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According to the long-term plan accepted by the Editorial Board, in July 2016 we present to our readers the 48th issue of the Polish Journal of Commodity Science. Continuing efforts to widen the group of our readers we present some papers in English version. Continuing efforts to widen the group of our readers we present some papers in English version. Yet, we would like to remind that now only papers written in English will be accepted by the editors. As before, regardless the language of the original publication, each paper contains a wide summary in both Polish and English. The summaries of all the works published one can find on our webpage
A series of 18 articles in the current issue of our journal is opened by Karkalikova’s work on the importance of customer awareness regarding the selected management systems. The author discusses the results of a survey conducted among residents of Slovakia. Based on the research it was found that making decisions on purchasing products or services Slovak consumers perceived both price and quality, but also took into account whether the organization was socially responsible.
In the next paper Majkrzak and Salerno-Kochan look for answers to the question of the role of the quality of the garment in the decision-making processes of purchasing clothing by young female consumers. It was found that purchasing decisions were neither strongly linked to advertising campaigns conducted by clothing companies, nor to a desire to follow fashion trends.
5S method is often used for continuous improvement of processes. The result of these actions is the creation of an efficient, clean and ergonomic working environment ensuring the required quality of products at minimized outlays. In the consecutive article Kravchuk and Kocira present the results of the survey concerning the evaluation of the implementation of the 5S method in the enterprise. The results of the study show the benefits of the implementation of the method described and the problems and difficulties experienced during the implementation phase of 5S.
The next nine papers discuss selected issues concerning the formation and control of food quality. The article by Król and Michalska is devoted to food labeling. The authors discuss the issue of certification of food products on the Polish market within the European systems of food labeling.
In the second paper Lech discusses regulations, economic aspects and strategies for the detection of genetically modified foods (GMOs). It was noted that in order to give consumers a free choice of whether to eat this food, the European Union introduced regulations requiring labeling of food products containing more than 0.9% GMO substrates. In order to ensure an appropriate level of consumer safety, food shall be subject to checks to detect unauthorized use of GMOs.
In the next article Skotnicka and Śmiechowska discuss the possibility of using contemporary sources of fiber in the design of food which regulates the appropriate level of satiety. The authors pay special attention to the fiber content in whole grain, gluten-free foods.
Włodarska and Sikorska applied sensory descriptive analysis to assess the quality of clear and cloudy apple juice available in the market. The authors evaluated the efficiency level of the panel using analysis of variance as a statistical tool to determine the differences between the products and to evaluate the sensitivity of sensory assessors. It was shown that the method used made it possible to evaluate the efficiency of the sensory panel.
The content of bioactive substances in vegetable oils and industrial fats which have a positive impact on human health, is the subject of research by Zaborowski and Przygoński. The authors present the results of the determination of tocopherols and tocotrienols in several cold-pressed oils and commercial products. It was found that the method of high performance liquid chromatography with fluorescence detector permitted the quantitative determination of the content of various derivatives of tocopherol.
The paper by Newerly-Guz presents measurements of color of turmeric powder and dry roots. The high antioxidant activity of turmeric was demonstrated. It was found that the origin of samples of turmeric had an impact on the quality determinants, such as the total polyphenol content and antioxidant activity.
Determination of essential oil in the fruits of caraway is the subject of research by Huzar and Wodnicka. In the studies of the composition of the distillate steam a liquid chromatography with mass detector was employed. It was found that the main components of the resulting oil were monoterpenes, oxygenated monoterpenes and sesquiterpenes.
In the next work Paszczyk Brandt and discuss the results of the determination of linoleic acid with conjugated bonds (CLA) in fresh and stored kefirs. The gas chromatography with a flame ionization detector was applied. It was proved that storing kefir at 8°C for 21 days resulted in significant reduction of the CLA content.
The purpose of the research by Sawicka et al. was to assess the effect of cultivation technology on the functional characteristics of the tubers of early potato varieties and chips. It was shown that the response of the tested potato varieties on the technology of cultivation depended on the potato variety. It was found that high doses of nitrogen fertilizers reduced the quality of fries by degradation of their color, texture, flavor and an increased their oil content.
In the next paper Syguła-Cholewińska and Sawoszczuk discuss modern methods of monitoring microbiological hazards in archives and museums. Fast non-invasive methods of detecting the presence of microorganisms based on the non-breeding techniques were described. Possible applications of GC-MS method and analysis of profile of volatile organic compounds (MVOC's) issued by molds during their development on the historic materials were presented.
The consecutive article is devoted to multilayered paper cores which can be used as supports for winding various types of tapes, films, fibers, cables, labels, and many other materials, as packaging material, as shuttering for the production of concrete pillars. In this paper Siuda and Zielinski present the results of the study on the strength parameters of multi-layer paper cores composed of various number of paper layers of various density.
Śliwa et al. presented the results of stability tests of flavonoids in extracts from elderberry blossoms, obtained by micellar extraction with whey protein as the eluent. It was found that the extracts obtained in this way revealed a high stability. The proposed method allows to eliminate ethoxylates in the extraction process.
In the next work Seweryn et al. present the results of studies on assessment of the safety of hand dishwashing liquid made with the addition of extracts of the berry plants obtained under the conditions of supercritical CO2. It was found that the presence of plant extracts tested in hand dishwashing liquids resulted in significant improvement of their safety. It can be assigned to reducing the concentration of free monomer surfactant in the wash liquor.
Klimaszewska et al. present the results of studies of consumer preferences regarding the “heavy duty” cleaning products. The results of research conducted in Mazovia indicate that the quality characteristics of the products that affect the consumers’ choice are: efficiency, quality and advertising.
In the last paper Cholewa-Wojcik presents the results of research on the performance of packaging materials which occur during the process of aging. The author presents the results of strength tests of packaging films and selected plastic materials under accelerated ageing
conditions. The results obtained allowed to propose equations that could be used for forecasting changes in time for selected quality parameters of the studied packaging films.
48th issue of the quarterly is closed the regular column “TPJ Announcements”. It contains information about functions in the universities that will be taken by representatives of the commodity sciences in the 2016–2020 term.

I wish you a nice reading

Prof. dr hab. inż. Ryszard Zieliński
TPJ Editor




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