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Ekonomické aspekty nahrazení palmového oleje v potravinách vyráběných v České republice
Ryglová, Michaela
Publicizing of the negative effects of palm oil on the environment has caused a gradual reduction of palm oil in the food industry. The aim of this study is to investigate the economic impact of this exclusion on selected Czech companies. In addition to a detailed description of the environmental issues, this work includes an overview of main producers of palm oil, and information about its certification and available certification systems. The role of palm oil in the food industry and its potential substitutes are also examined. The greatest benefit of this work is a qualitative research on the impact of production changes on costs and revenues. The economic situation of companies before and after palm oil removal is monitored with the use of financial statements and financial analysis of price/earnings ratio. The economic impacts of the removal of palm oil from food to consumers are demonstrated in the prices of selected products.
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Plynová chromatografie mastných kyselin ve vybraných živočišných tkáních
Drábková, Michaela
The aim of this diploma thesis was to determine, using gas chromatography, fatty acids in selected animal tissues. Specifically, the muscle, liver, pulmonary and adipose tissues were observed. A total of 32 piglets were divided into two groups with 16 pigs in each group. During 75 days of fattening, each group was given a feed mixture differing in the type of oil added. The experimental group was fed a basic feed mixture with the addition of 2,5 % fish oil, whilst the control group with the addition of 2,5 % palm oil. The animals were fed ad libitum. After slaughter, samples of selected tissues were taken and the process of lyophilisation was carried out. Using extraction method according to Hara, Radin (1978), lipids from lyophilized tissue samples were extracted. Fatty acids present within these lipids were then transformed into more volatile fatty acid methyl esters by the process of derivatization. These were then determined by gas chromatography and the results were statistically evaluated. The effect of fish oil in the feed mixture resulted in the increase of PUFA n-3 (P < 0.01) in all of the tested tissues. The addition of palm oil, on the other hand, had an effect on the content (P < 0.05) of SFA, MUFA in the tested tissues.
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Analýza významu a uplatnění kulturních rostlin v programu "fair trade"
Lišková, Martina
This thesis analyse the issue of fair trade and the posibility for this program in the Czech republic. The literary part of thesis describes the program fair trade, reasons for formation of fair trade, its current status and issue of oil palm planting in the world. This thesis evaluates influence of oil palm planting on the environment and economic, social and health impacts connected with oil palm planting for local residents and communities and impacts of oil palm production on the Czech Republic. For the practical part of thesis I used the questionnaire survey, when I examined public knowledge of the fair trade, consumer behavior, the range of demand for fair trade products and the interest of citizens about problematic situatin of oil palm planting.
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Palmový tuk ve výživě člověka
Kňákalová, Klára
Lipids are one of the most important molecules consumed by humans and they facilitate many physiological functions. The key part of lipids, as far as nutrition is concerned, are the content and structure of fatty acids. Some of them are essential for humans - i.e. the human organism is not able to produce them on their own and as such must be part of the individual's diet. The use of palm oil is on the rise, mainly because of its physical and chemical properties. That is why this bachelor thesis is focused on the palm oil from the perspective of nutrition. The first part of the thesis describes the elaeis guineensis, its cultivation and the chemical composition of the oil itself. The text continues on to explain the function of fats and fatty acids in nutrition as well as the use of palm oil in the food industry and its effects on human organism. The final part of the thesis looks at the palm oil production also from the environmental point of view.
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Analýza využití palmového oleje v České republice
Kaiserlichová, Lenka
This thesis analyzes the trends and the current situation in consumption of palm oil in the Czech Republic. Literary research focuses on theoretical analysis of the topic and the production of palm oil used in our country. The main attention is devoted to the cha-racteristics of palm oil, its production and consumption of health aspects of palm oil. The practical part is focused on the attitude of producers and consumers in the form of a selected survey, analyze the current situation regarding the use of palm oil to the czech market and the current situation and the success of campaigns against palm oil. The discussion will take into account the ethical aspects of the issue.
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Vplyv prídavku vybraných olejov na zastúpenie mastných kyselín v živočíšnych tkanivách a homeostázu cholesterolu u modelového organizmu
Hnatová, Martina
The theoretical part of my thesis is based on the general classification and characterization of dietary lipids, especially fatty acids, cholesterol and lipoprotein particles. Also, their transport and absorption mechanisms are described, as well as medical complications that are closely linked to excessive lipid consumption. One part is used for the description of lipid extractions and determination of fatty acids. The experimental part is focused on the analysis of fatty acids in samples of liver, adipose and muscle tissues of laboratory rats after the addition of palm oil, safflower oil, fish oil and Schizochytrium microalgae oil into their diets. Lyophilized tissue samples were extracted and derivatized, followed by gas chromatography fatty acid determination. The results were then statistically evaluated.
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Rozsah ukládání mastných kyselin z diet obohacených různými typy olejů ve svalovině pokusných živočichů
Toporská, Martina
The diploma thesis is divided into two parts – theoretical and practical. In the theoretical part I deal with fatty acids. Specifically, the diploma thesis describes the physiology of fatty acids and their analytical determination by gas chromatography. Furthermore, I focus on the chemical structure of fatty acids, their division, metabolism and influence on human nutrition. The practical part deals with the feeding experiment in Wistar Albino rats and the subsequent tissue collection of these animals for analytical determination of fatty acids in their muscle. The extent of deposition of selected fatty acids in rat muscle was studied. The feed was supplemented with the following oils: palm, safflower, fish and Schizochytrium algae extract.
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Studium složení palmového oleje z hlediska autenticity
Heinz, Petr
The palm oil is the most desirable raw material in a wide range of industry in the 21st century. It is a basic material for food, cosmetics, biodiesel and many other products. However, it’s production has a negative impact on the environment. In this thesis the palm oil authenticity is judged according to the differences in composition depending on the conditions of cultivation, which is related to the certification of this raw material. The fatty acid spectrum in the samples of palm oil was determined by method of gas chromatography coupled with flame ionization detection. In terms of total fatty acids content, the non-certified palm oil (fat sample 1) containing 0.969 g.g-1 fat (after three months storage 0.880 g.g-1 fat) is better than certified palm oil (fat sample 2) containing 0.648 g.g-1 fat (after three months storage 0.533 g.g-1 fat).
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The role of palm oil production in the economic development of Nigeria
Omoruan, Emmanuel Ekpen
The research study examines the role of palm oil productions in the economic growth and development of Nigeria as a whole. The study uses an annual time series data from 1980 to 2015 and Ordinary Least Squared Method (OLS) to estimate the multivariate regression model. The dependent variable for the study is the economic growth measured in terms of Gross Domestic Product (GDP); while the independent variable is palm oil productions (POP) measured in terms of thousand metric tons and the control variable is crude oil production (COP) measured in terms of barrels per year. The secondary data for the study is obtained from the World Bank, Index Mundi and Food and FAO. The findings in the research studies show that palm oil productions (POP) play a positive and significant role in the economic growth of Nigeria. In addition, the study confirms that crude oil production (COP) also has a positive and significant effect on the Nigeria economy.
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Obchodovanie s palmovým olejom v potravinárstve ČR
Kropiľáková, Katarína
The bachelor thesis is focused on the level of palm trading in the food industry of the Czech republic. At the same time, it deals with palm oil utilization in the manufacturing process of companies that use palm oil as one of their main inputs for their products. Another intention was find out which companies in Czech republic did not use palm oil in their production and how they replace it. A proportion of bachelor thesis is also focused on the question of substitution. The aim was to find out why palm oil is irreplaceable for the majority of food companies and vice versa, for what reasons are some companies strictly for non-use it.
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