|
|
Aroma active compounds of selected types of herbs
Škutová, Pavla ; Hrstka, Miroslav (referee) ; Vítová, Eva (advisor)
This diploma thesis deals with the identification of aroma active compounds in medicinal herbs. The group consists of 5 types of herbs: lemon balm (Melissa officinalis), pot marigold (Calendula officinalis), clary sage (Salvia sclarea), milk thistle (Silybum marianum), goat’s rue (Galega officinalis). These plants are known for their positive effects in folk medicine. The SPME-GC-MS method was chosen to characterize the fragrances. During the identification of volatile compounds, emphasis was put on suspected fragrance allergens listed in EC Regulation 1223/2009 in Annex III. Overall 106 compounds were identified together with 8 allergens in lemon balm, pot marigold contained 104 compounds with 7 allergens included, 82 compounds including 5 allergens in clary sage, 73 compounds were identified in milk thistle including 6 allergens and 110 compounds with 9 allergens included in goat’s rue.
|
|
|
Aroma active compounds of selected types of herbs
Škutová, Pavla ; Hrstka, Miroslav (referee) ; Vítová, Eva (advisor)
This diploma thesis deals with the identification of aroma active compounds in medicinal herbs. The group consists of 5 types of herbs: lemon balm (Melissa officinalis), pot marigold (Calendula officinalis), clary sage (Salvia sclarea), milk thistle (Silybum marianum), goat’s rue (Galega officinalis). These plants are known for their positive effects in folk medicine. The SPME-GC-MS method was chosen to characterize the fragrances. During the identification of volatile compounds, emphasis was put on suspected fragrance allergens listed in EC Regulation 1223/2009 in Annex III. Overall 106 compounds were identified together with 8 allergens in lemon balm, pot marigold contained 104 compounds with 7 allergens included, 82 compounds including 5 allergens in clary sage, 73 compounds were identified in milk thistle including 6 allergens and 110 compounds with 9 allergens included in goat’s rue.
|
|
|
Senzorické hodnocení bylinných čajů z konvenční a ekologické produkce
Haluzová, Klára
In the theoretical part of the bachelor thesis focused on the topic Sensory evaluation of herbal teas from the conventional and ecological production, the basic theoretical knowledge concerning the issue of herbal teas and sensory analysis are summed up. The practical part deals with the assessment of the influence of conventional and ecological way of production on sensory characteristics of herbal teas. Ten samples of teas of one sort were prepared for the sensory evaluation, five sorts from the conventional producer and five of the same teas from the ecological producer. Tested herbal teas were chamomile, marigold, nettle, peppermint and sage. The evaluation was performed in the sensory laboratory of the Department of Food Technology of the Mendel University in Brno in March 2016 by ten trained evaluators. Following descriptors were evaluated with each sample: overall visual aspect of dry tea before preparation, intensity of aroma, acceptability of aroma, presence of strange aroma, colour hue and its intensity, clearness, intensity of flavour, acceptibility of flavour, presence of strange flavours and overall impression after preparation. For the teas evaluation was used the method of description, category scales and graphical unstructured scales. On the grounds of the sensory analysis it was found that selected sorts of teas in dry state were evaluated better at the ecological production. However, we cannot definitely say which teas had better sensory characteristics. It can be stated that when herbal teas are concerned, the sensory characteristics were not notably influenced by the way of production.
|
|
|
Phenolic complex of medicinal plants
Vaníčková, Klára ; Orsák, Matyáš (advisor) ; Hniličková, Helena (referee)
This thesis deals with medicinal plants, that contain phenolic complex. Emphasis on interdisciplinary relations with the chemistry and the use of theory in practical life. At the beginning, I also focused on the concept of health and lifestyle, which is an inherent part of that topic. Content is also the use of medicinal plants, basic plant description and important characteristic of the phenolics contained in plants. At the theoretical part is processed an overview of selected kinds of medicinal plants to draw attention to the content of the substance, especially with the phenolic complex special effects and their possible use.
|
guest ::
