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Termično inducirane reakcije izbranih mono- in disaharidov z asparaginom ter analiza nastalih produktov
ID Sel, Zala (Author), ID Prislan, Iztok (Mentor) More about this mentor... This link opens in a new window, ID Kocar, Drago (Comentor)

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Abstract
V magistrskem delu smo preučevali vpliv različnih sladkorjev in fizikalnih dejavnikov na Maillardovo reakcijo. Osredotočeni smo bili predvsem na interakcijo različnih sladkorjev (glukoza, fruktoza, saharoza, škrob, manoza in ksiloza) z asparaginom ter vpliv temperature, časa in vsebnosti vode na proces reakcije. Analize smo izvajali z dinamično diferenčno kalorimetrijo (DSC), termogravimetrično analizo (TGA) in tekočinsko kromatografijo visoke ločljivosti (HPLC). Naše ugotovitve so pokazale, da mešanice sladkorjev in asparagina reagirajo z različno hitrostjo. Najhitreje so reagirali monosaharidi, sledil je disaharid saharoza, medtem ko škrob z asparaginom ni reagiral, saj pri visoki temperaturi ne razpade na monomere kot saharoza. Ksiloza je pri vseh pogojih najhitreje reagirala z asparaginom. Preučevali smo tudi vpliv fizikalnih dejavnikov in ugotovili, da se intenzivnost reakcij vseh mešanic povečuje z višjo temperaturo ter s povečevanjem vsebnosti vode v mešanici. Metoda HPLC je omogočila analizo termično obremenjenih mešanic asparagina z glukozo in ksilozo. Rezultati so pokazali razlike v sestavi mešanic, natančne kvantitativne in kvalitativne analize produktov pa nam ni uspelo izvesti.

Language:Slovenian
Keywords:Maillardova reakcija, sladkorji, monosaharidi, disaharidi, asparagin, temperatura, čas, vsebnost vode, TGA, DSC, HPLC
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:BF - Biotechnical Faculty
Publisher:[Z. Sel]
Year:2024
PID:20.500.12556/RUL-162302 This link opens in a new window
UDC:664.16:577.114:547.466.63
COBISS.SI-ID:208427267 This link opens in a new window
Publication date in RUL:21.09.2024
Views:63
Downloads:644
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Secondary language

Language:English
Title:Thermally induced reactions between asparagine and selected mono/disaccharides and analysis of obtained products
Abstract:
In our master's thesis, we studied the influence of various sugars and physical factors on the Maillard reaction. We focused on the interaction between different sugars (glucose, fructose, sucrose, starch, mannose, and xylose) and asparagine, as well as the impact of temperature, time, and water content on the reaction process. We conducted analyses using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and high-preformance liquid chromatography (HPLC). Our findings showed that mixtures of sugars and asparagine react at different rates. Monosaccharides reacted the fastest, followed by the disaccharide sucrose, while starch did not react with asparagine because it does not break down into monomers at high temperatures like sucrose does. Xylose was the fastest to react with asparagine under all conditions. We also studied the influence of physical factors and found that the intense reaction of all mixtures is caused by a higher temperature and an increase in the water content in the mixture. The HPLC method enabled the analysis of heat-stressed mixtures of asparagine with glucose and xylose. The results showed differences in the composition of the mixtures, but we were unable to perform an imprecise quantitative and qualitative analysis of the products.

Keywords:Maillard reaction, sugar, monosaccharides, dissacharides, asparagine, temperature, time, water content, TGA, DSC, HPLC

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