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Optimizacija derivatizacije nekaterih aminov in identifikacija njihovih razgradnih produktov
ID Rijavec, Tjaša (Author), ID Kralj Cigić, Irena (Mentor) More about this mentor... This link opens in a new window

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Abstract
Poznavanje vsebnosti biogenih aminov je zanimivo na različnih področjih. Tako na področju človekovega zdravja novejše raziskave kažejo, da imajo nekateri poliamini antioksidativne lastnosti, blagodejno vplivajo na celične procese in zavirajo staranje. Nekatera živila že naravno vsebujejo določene biogene amine, katerih vsebnost se bistveno poveča, ko živilo ni več primerno za zaužitje. Tako je razvoj selektivne, zanesljive in dovolj robustne analizne metode z nizko mejo zaznave za določanje biogenih aminov bistvenega pomena. V magistrskem delu sem preverila vpliv različnih parametrov na potek derivatizacije z dansil kloridom. Derivatizacija omogoča ločbo biogenih aminov s tekočinsko reverznofazno kromatografijo in detekcijo z UV/Vis in fluorescentnim detektorjem. Optimizirala sem metodo, ki omogoča določanje biogenih aminov agmatina, triptamina, β-fenetilamina, putrescina, kadaverina, histamina, tiramina, spermidina in spermina v koncentracijskem območju 0,1 – 1,0 mg/L. Študirala sem tudi oksidativno razgradnjo spermina in spermidina s H2O2 in KMnO4. Na osnovi masnih spektrov sem dokazala, da pri razgradnji spermina nastaja putrescin, pri razgradnji spermidina pa putrescin in 1,3-diaminopropan.

Language:Slovenian
Keywords:biogeni amini, LC-MS, spermin, spermidin, oksidativna razgradnja
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Technology
Year:2019
PID:20.500.12556/RUL-109869 This link opens in a new window
COBISS.SI-ID:1538405059 This link opens in a new window
Publication date in RUL:09.09.2019
Views:2195
Downloads:366
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Secondary language

Language:English
Title:Optimization of the derivatization of certain amines and identification of their degradation products
Abstract:
Knowing the exact content of biogenic amines in samples is relevant in different fields. Recent studies in the field of human health have shown that certain polyamines have antioxidative properties, positively affect cellular functions and slow down aging. Some types of food already contain certain biogenic amines in low concentrations, which increase when the food is no longer suitable for consumption. Therefore, the development of a selective, reliable and robust analytical method with a low limit of detection for determination of biogenic amines is of great importance. In the master's thesis, the influence of different parameters on the derivatisation with dansyl chloride was investigated. The derivatization allows the biogenic amines to be separated with liquid reverse-phase chromatography and to be detected by UV/Vis and fluorescence detectors. A method for determining the biogenic amines agmatine, tryptamine, β-phenethylamine, putrescine, cadaverine, histamine, tyramine, spermidine and spermine in the concentration range 0,1 – 1,0 mg/L was optimised. In addition, oxidative degradation of spermine and spermidine was studied with H2O2 and KMnO4. On the basis of mass spectra, it was proven that spermine degrades to putrescine, while spermidine degrades to putrescine and 1,3-diaminopropane.

Keywords:biogenic amines, LC-MS, spermidine, spermine, oxidative degradation

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