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Publications (47)
Climate change, linked with an increase in temperature, contributes to the possibility growing of non-typical and lesser-known vegetable species in the Slovak Republic, including okra. Seven okra cultivars were tested as part of this study, which focused on the basic yield parameters, antioxidant activity and total polyphenol content in okra fruits...
The study monitored the effect of differentiated mineral nutrition of microgreens species by solution of sodium selenate (2 mg Se/L) on the content of Se, chlorophylls, and other minerals. Chlorophylls were measured spectrophotometrically, Se by electrothermal atomic absorption method (ETAAS) with Zeeman-effect background and elements' concentratio...
The research task was focused on an important type of root vegetable – carrot (Daucus carota L.), cultivar ´Romance F1´ (family: Apiaceae). The main goal was to verify the application of soil biostimulant Agriful (based on humic and fulvic acids) and its impact on the yield potential and quality of carrot roots. Nowadays, it is the common need to i...
Cucurbita moschata Duch. is a seasonal crop, appreciated for its nutrimental and bioactive components especially carotenoids. From the whole edible plant, fruit is most often consumed which can be stored and also processed. Six varieties—Liscia, Matilda, Orange, Serpentine, UG 205 F1, and Waltham—of Cucurbita moschata Duch. were investigated, in or...
The chapter describes changes in the selenium content during storage on the example of processing carrots and preserving tomatoes, peas, and cabbage by methods characteristic of vegetables. The results showed no significant changes in total selenium content during carrot storage. The results of analyzes after thermal preservation of peas in brine i...
The choice of the method for the determination of selenium in biological samples depends on the form of selenium present in the sample to be analyzed. The choice of method depends on whether the selenium is to be determined from the total organically bound selenium, total organically bound selenium in the protein fraction, or individual selenium am...
This chapter is devoted to selenium and its role in organism. Selenium has been proved as an essential element for animals and humans. Perception of its role changed from the toxic toward essential element as in the last decade its importance has been described through its biochemical functions. Selenium can be found in the environmental components...
The level of selenium in the human body depends on its concentration in food. Selenium enters the food chain primarily from soils, its content in plants is a function of the soil–plant system conditions. Analysis of selenium status suggests that fortification of the soil substrate with sodium selenate appears to be effective and undemanding form of...
The risk of phytotoxicity and accumulation of selenium in the soil is significantly reduced by foliar application of selenium to photosynthetically active parts of plants. The use of foliar nutrition in practice has only expanded in recent decades, mainly due to the development of spraying techniques used in plant protection. Environmental factors...
Selenium plays a significant role in preventing certain types of cancer and cardiovascular diseases. The level of Selenium in the human body depends on its concentration in food. In turn, the content in vegetable crops is a function of the soil-plant system. There are many countries in the world with low Selenium content in the soil. The average da...
In rational nutrition, vegetables play an important role due to their high biological and low energy value. The most widespread vegetables in our country belong to root vegetables. They are grown mainly for bulbs, corms, rhizomes, fleshy roots, and hypocotyl tubers. Root vegetables can be eaten raw or cooked. Carrot (Daucus carota L.) is a basic re...
This study aimed to evaluate yield parameters, antioxidant activity (AOA), total polyphenol content (TPC) and total soluble solids (TSS) in beetroot cultivars with different flesh colours. Field experiments were established at the Slovak University of Agriculture in Nitra in 2016 and 2017. Within the study, 16 beetroot cultivars were tested, includ...
The sweet potato (Ipomoea batatas L.) is less-known vegetable species in Slovak Republic. It is known for sweet taste and various possibilities of use in gastronomy. In this study, the effect of cultivar on the important quantitative (yield of marketable tubers per plant, average weight of marketable tubers, yield of marketable tubers per hectare,...
The work aimed to determine the potential of selenium incorporation into seeds of selected species of Ocimum spp. after fortification with a foliar solution of sodium selenate at a concentration of 50 g Se · ha ⁻¹ . In a 2-year trial, the selenium content was determined by electrothermal atomic absorption method with Zeeman background correction. M...
The aim of this work was to evaluate the yield parameters (number of fruits per plant, total yield per plant and average fruit weight), level of ascorbic acid, and pungency (SHU units) of different genotypes of chilli pepper in protected cultivation in the Czech Republic in order to identify a suitable and prospective chilli cultivar which could be...
Basil is one of the most used spices in Slovakia. Selenium is an essential element for normal growth and development of the organism and because Slovak soils are poor in this element, the various ways of this antioxidant increasing in the food chain has being sought. The aim of the work was to evaluate influence of selenium biofortification on sele...
The study describes a method for the determination of ascorbic acid (AA) with the technique of high performance liquid chromatography with UV detection (UV-HPLC) modified for routine analysis of agricultural products. For successful use of the method in the test laboratory practice, the reliability of using this method has been confirmed by validat...
Genus Mentha belongs among the important part of spice, aromatic and medical plants. It includes a large amount of varieties and forms which are not spread generally because of low knowledgeability about possibilities of individual varieties using and also about their high content of bioactive substances. Five less-known varieties and forms (Mentha...
Food safety is a very frequent topic. The article deals with the problems of fortification of the most grown mushroom in Slovakia, and the 3 rd most grown mushroom in the world, Pleurotus ostreatus. Due to the high environmental pollution of soils and air, there is a risk of the production of dangerous fruiting bodies with high heavy metals content...
Changes in mechanical and thermal properties of biodegradable mulches based on plasticized PLA/PHB filled with 3 wt% of carbon black were investigated during natural ageing in real soil environments after application for one season. The natural ageing process changes were evaluated under three different conditions of the mulching films: (a) buried...
The sweet potato (Ipomoea batatas L.) is relatively known vegetable species, but it is grown only on small area in the Middle European region. Its cultivars are characterized by different colour of tuber flesh which can be white, beige, yellow, orange and purple. The aim of this study was to determine and compare selected qualitative parameters of...
Celery, Apium graveolens var. Dulce (Mill.) is a biennial plant, lesser used in Slovakia in comparison with celeriac, but with increasing popularity because of its very health beneficial properties. The aim of the study was to evaluate quantitative (yields) and qualitative (chlorophyll a and b, soluble solids) parameters in selected patioles of cel...
The species Cucurbita pepo includes several types of squashes; in Slovak Republic, well-known and oftenly grown squash types are patisson, zucchini, spaghetti squash, oil pumpkin etc. Several interesting squash types of Cucurbita pepo are grown abroad, including Acorn squash which is well-known mainly in USA. The aim of this study was to evaluate t...
Horticultural crop selenisation is one of the ways of organic selenium increasing in the food chain. On the other hand, there is need to control influence of selenisation on other important quantitative and qualitative parameters, because of possibility of their inhibition or decreasing. The aim of the work was to evaluate changes in the content of...
The aim of this study was to determine the effect of thermal treatment on the total carotenoid content in sweet potato tubers (cv. Beauregard). Within study, following methods of thermal treatment were tested: control (without treatment); boiling (10 min.) and baking at 180 °C (30 min.). Before treatment, tubers were peeled and sliced. Obtained res...
Organic production of vegetables has increased in recent years. Pumpkin is a well-known edible plant, which has substantial nutritional properties due to the presence of unique natural substances. Pumpkin is one of the most commonly grown organic vegetables in the Czech Republic. The aim of this work was to compare the quality of organic and conven...
Three treatments were used in two-year (2014–2015) field experiments with broccoli cv. Bejo 2914 F1: (1) untreated control; (2) Zn<sub>0.75</sub> – Zinkuran SC as foliar fertiliser at the rate of 0.75 L/ha (375 g Zn/ha); (3) Zn<sub>1.50</sub> – Zinkuran SC as foliar fertiliser at the rate of 1.50 L/ha (750 g Zn/ha). The statistically significant di...
Cauliflower (Brassica oleracea var botrytis) as a member of the family Brassicaceae belongs to worldwide popular vegetable with using in all kinds of cuisine. The aim of the work was to find out the effects of nutrition and fertilization (in dependence on the amount of nitrogen) on the yield of florets as well as on selected qualitative characteris...
Humans and other primates have lost the ability to synthesize vitamin C and therefore the only source is diet. Vitamin C or ascorbic acid has labile nature, it is removed or destroyed in specific degree immediately after harvest, but storage and post - harvest processing also contribute to its degradation. The aim of work was to determine the vitam...
The adsorption of contaminants plays an important role in the process of their elimination from a polluted environment. This work describes the issue of loading environment with lead Pb(II) and the resulting negative impact it has on plants and living organisms. It also focuses on bentonite as a natural adsorbent and on the adsorption process of Pb...
The goal of this study was to determine the content of bioactive substances (chlorophyll, carotenoids, vitamin C) in less-known leafy vegetable species, such as Chinese mustard (Brassica juncea (L.) Czern. Et Coss.), mibuna (Brassica rapa ssp. japonica Makino) and mizuna (Brassica rapa ssp. nipposinica (Bailey) Hanelt). Within study, two cultivars...
The sweet potato (Ipomoea batatas L.) belongs to very important crops from aspect of its world production. It is grown in large areas in Asia, on the contrary, sweet potato production in Europe presents minimal part of its total world rate. The sweet potato is less-known crop, grown only on small area in home gardens in Slovak Republic. Tubers of s...
The production of sweet corn has been increased recently. It is a very delicious vegetable species with wide variety assortment. Nowadays, new varieties which come to markets are characterized by improved properties, higher sugar content and their stability in storage. Thus, it is necessary to know basic variety parameters for better orientation in...
The winter squash is an important source of antioxidants, especially carotenoids. The aim of submitted
research work was to determine the effect of genotype, storage and different methods of technological
processing (baking, boiling and sterilization) on the content of ascorbic acid and total carotenoids
in fruits of winter squash (Cucurbita mos...
The paper is aimed on the investigation of natural ageing of plasticized poly(lactic acid)/poly(β-hydroxybutyrate) PLA/PHB blend films during their one-season application as mulches under real field conditions in the western part of Slovakia. Acetyl tributyl citrate (ATBC) was used as the plasticizer. The analysis was performed on three differently...
The effect of nitrogen (N), sulfur (S), and zinc (Zn) fertilization on the yield quantity and selected qualitative parameters of broccoli was studied in an experiment carried out in Nitra (Slovak Republic) during 2011 and 2012. In this experiment, the following fertilization treatments were tested: control; N200S80 (fertilized to the supply level:...
The green pea is ranged between the crops with high antioxidant potential. This potential is connected with phytochemical components mainly with polyphenols. All these bioactive chemicals have disease-fighting properties. In real human diet there is no usually possibility of fresh garden pea consumption during the whole year. The total polyphenol c...
The aim of submitted article was to estimate qualitative and quantitative characteristic of Serbian tomato varieties grown in conditions of Slovak republic and to compare the results with control tomato variety and evaluate their potential for the Slovak market. There were included 6 Serbian tomato varieties: 'Fantom VFCTm F1', 'Marathon ASVF F1',...
In the experiment, we examined the effect of different package materials (food foil, microtene bag, food box) on the shelf-life of carrot roots compared to the variant without package (carrot stored only on the tray) in laboratory and refrigerator. All package materials significantly prolonged the storage period compared to the un-packed carrot roo...
The aim of this work is to determine the impact of differentiated nutrition, using different rates of nitrogen and sulphur, on the level of antioxidants, particularly vitamin E1 (α-tocopherol), vitamin C and β-carotene in the broccoli rosette. The experimental broccoli variety was Tiburon F1. It is a strong medium-late variety with a vegetation per...
The average vitamin C content of fresh carrots was 56 mg.kg⁻¹. Amount of vitamin C was reduced by the length of storage and storage environment. On average, the most significant decrease in vitamin C to 24.4 mg.kg⁻¹ under laboratory conditions was reported after 56 days when stored carrots were packed in plastic box. When stored in a refrigerator,...
The small field experiment with broccoli (variety ‚Tiburon F1‘) was established in The Botanical Garden of Slovak University of Agriculture in Nitra. In this experiment, we investigated the effect of four variants of nutrition on the broccoli yield, content of sulforaphane and vitamin C in broccoli florets. The first variant of nutrition was a cont...
Nitrogen and sulphur fertilization positively affected on crop yields and bioactive
compounds (vitamin C, E1 and ß-carotene) content in cauliflower edible heads.
Applying fertilization doses of 250 kg N.ha-1 and 60 kg S.ha-1 compared to the control
improved cauliflower harvest by 15,2 t.ha-1. Increased fertilization doses of nitrogen
and sulphur si...
In this scientific monograph, importance of vegetable in human nutrition is
emphasized. It includes a lot of knowledge about valuable nutritional
compounds – vitamins, mineral and antioxidant compounds in broccoli and
cauliflower, or vegetable generally.
The monograph is focused on the impact of nitrogen and sulphur
fertilization to the content of...
In this scientific monograph, importance of vegetable in human nutrition is
emphasized. It includes a lot of knowledge about valuable nutritional
compounds – vitamins, mineral and antioxidant compounds in broccoli and
cauliflower, or vegetable generally.
The monograph is focused on the impact of nitrogen and sulphur
fertilization to the content of...
In the field experiment with cauliflower, we investigated the effect of four different variants of nitrogen and suplhur fertilization on quantity and quality of cauliflower in the term of sulforaphane content and nitrate accumulation.
The influence of fertilization was statistically significant between control variant and fertilization variants and...
Projects
Project (1)
International Visegrad Fund Project Nr. 11530015 "Lesser-known species of vegetables, medicinal plants and edible mushrooms: new growing trends in context of V4 countries cooperation" is focused on the exchange of materials and information in the growing of medicinal and aromatic plants (MAPs) as well as lesser-known vegetables (including edible mushrooms).
The output of partial project processes is creation of cultivar collection with medicinal and aromatic plants (MAPs), less-known vegetables and edible mushrooms, followed by a workshop – scientific seminar in the topic under professional guarantee of submitter and the project partners.
Cultivar collection is interactively connected to the network by the help of QR codes; the web page will be serving besides scientific knowledge for propagation of the idea of economic and social cohesion of Visegrad countries.
http://fzki.uniag.sk/lksvmpem/index.html
