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Volatile profile of unusual type of fruit (Asimina triloba)
Pallová, Jana ; Šimíčková, Adéla (referee) ; Vítová, Eva (advisor)
The purpose of this bachelor thesis is to determine aroma active substances in an unusual fruit - pawpaw (Asimina triloba). The theoretical part consists of a general description of the plant and characterization of its characteristics, composition and use. Furthermore, the issue of aroma active substances are processed as well as the method of their determination by solid-phase microextraction in connection with gas chromatography and mass spectrometry. The experimental part deals with the identification and quantification of aroma active substances using the selected method HS-SPME-GC-MS in three varieties - PA-Golden, Rebecca's Gold and NC-1. Differences in the number and content of volatile substances were found among the varieties. The lowest values were PA-Golden. In total, 105 compounds have been identified, including 7 aldehydes, 15 alcohols, 58 esters, 6 ketones, 4 lactones, 1 nitrogen compound, 1 alkane, 4 acids, 2 phenols, 1 alkenes, 4 terpenoids, and 2 other compounds.
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Characteristics of the different varieties of the Asimina triloba fruit
Maradová, Terezie ; Křikala, Jakub (referee) ; Diviš, Pavel (advisor)
This thesis describes pawpaw, fruit from east states of USA. Main part of this work is focused on nutritional characteristic of three species and their comparation. The analyzed species are PA Golden, NC-1 and Rebecca’s gold. Characteristic contains determination of lipids isolated by Soxhlet extraction, determination of proteins by Kjeldahl method, elemental analysis using ICP-OES, determination of saccharides and vitamin C by HPLC, determination of organic acids using IC and spectrofotometric analysis of phenolic compounds. This study shows, that pawpaw is interesting fruit, rich in nutritionally important compounds. That‘s why the cultivation and research of this fruit in South Moravia should continue in the future.
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Characteristics of the different varieties of the Asimina triloba fruit
Maradová, Terezie ; Křikala, Jakub (referee) ; Diviš, Pavel (advisor)
This thesis describes pawpaw, fruit from east states of USA. Main part of this work is focused on nutritional characteristic of three species and their comparation. The analyzed species are PA Golden, NC-1 and Rebecca’s gold. Characteristic contains determination of lipids isolated by Soxhlet extraction, determination of proteins by Kjeldahl method, elemental analysis using ICP-OES, determination of saccharides and vitamin C by HPLC, determination of organic acids using IC and spectrofotometric analysis of phenolic compounds. This study shows, that pawpaw is interesting fruit, rich in nutritionally important compounds. That‘s why the cultivation and research of this fruit in South Moravia should continue in the future.
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Volatile profile of unusual type of fruit (Asimina triloba)
Pallová, Jana ; Šimíčková, Adéla (referee) ; Vítová, Eva (advisor)
The purpose of this bachelor thesis is to determine aroma active substances in an unusual fruit - pawpaw (Asimina triloba). The theoretical part consists of a general description of the plant and characterization of its characteristics, composition and use. Furthermore, the issue of aroma active substances are processed as well as the method of their determination by solid-phase microextraction in connection with gas chromatography and mass spectrometry. The experimental part deals with the identification and quantification of aroma active substances using the selected method HS-SPME-GC-MS in three varieties - PA-Golden, Rebecca's Gold and NC-1. Differences in the number and content of volatile substances were found among the varieties. The lowest values were PA-Golden. In total, 105 compounds have been identified, including 7 aldehydes, 15 alcohols, 58 esters, 6 ketones, 4 lactones, 1 nitrogen compound, 1 alkane, 4 acids, 2 phenols, 1 alkenes, 4 terpenoids, and 2 other compounds.
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