Július Árvay

ORCID: 0000-0002-9484-8795
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Research Areas
  • Heavy metals in environment
  • Heavy Metals in Plants
  • Phytochemicals and Antioxidant Activities
  • Fungal Biology and Applications
  • Lichen and fungal ecology
  • Mercury impact and mitigation studies
  • Microbial Metabolites in Food Biotechnology
  • Essential Oils and Antimicrobial Activity
  • Tea Polyphenols and Effects
  • Seed and Plant Biochemistry
  • Environmental Toxicology and Ecotoxicology
  • Food composition and properties
  • Fermentation and Sensory Analysis
  • Horticultural and Viticultural Research
  • Sperm and Testicular Function
  • Meat and Animal Product Quality
  • Potato Plant Research
  • Nutritional Studies and Diet
  • Integrated Water Resources Management
  • Bee Products Chemical Analysis
  • Heavy Metal Exposure and Toxicity
  • Mycorrhizal Fungi and Plant Interactions
  • Botany and Plant Ecology Studies
  • Phytochemistry and Biological Activities
  • Radioactivity and Radon Measurements

Slovak University of Agriculture in Nitra
2016-2025

AgroBio
2019

The aim of this study was to evaluate the contamination six edible wild species mushrooms (Boletus pulverulentus, Cantharellus cibarius, Lactarius quietus, Macrolepiota procera, Russula xerampelina and Suillus grevillei) by heavy metals (Hg, Cd, Pb, Zn, Cu, Ni, Cr, Co, Mn Fe). Mushroom samples were collected from sites contaminated emissions mining processing polymetallic ores in operation during period 1969–1993 Rudňany, southeast Slovakia. four spanned up a 5-km distance emission source....

10.1080/03601234.2014.938550 article EN Journal of Environmental Science and Health Part B 2014-09-04

The total polyphenolic content and the antioxidant activity have been analyzed in ground beans of green, light, medium dark roasted coffee by UV-VIS spectrometry. Water extracts showed highest levels polyphenols green light coffees where (TPC) ranged from 49.19 ± 0.70 to 74.05 0.28 59.79 1.45 38.34 1.26 g GAE.kg−1, respectively. In roast samples it 43.90 3.07 0.28g GAE.kg−1 37.44 0.63 47.41 0.69 GAE.kg−1. capacity (TAC) reached values (DPPH inhibition ranging 69.08 1.33% 78.55 0.89%)...

10.1080/03601234.2020.1724660 article EN Journal of Environmental Science and Health Part B 2020-02-18

Processing is one of the most crucial factors affecting polyphenol content in foods. Therefore, study aimed at evaluation heat treatment effects (microwaving, steaming, baking, and boiling) on chlorogenic acids, total polyphenols, antioxidant activity three varieties sweet potato with different flesh colors (Beauregard—orange-fleshed, O’Henry—white-fleshed, 414-purple—purple-fleshed). According to high performance liquid chromatography analysis, acid was predominant potatoes. Obtained...

10.3390/molecules27061884 article EN cc-by Molecules 2022-03-14

The fermentation process has been widely used to improve plant-based foods' nutritional and nutraceutical properties. This study aimed investigate compare the impact of sourdough on bioactive content profile, antioxidant antihypertensive activities, as well anti-inflammatory properties fermented (FS) non-fermented (NFS) flour from Tuscan Triticum dicoccum wheat (spelt) tumor necrosis factor-alpha (TNF-α)-inflamed human intestinal epithelial cells (HT-29). FS showed significantly higher total...

10.3390/ijms24076283 article EN International Journal of Molecular Sciences 2023-03-27

Abstract This study aimed to evaluate the mineral content, and content of bioactive compounds in fruits Cornelian cherry ( Cornus mas L.). Neochlorogenic acid, chlorogenic caffeic rutin were determined samples. Vitamin C ranged from 610.36 1344 mg kg −1 FW. Content K, Ca, P, Mg, Na samples 1750.8 2645.7 FW, 281.14 561.62 180.38 294.95 68.19 115.43 2.48 71.33 FW respectively. Fe, Zn, Cu, Mn, Ni, Cr, Co 2.77 4.88 0.49 0.99 0.25 0.53 0.07 0.17 0.02 0.13 0.01 0.08 Variations across cultivars...

10.1007/s00217-024-04513-z article EN cc-by European Food Research and Technology 2024-03-30

Phenolic compounds (total polyphenol content – TPC, chlorogenic acid CGA, neochlorogenic neoCGA, cryptochlorogenic cryptoCGA) and the antioxidant activity (AA) by DPPH FRAP methods were determined in raw peel flesh of sweet potatoes (white cv. Japanese, orange Beauregard), heat-treated (steamed, boiled, microwaved, baked). The TPC orange-fleshed ranged from 1126 (Croatia Beauregard) to 3248 (Austria mg/kg dry weight. Heat treatment significantly increased CGA neoCGA content. CryptoCGA...

10.1016/j.jafr.2024.101271 article EN cc-by-nc Journal of Agriculture and Food Research 2024-06-28

The contamination level of 92 samples (12 species) wild edible mushrooms and underlying substrates with heavy metals (Cd, Cu, Hg, Pb Zn) in the Slovak Paradise National Park that borders a region historical mining processing polymetallic ores, were determined. collected analyzed using atomic absorption spectrophotometry. determined separately hymenophore (H) rest fruit bodies (RFB). Bioaccumulation factor as well ratio metal content H RFB calculated. Cadmium lead contents exceeded statutory...

10.1080/03601234.2015.1058107 article EN Journal of Environmental Science and Health Part B 2015-09-11

Heavy metals (Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) in soils plants of four different ecosystems (forest, grassland, agro urban ecosystem) at distances from the source pollution were analyzed order to assess compare soil contamination various determine potential accumulation depending on place they inhabit. Correlation relationships among heavy differ ecosystem, between plant, showed significant correlation for Pb Zn. Contamination factor (Cf), degree (Cd) load index (PLI) used level...

10.1080/10934529.2016.1274169 article EN Journal of Environmental Science and Health Part A 2017-01-27

The aim of the present study was to determine microbial composition, antioxidant activity, and content phytochemicals in prepared kombucha tea beverage. Microbiota identified by MALDI-TOF mass spectrometry, activity beverage tested ABTS phosphomolybdenum method, total (polyphenols, flavonoids, phenolic acids) measured colorimetric methods. major acids, methylxanthines were detected high performance liquid chromatography (HPLC). Candida krusei, Sphingomonas melonis, aquatilis, Brevibacillus...

10.1556/066.2019.48.3.7 article EN Acta Alimentaria 2019-08-06

Risk elements in blood matrices can affect human health status through associations with biomarkers at multiple levels. The aim of this study was to analyze 15 macro- and microelements the serum women overweight (BMI ≥25 kg/m2) obesity ≥30 examine possible biochemical, liver enzymatic parameters, markers oxidative stress. Based on power calculation, involved (in postmenopausal stage) (n = 26) 22), aged between 50–65 years. Multifrequency bioelectrical impedance analysis used measure body...

10.3390/life14040465 article EN cc-by Life 2024-04-02

This study examines the amino acid composition and biogenic amine formation in common carp (Cyprinus carpio) meat subjected to baking frozen storage for one three months. Amino acids were analyzed using cation-exchanged liquid chromatography hydrolysates, while amines determined via reverse-phase high-performance with pre-column derivatization dansyl chloride. The analysis focused on 15 acids, glutamic being most abundant tyrosine least present both fresh baked samples. total content...

10.55251/jmbfs.11810 article EN Journal of Microbiology Biotechnology and Food Sciences 2025-01-21

This study assessed the potential of dried Cayenne pepper (CP; Capsicum annuum L.) as a natural additive to rice bran oil (RBO), grape seed (GSO), and virgin olive (OO). Key analyses included peroxide acid values, oxidative stability (Rancimat method), composition fatty acids (FAs) (GC-FID antioxidant activity (AA; DPPH antimicrobial properties (disc diffusion method). Capsaicin dihydrocapsaicin contents in CP were quantified (HPLC-DAD method) 1499.37 ± 3.64 1449.04 5.14 mg/kg DW,...

10.3390/molecules30040927 article EN cc-by Molecules 2025-02-17

Three moss (Pleurozium spp., Polytrichum and Rhytidiadelphus spp.) two lichen (Hypogymnia physodes Pseudevernia furfuracea) taxons covered in the bags were used to monitor air quality. Bags exposed at different distances from tailing pond because of insufficient security source heavy metal pollution. Moss/lichen for six weeks 0-, 50-, 100-, 150- 200-m Slovinky pond, main wind direction (down valley). Accumulation ability metals expressed by relative accumulation factor (RAF) increases order...

10.1080/10934529.2016.1221220 article EN Journal of Environmental Science and Health Part A 2016-09-09

Polyphenol-rich foods could have a pivotal function in the prevention of oxidative stress-based pathologies and antibacterial action. The purpose this study was to investigate vitro antimicrobial activity, as well vivo antioxidant capacities wild Prunus spinosa L. fruit (PSF) from southeast regions Italy. total phenolic content (TPC) quantified, single polyphenols were analyzed by HPLC-DAD, showing high rutin 4-hydroxybenzoic acid levels, followed gallic trans-sinapic acids. PSF extract...

10.3390/foods9010005 article EN cc-by Foods 2019-12-19

The high-performance liquid chromatography coupled with a diode array detector (HPLC-DAD) was optimized for the simultaneous determination of 11 compounds, belonging to polyphenols (gallic acid and seven catechins) methylxanthines (caffeine, theobromine, theophylline). results obtained all validation parameters HPLC-DAD method showed that is sensitive enough routine analysis basic chromatographic equipment, thus it has significant potential be highly applicable in common laboratory practice....

10.1016/j.heliyon.2024.e35819 article EN cc-by-nc-nd Heliyon 2024-08-01

Common buckwheat (Fagopyrum esculentum Moench) is a valuable source of proteins, B vitamins, manganese, tryptophan, phytochemicals with an antioxidant effect, and the natural flavonoid rutin. Due to its composition, supports human immune system, regulates blood cholesterol, suitable for patients diabetes or celiac disease. The study aimed compare allocation selected phenolic acids (neochlorogenic acid, chlorogenic trans-caffeic trans-p-coumaric trans-sinapic trans-ferulic acid) flavonoids...

10.3390/plants10061142 article EN cc-by Plants 2021-06-03

Edible mushrooms represent a food with high nutritional properties, and their consumption has positive effect on the health of consumers. The aim paper is to identify behavior preferences consumers in edible Slovakia. was achieved by conducting consumer survey using snowball sampling method sample 1166 respondents Slovak Republic, which 1032 were mushrooms. Using statistical methods (the Chi-square test independence, Kruskal-Wallis H test, Friedman as well categorical principal component...

10.3390/foods12030657 article EN cc-by Foods 2023-02-03
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