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Preface

 

According to the long-term plan accepted by the Editorial Board, in October 2016 we
present to our readers the 49th issue of the Polish Journal of Commodity Science. Continuing
the efforts to widen the group of our readers 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
http://www.tpj.uniwersytetradom.pl. Moreover, we would like to inform that all the papers
published in Polish Journal of Commodity Science from 2004 to 2014 can be now freely
accessed at our webpage.
A series of 19 papers in the current issue of the journal is opened by Nowicki work on
issues related to the management of food safety. The author points out some important barriers
and constraints associated with the implementation of food safety management system. On the
other hand, the benefits of the system allow companies to meet market requirements.
In the second article Pigłowski discusses the results of his studies on the efficiency of
detection of threats in terms of food quality. The author studied the correlation between the
results of official controls and alarm notifications recorded in the RASFF. A high correlation
between the results of official controls in the food market, and alarm notifications was
discovered. Also the latest proposals from the European Commission regarding the
amendment to the law concerning official controls on the market were discussed.
The next work deals with the environmental performance of electrical equipment.
Knoskova presents the perception of these challenges by consumers of environmentally
friendly products and the benefits brought by the use of testing the correctness of energy
labeling in this group of devices.
The problem of electrical and electronic equipment waste is the subject of the paper by
Cieszyńska. The author concludes that such wastes contain large amounts of precious metals.
The paper reviews the literature available on the possibility of using electrowaste as a valuable
source of many precious metals and presents new possible solutions.
In the consecutive work Morawska presents the results of research on the process of
degradation of polylactide in a household composter. The tests were conducted with and
without the addition of microbial formulation which accelerated the composting of organic
waste. It was found that the addition of this preparation did not accelerate the biological
process of composting polylactide foil conducted under non-sterile conditions.
A series of 10 works on commodity science of foods is opened by the Samotyja et al. work
on the assessment of the antiradical pomace oil plants activity by the DPPH radical test via
direct QUENCHER technique. It was found that the highest antiradical activity was revealed
by the evening primrose oil and walnut pomace. Slightly inferior antioxidant properties
showed pomace of sunflower seeds, black cumin and nut peanut.
An important element ensuring the quality and health safety of the meat supply chain is
current information on the temperature of the product. Korzeniowski and Cierpiszewski
studied the usefulness of temperature indicator TTI MonitorMark for monitoring temperature
during transport and unloading of meat at shops. The practical applicability of this indicator in
the supply chain of pork was proved.
Wojciechowska and Kozak present the results of tests on the degree of diffusion of oxygen
through the hybrid materials. In the study an optical method was employed. Authors proved
that all organic-inorganic hybrid materials have a better barrier against oxygen than the
unmodified polymers. It was found that the oxygen permeability of the test hybrid materials
decreased when more inorganic component was built into the polymer matrix. Possible applications of nanoparticles in food production are the subject of research by
Przybyłowski et al. The quality of the honey produced by bees fed with nanoparticles of gold
and silver was studied. It was shown that honey produced by bees fed with these nanometals
was not different from honeys obtained through traditional bees feeding . It was also found
that honey produced by bees fed with nano-silver particles exhibited an enhanced microbial
growth-inhibiting properties.
The aim of the work by Grabowska et al. was to assess selected features of the quality of
grain and flour of old genotype Warmińska Gold and stability of the tested quality
determinants along three harvest years. On the basis of the evaluation of test bakings a
significant diversity of many quality parameters depending on the harvest year was confirmed.
Changes in the various forms of calcium: ion, soluble and colloid, effected by the
fortification of the native level of this element in the raw milk were evaluated in the paper by
Czerniewicz et al. It was found that the measurement of impedance, admittance and equivalent
parallel as well as equivalent serial capacitance might give rise to the development of methods
supporting standard methods of selection of raw milk.
Lewandowicz et al. analyze the effect of the addition of sodium chloride on the rheological
properties of natural waxy starch. It was found that the addition of sodium chloride
significantly affected the process of gelatinization and viscosity of the final starch suspensions
examined. It was demonstrated that waxy starches had a much greater resistance to the
presence of salts in solution than the conventional starches.
In the next work Oprawa et al. present the results of research on the antioxidant properties
of infusions prepared from leaves of sage. The effect of extraction time on the content of
phenolic compounds and the amount of reducing power (FRAP index) infusions was
evaluated. It was found that the value of the quality determinants increased with duration of
the extraction process.
The paper by Salerno-Kochan presents current issues related to ensuring the safety of non-
food products on the Polish and European market. An attention is paid to the type of products
which are the most common source of security threats and the nature of these threats.
The search for answers to the question on the role of the quality of the garment in the
decision-making process of purchasing clothing for young consumers is the subject of
research by Majkrzak and Salerno-Kochan. The study found that purchasing decisions were
closely linked with to the comfort of shopping, that is - easiness of finding clothes in proper
style and purity of the sale area. These decisions are not strongly linked to advertising
campaigns conducted by clothing companies and do not necessarily stem from a desire to
follow fashion trends.
The subject of the paper by Bielak et al. is the protection of leathers against the damaging
effects of microorganisms. The microbiological resistance of leather samples was was tested
by introduction of cassia oil. It was proved that the protective effect of the leather depended on
the type of microorganism used and the concentration of the additive oil. The usefulness of
cinnamon oil additive was confirmed for the fungi tested.
In the next article Banasiewicz et al. discuss the results of the survey on awareness and
consumer preferences in the use of nutritional supplements improving the condition of hair,
skin and nails. It was found that consumers often applied such supplements without consulting
their doctor. Moreover, it was noted that consumers did not realize that supplements could
serve only to supplement the normal diet and should not be treated as the source of all
essential vitamins.
The two last papers relate to factors affecting the quality of household chemicals. In the
first one Zieba et al. discuss the results of the assessment of the quality of cleaning facial gels
made with the addition of modern amphoteric surfactants prepared according to their own recipes. It was demonstrated that the addition of betaine and sulphobetaine improved the
physico-chemical properties and performance of these formulations.
In the last work Wasilewski et al discuss the factors affecting the quality of fabric
softeners. The authors present the results of research on the effect of the addition derivatives
of silicone on the functional properties of fabric softeners prepared according to their own
recipes. It was found that the partial replacement of the classical silicone surfactant derivative
even at the concentration of 0.1% resulted in improving the ability of the fabric to re-wetting.
49th ssue of the quarterly is closed with the regular column „TPJ Announcements”.One
can find there information on the cyclical international conference in commodity science
„Current Trends in Commodity Science” which will take place in Dolsk, June 2017.


I wish you a nice reading.


PJCS Editor
Prof. dr hab. inż. Ryszard Zieliński

 

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