Vladimir Vietoris

Dr. Vladimir Vietoris

Slovak University of Agriculture
orcid

Research Focus & Metrics

Academic Career Length

17Years (2010-Present)

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

Representative Publications

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1 February 2012 in Talanta
Verified
Journal Article
Closed access
DKDmitry Kirsanov
Dmitry Kirsanov
OMOlga Mednova
Olga Mednova
VVVladimir Vietoris
Vladimir Vietoris
Paul KilmartinPaul Kilmartin
Paul Kilmartin
ALAndrei Legin
Andrei Legin

28 March 2024 in Agriculture
Verified
Journal Article
Open access
PDF file
KNKristina Nakonechna
Kristina Nakonechna
VIVojtech Ilko
Vojtech Ilko
MBMarkéta Berčíková
Markéta Berčíková
VVVladimir Vietoris
Vladimir Vietoris
ZPZdeňka Panovská
Zdeňka Panovská
Marek DoležalMarek Doležal
Marek Doležal
In the quality monitoring of 18 sunflower oil samples from the EU market, 14 were refined and 4 were cold-pressed. They demonstrated high quality of technological processing with low values of trans-unsaturated fatty acids, acid value, and peroxide value and also met the limits set by legislation in the content of process contaminants 3-monochloropropane-1,2-diol (3-MCPD) esters and glycidyl esters. Measurements of oxidative stability showed a difference in utility value. The average induction period of the oils from the traditional varieties was 2.6 h, predisposing them to cold cooking or short-term frying, while the 11.8 h of the four high oleic sunflower oils (HOSO) indicates the possibility of long-term heat stress. The nutritional benefit is the average vitamin E content of 663 mg/kg oil. The overall sensory quality of the samples was evaluated by a 12-member panel of trained assessors. On the seven-point category scale, the oils were of good to exceptional quality. The cold-pressed oils (CPOs) differed in having, on average, lower trans-unsaturated fatty acid content, process contaminants at unmeasurable levels, and, on average, higher vitamin E concentrations. The specific organoleptic properties of the CPOs were characterized by a pleasant nutty and sunflower seed flavor.

15 November 2021 in Journal of International Food & Agribusiness Marketing
Verified
Journal Article
Closed access
JBJakub Berčík
Jakub Berčík
JGJana Galova
Jana Galova
VVVladimir Vietoris
Vladimir Vietoris
JPJohana Paluchová
Johana Paluchová
Technologies that affect humans through autonomous physiological functions are nothing remotely new. A lot of research, observations and studies around the world have shown that various smells have an impact on people's changing moods, preferences, and emotions. This study, however, integrates subjective association of preference projection and objective measurements with a mobile electroencephalograph and facial recognition technology under controlled conditions in a laboratory of consumer studies to compare the impact of selected aromatic compounds for restaurants on the emotional response of respondents, as well as explicit evaluation of the selected aroma type under real conditions in order to verify targeted impact on the choice or preference of a particular food type. The paper highlights innovative approaches to assessing the impact of aromas on consumer preferences under laboratory and real conditions measured by objective parameters, as well as the importance of air quality that can cause completely opposite effects.

29 June 2022 in Critical Reviews in Food Science and Nutrition
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Journal Article
Closed access
MKMelina Korčok
Melina Korčok
JCJehannara Calle
Jehannara Calle
MVMiroslav Veverka
Miroslav Veverka
VVVladimir Vietoris
Vladimir Vietoris
The world’s population is growing rapidly and the number of elderly people with undernutrition and malnutrition is increasing. Common health problems among seniors are cardiovascular, inflammatory, gastrointestinal, and cognitive disorders, cancer, diabetes, psychological and dental problems. The food industry is trying to meet the demands of an aging society, but these efforts are not sufficient. New strategies are needed, and they demand foods development with modified textures that are easy to swallow, such as gels suitable for seniors. Depending on the specific needs of the elderly, bioactive compounds with health benefits should be included in food systems. Novel foods may play an important role in the prevention, maintenance, and treatment of age-related diseases. One of the most studied bioactive compound is β-glucan, a polysaccharide with approved health claims confirmed by clinical trials, such as “β-glucan contributes to the maintenance of normal blood cholesterol levels” and “the consumption of β-glucan from oats or barley contributes to the reduction of postprandial glucose spikes.” In this review, the health benefits, and technological properties of β-glucan for the development of senior-friendly ready-to-swallow gels were described. In addition, some patents and studies conducted in connection with the development of the gel systems were collected.

15 March 2011 in Potravinarstvo Slovak Journal of Food Sciences
Verified
Journal Article
Open access
DKDagmar Kozelová
Dagmar Kozelová
LMLadislav Mura
Ladislav Mura
EMEva Matejková
Eva Matejková
ĽLĽubomí­r Lopašovský
Ľubomí­r Lopašovský
VVVladimir Vietoris
Vladimir Vietoris
MCMarcela Chreneková
Marcela Chreneková
The market of organic products around the world increased its volume in Central and Eastern Europe with organic food market has a number of shared features, which include the relatively low demand for organic food, low share of regular customers, the problems of producers marketing, the lack of enterprises which process organic products. Consumer behavior purchasing organic foods is influenced by several factors, among which is dominated consumer personality, income, finances and lifestyle, as well as psychological factors such as perception, motivation, learning, cognition and attitudes. Cultural and social factors in consumer behavior exhibit a lesser degree. Organic fruit and organic vegetables quality is generally higher for content of biologically active substances such as vitamins, polyphenols and flavonoids. The content of pesticide residues in organic food is significantly lower than conventional production. Regular monitoring of chemical and microbiological safety of organic products already in the primary production occurring in the raw state and after working in various sectors of food, an intensification of awareness raising and targeted increased support for organic agriculture. Multifunctional sector and increased support for family farms oriented for sectors with higher added value than the home sale, production processing on the farm and so on. By support of the sale of high quality domestic production by the state will be possible to persuade more people to personal health status and greater consumption of organic food affects the health and prevent the occurrence of various diseases.

14 December 2017 in Potravinarstvo Slovak Journal of Food Sciences
Verified
Journal Article
Open access
PCPeter Czako
Peter Czako
PZPeter Zajác
Peter Zajác
JČJozef Čapla
Jozef Čapla
VVVladimir Vietoris
Vladimir Vietoris
LMLenka Maršálková
Lenka Maršálková
PMPatrí­cia Martišová
Patrí­cia Martišová
In this work, we investigated the effect of UV-C radiation (254 nm) on turbidity, microbial count and sensoric properties of the grape juices treated or not treated with sulphur dioxide. The UV-C radiation is considered to be germicidal against microorganisms. This technology is routinely used to treat drinking water. Application of this method for the purpose of treating the wine was tested in few studies. These studies have shown a positive effect on the inactivation of microorganisms, but they not dealt in detail with the sensory properties of grape juice after the treatment. The main idea of using this method appears to eliminate the sulphur dioxide from wine making technology. There are people who have a genuine allergy to sulfites, and these allergies are often linked with asthma. These people have an rapid onset of symptoms when drinking liquids like wine treated with sulphur dioxide. In our work we have found that the application of this method of treating the grape juice is problematic. Intensity of UV-C radiation increases the turbidity of grape juices. This effect was observed in all grape juices with or without addition of sulphur dioxide and also in clarified or not clarified grape juices. We found that UV-C radiation negatively affect the sensory properties of grape juices. This effect was more pronounced in grape juices treated with SO2. The smell and taste were significantly negatively changed. Exposure of grape juice treated with sulphur dioxide to UV-C radiation can probably lead to arising the sulphur compounds, which affects the smell and taste of grape juices. Also, it is very likely that the negative change in taste and smell may affect the quality of produced wines. For this purpose, we do not recommend to use UV-C treatment for the grape juice treatment. It will be interesting to conduct a detailed analysis of the grape juices composition before and after UV-C radiation treatment.