The main aim of the study was to investigate the chemical composition, antioxidant, antimicrobial, and antibiofilm activity of Citrus aurantium essential oil (CAEO). The biofilm profile of Stenotrophonomonas maltophilia and Bacillus subtilis were assessed using the mass spectrometry MALDI-TOF MS Biotyper and the antibiofilm activity of Citrus aurantium (CAEO) was studied on wood and glass surfaces. A semi-quantitative composition using a modified version was applied for the CAEO characterization. The antioxidant activity of CAEO was determined using the DPPH method. The antimicrobial activity was analyzed by disc diffusion for two biofilm producing bacteria, while the vapor phase was used for three penicillia. The antibiofilm activity was observed with the agar microdilution method. The molecular differences of biofilm formation on different days were analyzed, and the genetic similarity was studied with dendrograms constructed from MSP spectra to illustrate the grouping profiles of S. maltophilia and B. subtilis. A differentiated branch was obtained for early growth variants of S. maltophilia for planktonic cells and all experimental groups. The time span can be reported for the grouping pattern of B. subtilis preferentially when comparing to the media matrix, but without clear differences among variants. Furthermore, the minimum inhibitory doses of the CAEO were investigated against microscopic fungi. The results showed that CAEO was most active against Penicillium crustosum, in the vapor phase, on bread and carrot in situ.

Food quality and safety belong to the most important factors of building the image of the product, brand, or country of origin at the local, regional or global markets. The main aim of the paper is to compare the food products quality perception in the selected countries of central Europe: Poland, the Slovak republic and the czech republic. Different aspects of the food products quality perception were considered during our research as food hygiene, product safety, taste, brand, quality mark and safety processes in food manufacturing. The methodical approaches of the paper are based on the questionnaire survey, and, consequently, the cluster analysis defining the consumer's perception typology. The computations were processed by using the statistical program SAS. The research results point at the food hygiene as the most important qualitative factor for the respondents in all three countries. on the other hand, the packing as a factor is considered as of either a less importance or an irrelevant one in terms of the product quality perception.

Galambošová J., Rataj V., Prokeinová R., Prešinská J., 2014. Determining the management zones with hierarchic and non-hierarchic clustering methods. Res. Agr. Eng., 60 (Special Issue): S44-S51.Delineation of the management zones of a field is commonly used in precision agriculture technology. There are many techniques used to identify management zones. The most used technique is k-means clustering, where the number of clusters is managed by the user. The paper deals with clustering the yield data and electromagnetic data of a 17 ha field using the Ward's method followed by the k-means clustering method. The cubic clustering criterion was used to determine the number of clusters. Based on results, it can be concluded that it is beneficial to combine the k-means clustering method with the hierarchic method (Ward's method).

Context of sustainable consumption is based on conscious and rational behaving consumer. The retail industry, from suburban big-box stores to boutique shops, is among the most public of industries. Retailers employ millions and directly enable most consumer purchases. As such, they are in a unique position to advance sustainability by educating consumers and offering products with recycled content, durability, and ethical supply chains. In this article, we write about what leading retailers are doing or not doing to advance principals of sustainability in the products or services they sell, and how the consumers sustainably thing. The article is a part of Scientifics project VEGA 1/0874/14: Use of neuromarketing in visual merchandising of food industry. The main aim of our articele is through the selected statistics methods, to analyse an impact of sustainability on consumer decision and the processes in doing a good business in final visual merchandising. Through Apriori and association rules methods, we modelled a prototype of sustainable consumer on the basis of our questionnaire research, done in 2013 year and we mention a consumer behavior to food waste.

Soil is a sensitive ecological factor. Biodegradable materials from the environment can also be used to deal with serious ecological problems. Soil affecting by remediation medium - garden compost - was analysed for toxic cadmium (Cd) in terms of environmental protection. The objective of this research was to analyse soil and compost at foothill locality of the Tribeč Mountains (Southwestern Slovakia) in the years 2015−2017 to determine Cd contents in soil and compost, pH and to assess Cd bioavailability. The analyses were carried out using the Atomic Absorption Spectrometry with seven-step Selective Sequential Extraction methods. The results obtained were evaluated statistically using the SAS 9.4 software method by Spearman’s correlation coefficient. The results showed that Cd contents in soil had reached 2.96 mg kg−1 and soil with compost (the ratio 1:1) 2.71 mg kg−1 dry matter. Cd contents in the soil exceeded maximum allowed limit of 196%. And deceased by 25% after adding compost. The pH in soil with compost varied from 6.78 to 7.98. The pH prevented the mobility of Cd about 8.3% in average. Statistical dependence was high, which was demonstrated for relationship between Cd in soil, pH and compost. Available Cd forms in soil were 53.3% and soil with compost were 45% in average. The garden compost as a remediation medium reduced Cd bioavailability.