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Preface

According to the long-term plan accepted by the Editorial Board, at the end of June 2013 we present to our readers the 35th issue of the Polish Journal of Commodity Science. Recently we have established a new part of an international scientific committee theme editor of the packaging division and the statistical editor for our journal. 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. 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 http://www.tpj .pr.radom.pl. In the first days of this spring Polish commodity science suffered a very serious loss. On 11 April 2013 Dr Mieczyslaw Skrzypek, retired reader at the Department of Commodity Science, Krakow University of Economics passed away. Memory of dr Skrzypek was prepared by his associates. A series of 13 articles in the current issue begins Ziajka with the work on commodity studies and its role in economic development. The author believes that as a result of political changes that took place in the late twentieth century commodities are subject to significant changes, which necessitates the need for change in education. Commodity scientists must be prepared to multiple job (or even profession) changes. Therefore, the educational process in commodity science should also take into account the graduate’s profile with a high intellectual level and habits to continuously improve knowledge and skills. In the consecutive work Luft and Walasik discussed issues related to the management of legal risk in the company. The authors reviewed the definitions of legal risk described in the literature and discussed various ways to manage legal risk in the company. The classification of Polish businesses was also introduced. The examples illustrating the selected types of legal risk and the proposals of their minimization were discussed. Within the last years, a significant proportion of medical withdrawals from the market due to the defectiveness of the components used has been observed. The issue of supplier management in the medical device sector is the subject of Felczak paper. The author states that the defects on the supply side generate 14% of the withdrawals from the market. The paper presents the classification of components for medical devices and discusses the implementation of new suppliers and continuous evaluation of the approved partners. The quality of medical services subject is continued in the work by Klokow. The author discusses the use of information systems as tools supporting the management of the hospital. This paper presents the hospital benefits of the implementation and operation of information systems as well as the research results on the use of these systems in the Polish health service. The functioning of information systems in hospitals is assessed. It was found that information systems were best appreciated in these hospitals that had implemented the quality management system ISO 9001 and were accredited by the Ministry of Health. In the consecutive paper Niewczas discusses the results of the survey conducted among consumers for the assessment of the potential for health risks of foods. On the basis of research conducted in the south-eastern part of Polish it was concluded that consumers perceived the risk of hazards in food through the effects of the impact of this risk and the possibility of being exposed to danger. According to the respondents meat products can be the source of greatest danger while fruit and vegetables - the smallest. In the article “The role of probiotics in health and disease of the human body” Wojciechowska discussed the health-promoting effects of probiotic bacteria, paying particular attention to their anti-cancer and anti-allergic effects and the ability to regulate many metabolic processes. Taking into account the results of the latest research, the author pointed out the possibility of stimulation Toll- and Nod-like receptors that had a key role in the immune response by probiotic bacteria. The antioxidant activity is one of the key determinants of the quality of many food products. Chemical compounds responsible for this activity in food include, inter alia, compounds of phenol structure. In the next work Jablonska-Rys, Zalewska-Crown and Slawinska discussed the results of their research on the content of polyphenolic compounds in selected coffees of the species Coffea arabica. It was found that the highest content of polyphenols characterized the instant coffee. An important factor in determining the content of polyphenols in tea infusions is brewing time. It was found that increase of brewing time to 30 minutes, raised the content of polyphenols in infusions of whole bean coffee by up to The paper by Michalak-Majewska concerns understanding of the factors influencing the purchase of green tea. On the basis of assessment of physicochemical parameters the author specified the quality of selected green leaf teas without additives and with the addition of fruit. It was found that green teas with a component of fruit such as lemon, quince and raspberry revealed a lower oxalate contents than teas without these additives. The paper “MiRNA - a novel functional component of food?” presents the latest achievements of genetics on microRNA function and its impact on the human body. In this review work the results on the fact that microRNAs could percolate from the food eaten into the consumer’s bloodstream were cited. The consecutive work by Gacek et al concerns the evaluation of the nutritional value of selected groups of beverages. The quality of energy drinks, isotonic drinks, sweetened carbonated and still drinks, fruit juices, fruit and carrot, tomato and vegetable juices as well as fruit and carrot nectars was assessed. The study included the determination of the nutrients content and energetic value of these juices and drinks. The paper by Radzio et al relates to the rapid assessment of key technological parameters of rapeseeds and rapeseed cake. The authors have developed a practical method that uses near-infrared spectroscopy. The results obtained with this method were compared to classical ones. There was a full consistency between the two methods of determining the quality of rapeseeds and rapeseed cake. The object of the tests described by Szymczak and Tokarczuk is the impact of smoking whitefish with reduced quality and technological value on its sensory qualities. The authors conclude that smoking has a positive impact on visual qualities as well as the taste and smell of whitefish meat. The last article is devoted to the quality of smoked hams available in retail stores. Florek et al investigated the quality of the products offered in retail stores in Lublin. On the basis of the physico-chemical and sensory tests it was found that the hams revealed no rendering characteristics and their organoleptic quality was very good. 35th issue of our quarterly is closed by the regular column “TPJ Announcements”. It contains a report on the national commodity conference, held in May in Olsztyn.

 I wish you a nice reading.

 TPJ Editor

 prof, dr hab. inż. Ryszard Zieliński

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