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Preface

According to the long-term plan accepted by the Editorial Board, in the middle of July2015 we present to our readers the 44 th issue of the Polish Journal of Commodity Science.Continuing efforts to widen the group of our readers we present some papers in Englishversion. Continuing efforts to widen the group of our readers we present some papers inEnglish version. As before, regardless the language of the original publication, each papercontains a wide summary in both Polish and English. The summaries of all the workspublished one can find on our webpage http://www.tpj.uniwersytetradom.pl.The series of 14 articles in the current issue of our journal is opened by two works in thefield of quality management. In the first of these works Górna concerns the impact of theobjectives included in the project of the traceability system on its effectiveness. The authorconcludes that respondents recognize efforts to ensure food safety as the most importantobjective in designing a system of traceability.The subject of Balon et al paper is the functioning of the quality management system inhospitals. The authors note that for a long time hospitals have been interested in qualitysystems to care for the quality of services and patient satisfaction. Following theimplementation an improvement in patient safety, increase in quality of health services and theprestige of the institution as well as improvement of the circulation of documents insidehospitals was noticed.The consecutive 8 works relate to food quality. The object of the research by Ocieczekand Ruszkowska is the quality of foodstuffs intended for infants. The authors determined thesorption properties of foods for infants. Sorption isotherms for water vapor of the productstested were determined and described in terms of GAB model. It was found that sorption ofmodified milk powders was varied and depended on the microstructure of the surface of theparticles.The paper by Kozłowska-Strawska et al. is devoted to nutritional and health benefits ofselected cereal products. The article describes cereal products available on the Polish marketin terms of the content of major nutrients, dietary fiber, energetic value and the glycemicindex.Michalak-Majewska et al analyze the effect of age and gender on consumption of variousforms of onion vegetables and dietary supplements with their content. The results of thestudies conducted in south-eastern Poland indicate that consumption of onion vegetables isdetermined mainly by demographic factors, but also by eating habits.In the next article Kiełdyka-Dadasiewicz et al. discuss theherbal structure of selectedmedicines and spice. On the basis of their research and analysis of available literature data,authors conclude that the herbal structure is mostly determined by agricultural practices suchas date of harvest and foliar nutrition.The subject of research by Kudełka and Małysz was to assess the authenticity and qualityof multifloral honeys. The authors present the results of physicochemical tests of honeysoffered on the market in Lesser Poland. It was found that multi-flower honeys satisfied therequirements specified by the relevant standards. It was also observed that the origin of honeywas the factor which significantly differentiated the majority of quality parameters of honey.In the consecutive paper Wojtowicz presents the results of analysis of new herbal flavormaterials proposed for the preparation of coffee substitute. The applicability of rosehips,rowan, sea buckthorn and dandelion root after roasting and grinding was studied. Theusefulness of these unusual ingredients to produce new species of coffee substitute, especiallyroasted sea buckthorn and rosehips was confirmed.The subject of Wilczyńska research are antioxidant properties and color of traditionalhoney. The author conducted a study of color parameters and evaluated the antioxidant properties of honey coming from the province of Pomerania using the method of radicalDPPH. The results indicate that different types of honey slightly diversified by bothantioxidant activity and color parameters.The antioxidant properties and content of polyphenolic compounds in yellow and redonion is the subject of research by Lachowicz and Wisniewski. The content of bioactivecompounds in these varieties of onions was determined by ultra performance liquidchromatography and the antioxidant potential was measured by the methods of DPPH, FRAPand ABTS. The presence of eight phenolic compounds in the examined onion varieties wasconfirmed. It was found that the antioxidant activity of onion mainly depended on its type.The next four articles refer to studies on the quality control of non-food products. In thefirst one Popek presents the results of research on the quality parameters of metal oreconcentrates. Concentrates of metal sulfides are fragmented – this supports their oxidation andtendency to self-heating. This in turn threatens the safety of transport of metal concentrates bysea. The author presents the results of research on the effects of qualitative parameters ofcopper sulphide concentrates on safety of their maritime transport.In the next work Zielinski discusses the application of topological matrices in prediction ofselected physicochemical properties of aqueous solutions of surfactants. In numerousexamples it was shown that the distance matrix and the Wiener numbers could be used todetermine the effect of changes in the structure of the hydrophobic part of the surfactant on itsproperties such as viscosity, Kraft point, or conductance of aqueous solutions.The subject of Kwaśniewska et al. paper is the surface activity of amphoteric surfactants.The authors obtained a few sulphobetaine surfactants comprising a single long alkyl chain andvarious linkers separating ionic moieties. It was found that these compounds exhibited theability to reduce the surface tension. On the basis of contact angle measurements it was provedthat the aqueous solutions of simple sulfobetaines obtained had good wetting ability of solidsurfaces.In the last paper Bocho-Janiszewska presents the results of research concerning theevaluation of the impact of certain builders on the properties of liquid washing detergent. Theauthor experimentally determined the effect of water of varying hardness and sodium citrate,sodium edetate and sodium tripolyphosphate on detergency performance of model washliquor. It was found that in soft water the best properties were obtained in the presence ofsodium citrate, whereas in hard water the other two sequestrants were more efficient.[1] 44th issue of the quarterly is closed by the regular column TPJ Announcements. Onecan find there information on the election to the Commodity Science Board, Poznań branch ofPolish Academy of Sciences.

I wish you a nice reading

Prof. dr hab. inż. Ryszard ZielińskiTPJ Editor

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