magistrsko delo
Povzetek
Namen magistrske naloge je bil določiti vsebnosti skupnega cianida in podati minimalno količino živila, ki predstavlja tveganje za zastrupitev s cianidom. Za določanje koncentracije skupnega cianida smo kot referenčno metodo uporabili destilacijo, ki smo jo nato primerjali s kislinsko hidrolizo. Rezultate smo primerjali z linearno regresijo in napako ocenili kot koren povprečnega kvadratnega odklona (RMSE). Ne glede na uporabljeno metodo smo določili najnižjo vsebnost cianida v fižolu 0,05 mg/kg, najvišjo pa v olupku pasijonke 885 mg/kg. Izmed analiziranih koščic je z najvišjo vrednostjo izstopala divja češnja GB (201 mg/kg), najnižjo smo izmerili v avokadu (2,49 mg/kg). Ugotovili smo, da je pri določanju koncentracije HCN lahko veliko vzrokov variabilnosti, od načina priprave vzorca do uporabljenega postopka, predvsem učinkovitost razgradnje cianogenih glikozidov. Rezultati, dobljeni po metodi destilacije, so odstopali od rezultatov, dobljenih po metodi kislinske hidrolize. V vzorcih so bile prisotne moteče spojine, ki so vplivale na končni rezultat.
Ključne besede
cyanogenic glycosides;cyanide;toxins;analytical methods;
Podatki
Jezik: |
Angleški jezik |
Leto izida: |
2021 |
Tipologija: |
2.09 - Magistrsko delo |
Organizacija: |
UM FKBV - Fakulteta za kmetijstvo in biosistemske vede |
Založnik: |
[M. Špes] |
UDK: |
543:543.632.656(043)=163.6 |
COBISS: |
74561027
|
Št. ogledov: |
393 |
Št. prenosov: |
69 |
Ocena: |
0 (0 glasov) |
Metapodatki: |
|
Ostali podatki
Sekundarni jezik: |
Slovenski jezik |
Sekundarni naslov: |
Comparison of analytical cyanide determination methods in plant samples |
Sekundarni povzetek: |
The aim of the master's thesis was to determine the total content of cyanide and to indicate the minimum amount of food that presents a risk of cyanide poisoning. Distillation was used as a reference method to determine the total cyanide concentration, which was then compared with acid hydrolysis. The results obtained were compared using linear regression and the error was estimated as a root mean square deviation (RMSE). The lowest cyanide content was found in beans (0.05 mg/kg) and the highest in passion fruit peels (885 mg/kg). Of the pits studied, wild cherry GB stood out with the highest value (201 mg/kg), and the lowest was measured in avocado (2.49 mg/kg). We have found that there may be many causes of variability in the determination of HCN concentration, ranging from the method of sample preparation to the analytical procedure used, especially the efficiency of degradation of cyanogenic glycosides. The results of the distillation method differed from the results of the acid hydrolysis method. We also found that there were interferences in the samples that affected the result. |
Sekundarne ključne besede: |
cianogeni glikozidi;cianidi;toksini;analizne metode; |
Vrsta dela (COBISS): |
Magistrsko delo/naloga |
Komentar na gradivo: |
Univ. v Mariboru, Fak. za kmetijstvo in biosistemske vede |
Strani: |
IX, 43, [1] f. |
ID: |
13252807 |