Magdalena Zvonkova

Mrs. Magdalena Zvonkova

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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29 March 2024 in Applied Sciences
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Journal Article
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IBIva Burešová
Iva Burešová
RSRomana Sebestikova
Romana Sebestikova
JŠJaromír Šebela
Jaromír Šebela
AAAnna Adámková
Anna Adámková
MZMagdalena Zvonkova
Magdalena Zvonkova
JMJiri Mlcek
Jiri Mlcek
Inulin may be widely used in in the food industry due to its many health benefits. It has the potential to increase the insufficient nutritional quality of gluten-free bread. Therefore, the aim of this study was to test the applicability of inulin in rice baking. The impact of added inulin (5%, 10%, 20%, 30%, and 40%) on the dough’s rheological, bread’s textural and sensory characteristics was evaluated. The extensibility of rice dough during uniaxial deformation tests (8.5 mm) was improved by the added inulin (10.2–12.3 mm). The presence of inulin softened the dough and shifted the gelatinization temperature toward higher values. The added inulin also increased the loaf’s specific volume (1.16–1.48 mL/g), tenderized the breadcrumbs, increased the crumb porosity (36–58%), and generally improved the crumb structure. The panelists favored the sensory characteristics of breads with inulin. However, baking losses were increased in these breads as well (15.1–18.5%). The effect of the added inulin on the dough and bread characteristics generally rose with an increasing addition of inulin, reaching the maximum in samples with 30% inulin. The presence of 40% inulin deteriorated some characteristics of the bread. Therefore, the addition of up to 30% of inulin seemed to be optimal for rice bread.

1 January 2025 in Open Life Sciences
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TJTunde Jurikova
Tunde Jurikova
NSNela Skowronková
Nela Skowronková
MZMagdalena Zvonkova
Magdalena Zvonkova
JOJana Orsavová
Jana Orsavová
Sezai ErcisliSezai Ercisli
Sezai Ercisli
JMJiri Mlcek
Jiri Mlcek
Although cornelian cherry is an underutilized fruit species, its fruits have a high biological value due to valuable biologically active substances, especially polyphenols. The total content of polyphenols accounts for 37% of all the bioactive substances examined. Flavonols, anthocyanins, flavan-3-ols, and phenolic acids represent the main groups of phenolic compounds present and thanks to these compounds, cornelian cherry fruits possess mainly antioxidant, anti-inflammatory, antimicrobial, metabolic, antidiabetic, cardioprotective, and anticancer effects. This review summarizes new research aimed at popularizing this lesser-known species not only for direct consumption but also for further processing.

3 March 2022 in Sensors
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Journal Article
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MAMartin Adámek
Martin Adámek
JMJiří Matyáš
Jiří Matyáš
AAAnna Adámková
Anna Adámková
JMJiri Mlcek
Jiri Mlcek
MBMartin Búran
Martin Búran
RORobert Olejnik
Robert Olejnik
This study focuses on the use of thermodynamic sensors (TDS) in baking, brewing, and yogurt production at home. Using thermodynamic sensors, a change in the temperature flow between the two sensor elements during fermentation was observed for the final mixture (complete recipe for pizza dough production), showing the possibility of distinguishing some phases of the fermentation process. Even during the fermentation process in the preparation of wort and yogurt with non-traditional additives, the sensors were able to indicate significant parts of the process, including the end of the process. The research article also mentions as a new idea the use of trivial regulation at home in food production to determine the course of the fermentation process. The results presented in this article show the possibility of using TDS for more accurate characterization and adjustment of the production process of selected foods in the basic phase, which will be further applicable in the food industry, with the potential to reduce the cost of food production processes that involve a fermentation process.

3 January 2023 in Sensors
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Journal Article
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MAMartin Adámek
Martin Adámek
MZMagdalena Zvonkova
Magdalena Zvonkova
IBIva Burešová
Iva Burešová
MBMartin Búran
Martin Búran
VŠVeronika Ševčíková
Veronika Ševčíková
JMJiri Mlcek
Jiri Mlcek
Dough fermentation in gluten-free bakery products is problematic due to the absence of gluten, which provides advantageous rheological properties. A thermodynamic sensor (TDS) system combined with an electronic nose was tested as an alternative to conventional methods monitoring dough development based on mechanical properties. In the first part, the configuration of the sensors in the thermodynamic system and their response to different heat-source positions, which significantly affect the output signal from the measurement system, were investigated. The practical contribution lies in the application of the measurements to the example of gluten-free doughs with and without edible insect enrichment. An optimized configuration of the thermodynamic system (one sensor on the inner wall of the container at the bottom and another in the middle of the container closer to the top of the dough) in combination with an experimental electronic nose was used for the aforementioned measurement. In some cases, up to 87% correlation between the signal from the TDS and the signals from a professional rheofermentometer Rheo F-4 (Chopin) was demonstrated. The differences between the results can be explained by the use of different techniques. Using a combination of sensor systems in one place, one time and one sample can lead to more comprehensive and robust results. Furthermore, it was shown that the fermentation activity increased in corn dough with the addition of insects compared to dough without the addition. In rice flour dough with the addition of edible insects, fermentation activity was similar to that of the flour without the addition.

31 July 2023 in Sensors
Verified
Journal Article
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MAMartin Adámek
Martin Adámek
JMJiri Mlcek
Jiri Mlcek
NSNela Skowronková
Nela Skowronková
MZMagdalena Zvonkova
Magdalena Zvonkova
MJMiroslav Jasso
Miroslav Jasso
MBMartina Buckova
Martina Buckova
This paper discusses the possible use of 3D fused deposition modeling (FDM) to fabricate capillaries for low-cost chemiresistive gas sensors that are often used in various applications. The disadvantage of these sensors is low selectivity, but 3D printed FDM capillaries have the potential to increase their selectivity. Capillaries with 1, 2 and 3 tiers with a length of 1.5 m, 3.1 m and 4.7 m were designed and manufactured. Food and goods available in the general trade network were used as samples (alcohol, seafood, chicken thigh meat, acetone-free nail polish remover and gas from a gas lighter) were also tested. The “Vodka” sample was used as a standard for determining the effect of capillary parameters on the output signal of the MiCS6814 sensor. The results show the shift of individual parts of the signal in time depending on the parameters of the capillary and the carrier air flow. A three-tier capillary was chosen for the comparison of gas samples with each other. The graphs show the differences between individual samples, not only in the height of the output signal but also in its time characteristic. The tested 3D printed FDM capillaries thus made it possible to characterize the output response by also using an inexpensive chemiresistive gas sensor in the time domain.

7 January 2024 in Sensors
Verified
Journal Article
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VŠVeronika Ševčíková
Veronika Ševčíková
MAMartin Adámek
Martin Adámek
RSRomana Sebestikova
Romana Sebestikova
IBIva Burešová
Iva Burešová
MBMartin Búran
Martin Búran
JMJiri Mlcek
Jiri Mlcek
This study focuses on an applicability of the device designed for monitoring dough fermentation. The device combines a complex system of thermodynamic sensors (TDSs) with an electronic nose (E-nose). The device’s behavior was tested in experiments with dough samples. The configuration of the sensors in the thermodynamic system was explored and their response to various positions of the heat source was investigated. When the distance of the heat source and its intensity from two thermodynamic sensors changes, the output signal of the thermodynamic system changes as well. Thus, as the distance of the heat source decreases or the intensity increases, there is a higher change in the output signal of the system. The linear trend of this change reaches an R2 value of 0.936. Characteristics of the doughs prepared from traditional and non-traditional flours were successfully detected using the electronic nose. To validate findings, the results of the measurements were compared with signals from the rheofermentometer Rheo F4, and the correlation between the output signals was closely monitored. The data after statistical evaluation show that the measurements using thermodynamic sensors and electronic nose directly correlate the most with the measured values of the fermenting dough volume. Pearson’s correlation coefficient for TDSs and rheofermentometer reaches up to 0.932. The E-nose signals also correlate well with dough volume development, up to 0.973. The data and their analysis provided by this study declare that the used system configuration and methods are fully usable for this type of food analysis and also could be usable in other types of food based on the controlled fermentation. The system configuration, based on the result, will be also used in future studies.