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Primerjava vsebnosti fenolnih spojin v različnih napitkih, pripravljenih iz rastline maté (Ilex paraguariensis A. St.-Hil.)
ID Dolinar, Lucija (Author), ID Mikulič Petkovšek, Maja (Mentor) More about this mentor... This link opens in a new window

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Abstract
Namen naloge je bil primerjati vsebnosti polifenolnih snovi v treh različnih mate čajih (v čajni vrečki in raztresena navaden ter pražen mate), pripravljenih na tri različne načine, ter primerjati vsebnosti polifenolnih snovi pri večkratnih prelitjih tradicionalno pripravljenega mate čaja. Poleg polifenolnih snovi smo analizirali tudi vsebnosti sladkorjev. Pri kontrolnem obravnavanju smo za ekstrakcijsko topilo uporabili metanol. Za tradicionalen način priprave smo uporabili samo raztresena čaja. Vsebnosti snovi so bile analizirane s pomočjo HPLC. Ugotovili smo, da se največje vsebnosti polifenolnih snovi in sladkorjev ekstrahirajo pri običajno pripravljeni čajni vrečki. Najmanjša vsebnost polifenolnih snovi se je ekstrahirala pri kontrolnih obravnavanjih, ne glede na vrsto mate čaja. Pri tradicionalnem načinu priprave smo izmerili najvišje vsebnosti fenolnih spojin v prvem prelitju, z vsakim naslednjim prelitjem se je njihova vsebnost v napitku zmanjšala. Med raztresenim navadnim in praženim mate čajem nismo ugotovili statistično značilnih razlik v vsebnosti polifenolnih snovi in sladkorjev. Izmed analiziranih sladkorjev smo v čaju izmerili največjo vsebnost saharoze in najmanjšo vsebnost fruktoze.

Language:Slovenian
Keywords:Mate, Ilex paraguariensis, hidroksicimetne kisline, flavonoli, sladkorji, način priprave
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:BF - Biotechnical Faculty
Place of publishing:Ljubljana
Publisher:[L. Dolinar]
Year:2022
PID:20.500.12556/RUL-135030 This link opens in a new window
UDC:633.77:641.87:547.56(043.2)
COBISS.SI-ID:97929219 This link opens in a new window
Publication date in RUL:18.02.2022
Views:866
Downloads:79
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Secondary language

Language:English
Title:Comparison of content of phenolic compounds in different beverages, made from plant mate (Ilex paraguariensis A.St.-Hil.)
Abstract:
The aim of this study was to compare the content of polyphenolics in 3 different mate teas (tea from a teabag and two types of scattered tea, ordinary and roasted), prepared in three different ways. Moreover, the aim was also to compare the content of polyphenolics in multiple overflows of a traditionally prepared mate. In addition to polyphenolics, the sugar content was also measured. For the control treatment, methanol was used as an extraction solvent. For the traditional preparation of the beverage, only scattered mate teas were used. The content of polyphenolics and sugars in teas was determined by HPLC analysis. The highest content of polyphenolics and sugars were extracted in tea prepared from a teabag. The lowest content of polyphenolics was extracted at control treatments, regardless of the type of mate teas. In the traditionally prepared beverages, the highest content of compounds was measured in the first overflow, and the content of compounds decreased with each subsequent overflow. No statistically significant differences were found between scattered ordinary and roasted mate teas regarding the content of polyphenolics and sugars. Among all analysed sugars in the tea, we measured the highest content of sucrose and the lowest content of fructose.

Keywords:Mate, Ilex paraguariensis, hydroxycinnamon acids, flavonols, sugars, preparation

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