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Positive effects of conjugated linoleic acid on human health
Baštová, Daniela ; Vespalcová, Milena (referee) ; Vítová, Eva (advisor)
This bachelor thesis deals with the characteristics of the fatty acids, their structure, nomenclature, properties, reactions and analysis. It is also dedicated to the history, sources, effects on human health and the correct ratio of omega-fatty acids in the body. The main issue of this work is conjugated linoleic acid, which is known to its countless positive effects, which can include weight loss and lower level of cholesterol, anticarcinogenic effects, prevention of osteoporosis and arteriosclerosis, etc. The work is focused on its characteristics, structure, occurrence in food, chemical production and a wide range of preparations available on the market. Last but not least, deals with the possibilities of its determinations, including gas chromatography, high performance liquid chromatography, gas chromatography-mass spectrometry, NMR spectroscopy, and combined methods.
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Aroma profile of selected types of fruit juices
Baštová, Daniela ; Zemanová, Jana (referee) ; Vítová, Eva (advisor)
This diploma thesis is focused on determination the aroma profile of selected species of fruit juices (apple, grape, carrot, orange, blackcurrant and elderberry juice). The theoretical part deals with the composition and properties of selected species of fruits and their juices, then deals with juice‘s technological process and selected methods for the determination of aroma active compounds. The experimental part describes the instrumental and sensory analysis. The six pure fruit juices and five mixed fruit juices were used for instrumental evaluation. The aroma active compounds were extracted by SPME and subsequently identified and quantified by gas chromatography. The sensory evaluation was performed by ranking test and evaluation using hedonic scale.
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Aroma profile of selected types of fruit juices
Baštová, Daniela ; Zemanová, Jana (referee) ; Vítová, Eva (advisor)
This diploma thesis is focused on determination the aroma profile of selected species of fruit juices (apple, grape, carrot, orange, blackcurrant and elderberry juice). The theoretical part deals with the composition and properties of selected species of fruits and their juices, then deals with juice‘s technological process and selected methods for the determination of aroma active compounds. The experimental part describes the instrumental and sensory analysis. The six pure fruit juices and five mixed fruit juices were used for instrumental evaluation. The aroma active compounds were extracted by SPME and subsequently identified and quantified by gas chromatography. The sensory evaluation was performed by ranking test and evaluation using hedonic scale.
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Positive effects of conjugated linoleic acid on human health
Baštová, Daniela ; Vespalcová, Milena (referee) ; Vítová, Eva (advisor)
This bachelor thesis deals with the characteristics of the fatty acids, their structure, nomenclature, properties, reactions and analysis. It is also dedicated to the history, sources, effects on human health and the correct ratio of omega-fatty acids in the body. The main issue of this work is conjugated linoleic acid, which is known to its countless positive effects, which can include weight loss and lower level of cholesterol, anticarcinogenic effects, prevention of osteoporosis and arteriosclerosis, etc. The work is focused on its characteristics, structure, occurrence in food, chemical production and a wide range of preparations available on the market. Last but not least, deals with the possibilities of its determinations, including gas chromatography, high performance liquid chromatography, gas chromatography-mass spectrometry, NMR spectroscopy, and combined methods.
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