamon, cloves, vanilla, ginger and rhinoceros). Oil extracts were also encapsulated into liposomes for better application. Firstly, concentrations of polyphenoles and antioxidants of extracts were determined. Oil extract of clove contained the highest concentration of both determined substances. Encapsulation efficiency, stability and size of liposomes were tested too. All prepared liposomes were stable and relatively of the same size. Also high encapsulation efficiency was observed. Next, antimicrobial activity of prepared extracts and liposome particles against yeast Candida glabrata and two bacteria strains Escherichia coli and Staphycococcus epidermidis was tested and the high antimicrobial activity reported mainly all tested liposomes. Then alginate, chitosan and carboxymethylcellulose and their combinations respectively were used as bases of packaging. Created film had to meet several parameters, especially suitable sensory properties such as pleasant taste and smell, as well as invisibility, gloss, affordability and suitable manipulability. Combination of 2% carboxymethylcellulose and 1% alginate in a ration of 2:1 with liposomes of mint as antimicrobial component achieved the best results.
Analysis of sensorially active substances contained herbal extracts
Koloničná, Markéta ; Vítová, Eva (referee) ; Mikulíková, Renata (advisor)
The peppermint (Mentha piperita), the salvia (Salvia officinalis), the lemon balm (Melissa oficinalis), the camomile (Matricaria chamomilla) and the valerian (Valeriana officinalis) are herbs with healing effects. Their ethanol extracts are used for food fortification or in a cosmetic industry. Substances contained in herbal extracts were analyzed in this thesis. The extracts were prepared by maceration. Next, they were analyzed by using a gas chromatography and a mass spectrometry. The aim of this thesis was an optimalization of the method used for the analysis of sensorially active substances. Then, herbal extracts were analyzed and concentration of sensorially active substances was determined.
Determination of substances content in mint
Novotná, Martina ; Zlámalová Gargošová, Helena (referee) ; Vávrová, Milada (advisor)
This Bachelor thesis deals with determination of the content substances in mint (Mentha). Mint is in pharmacy very popular herb, it is been used for over 2000 years. We know many species of mint. Peppermint (Mentha piperita) is the most favorite and most common species. In the theoretical part there is description of substances found in plants, the characteristic of mint and principles of used analytical methods. Practical part of this thesis describes substances found in examined teas.
Compounds of terpenic nature in mint plants and the influence of elicitation on them
Jančová, Nikola ; Čáslavský, Josef (referee) ; Vávrová, Milada (advisor)
Diploma thesis is focused on study of compounds of terpenic nature in mint plants. Terpenic compounds are volatile hydrocarbons formed by several isoprenoid units with low molecular weight which cause the typical smell of plants. Presence of these compounds cause that plants seem to be fungicidal, bactericidal and insecticidal. Due to these properties, they can be used as botanical pesticides which are not toxic and no resistant organisms occur. Each plant contains relatively low concentrations of these compounds and therefore elicitors must be used for the increasing of terpenes amount. Elicitors activate defensive mechanisms in the plant leading to higher defense abilities and production of secondary metabolites. The identification and quantification of analytes was determined by gas chromatography in connection with mass spectrometry.
Analysis of essences in some plant materials
Koloničná, Markéta ; Svoboda, Zdeněk (referee) ; Mikulíková, Renata (advisor)
The peppermint (Mentha piperita) and the levander (Lavandula angustifolia) are the aromatic herbs with the healing and spices effects. Their essencial oils serve to production of the aromatic substances, they are used in the cosmetic and the food industry. In this thesis were analyzed substances which are contained in levander and peppermint oils. These oils were extracted through the destillation with the water steam, next they were analyzed by the gas chromatograph and the mass spectrometer. The aim of the thesis was found which substances contain these oils. In the levander oils were proofed the highest amounts of the cineole, linalool and the linalyl-acetate. In the peppermint oils were proofed the highest amounts of the menthon and the menthol.
Obsahové látky Máty peprné
Zsoldosová, Jana
This bachelor diploma is focused on Mentha piperita L., which is gaining again in popularity lately. Mint is one of the most popular and the most commonly grown medicinal plants. Mint is used by more than 2000 years and is part of almost every medicine. Mint is used in the pharmaceutical industry, food processing industry and traditional cultures. Identification of individual species is however very difficult because of their great diversity, high polymorphism a light hybridization. In this paper are described substances contained peppermint and their quantiative determination by the Czech Pharmacopoeia 2009 and its supplements. Part of this thesis contained the experiment results of the cultivation of peppermint, wherein the height of the plants has been evaluated, and it was subsequently determined quantity of essentials oils by steam distillation, the dry-out ratio and yield of raw weight of drug per hectare. Furthermore, the hypotheis has been formed regarding the influence of the quantity of nettle (Urtica dioica) constituents.
Preparation of edible antimicrobial packaging
Kozubová, Petra ; Dzurická, Lucia (referee) ; Skoumalová, Petra (advisor)
This bachelor’s thesis is focused on preparation and characterization of eatable packaging. Eatable packaging consists of two components, antimicrobial component and base of packaging. The task of eatable packaging is to protect product against antimicrobial attack and to extend durability of the product. As antimicrobial components were used water and oil extracts of several herbs (mint, nettle, lavender, cinnamon, cloves, vanilla, ginger and rhinoceros). Oil extracts were also encapsulated into liposomes for better application. Firstly, concentrations of polyphenoles and antioxidants of extracts were determined. Oil extract of clove contained the highest concentration of both determined substances. Encapsulation efficiency, stability and size of liposomes were tested too. All prepared liposomes were stable and relatively of the same size. Also high encapsulation efficiency was observed. Next, antimicrobial activity of prepared extracts and liposome particles against yeast Candida glabrata and two bacteria strains Escherichia coli and Staphycococcus epidermidis was tested and the high antimicrobial activity reported mainly all tested liposomes. Then alginate, chitosan and carboxymethylcellulose and their combinations respectively were used as bases of packaging. Created film had to meet several parameters, especially suitable sensory properties such as pleasant taste and smell, as well as invisibility, gloss, affordability and suitable manipulability. Combination of 2% carboxymethylcellulose and 1% alginate in a ration of 2:1 with liposomes of mint as antimicrobial component achieved the best results.
Návrh mechanizačního zajištění pro pěstování a sklizeň vybraného druhu léčivých a kořeninových rostlin (LAKR)
Opluštilová, Dagmar
In the thesis was elaborated an overview of the main operations related to the cultivation of the MASP. A model agrotechnical procedure was developed for the cultivation of two selected species MASP - peppermint (Mentha x piperita) and marigold (Calendula officinalis). In addition, machine operating costs, material costs and manual operations were determined. From these data, the total cost of the crop was calculated in CZK.ha-1 and CZK.t-1. Comparison with similar calculations has shown that the results are real and can be used in practice.
Possibilities of use of botanical pesticides and plant extracts in the protection of fennel, peppermint and thyme: certified methodology
Pavela, Roman ; Žabka, Martin ; Kaffková, Katarína ; Smékalová, Kateřina
This publication is intended for growers of medicinal and aromatic plants (fennel, mint and thyme) and it is focused on their pests and diseases. It includes overview of suitable means and steps for elimination of the damage caused by these harmful agents by using biological way. The publication presents examples of both types of so-called botanical pesticides - commercially available products which contain extracts of biologically active substances from plants, as well as so-called farm products, for which it describes procedures for its preparation and using.
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