BARANOVÁ, M., MAĽA, P., BURDOVÁ, O.:
Application of the natural dye Monascus into processed cheese.
Critical demands of a consumer, who requires healthy products and foodstuffs for day-to-day life, is permanently increasing; this trend also manifests in the foodstuff industry, which has to take into consideration new knowledge and use red fermented rice instead of toxic nitrite salt in meat and salami products as well as in the production of other products as a healthy alternative.
Our results indicate that the microbial dye Monascus purpureus does not act undesirable on the technological raw material at the production of processed cheese. It was stated that addition of the microbial dye into processed cheese in the weight doses of 0.20 and 0.50 g/100 g of raw material favourably influences sensory characteristics, especially appearance and taste of products. Based upon results of sensory evaluation of cheese we recommend application of the microbial dye into processed cheese with addition of smoked cheese to 0.20 g of additive and into developing cheese "Mexicana" to 0.50 g/1 kg of additive.
Key words: processed cheese; Monascus purpureus; fermented rice
MARCINČÁK, S., POPELKA, P., NAGY, J., MÁTÉ, D., GIRETOVÁ, M., ŠEBESTOVÁ, D.:
Reduction of nitrite amounts in meat products by means of fermented rice.
Following good foreign experiences, nitrites were substituted with microbial colours produced by Monascus purpureus (fermented rice) in different percentage ratios. Poultry product (Záhradkarská klobása) was produced according to the recipe with fermented rice addition (0.5, 1.0, 2.0 g/kg) in combination with nitrites reduction. After thermal treatment, samples were taken and sensory, physical-chemical and microbiological examinations were done. Results were compared with those obtained in a standard way prepared poultry product. The results indicated the best combination of 0.5 g/kg of fermented rice with a half number of nitrites. They produced the best quality and stability of colour and sensory evaluation was positive as well.
Key words: Monascus purpureus; meat colour; nitrites; fermented rice
RAJZÁK, P., KOŠUTH, P., MAGIC, D., KOŠUTZKÝ, J., BREYL, I.:
Fish in the Slovak streams in the toxicological monitoring of State Veterinary Administration of SR.
Fish are a significant indicator of the surface water loading; according to their contamination with toxic substances it is possible to estimate the state of loading of a certain region or district. During 6 years of fish monitoring from the water streams in Slovakia, overall 434 samples of predatory and non-predatory fish musculature were delivered to the State veterinary institutions. Departments of foreign substances of the State veterinary institutions in Bratislava, Dolný Kubín and Košice carried out totally 5 343 chemical analyses of risk chemical elements: As, Cd, Cr, Cu, Hg, Pb and partially Ni. Of the polychlorinated biphenyls six PCB congeners were analysed (PCB28, PCB 52, PCB 101, PCB 138, PCB 153, and PCB 180).
The overlimited values of foreign substances were found in 181 samples (3,4%) of which 20 (1.1%) in the west Slovakian region, 10 (0.7%) in middle Slovakian region, and 151 (7%) in east Slovakian region.
Thus, the total regional distribution of overlimited findings was considerabkly different: in the east Slovakian, middle Slovakian and west Slovakian regions it was 83%, 12% and 5%, respectively.
The districts with much more apparent findings were: Michalovce, Trebišov, Bardejov, Košice-surrounding, Spišská Nová Ves, Poprad, Banská Bystrica, Sabinov and Liptovský Mikuláš.
Chemical elements: in their overlimited values were found in Hg (13.6% of analyses), Cd (3.45%), Pb (0.7%) and chromium (2.76%). Neither in one case copper and arsenic exceeded the limit.
Non-predatory fish were affected more frequently (4% of analyses) compared to predatory fish (2.9%).
In non-predatory fish Cd, Cr and Hg are in the foreground, in predatory fish Cd, Cr, Hg and Pb. The PCB congeners were in the foreground in non-predatory fish 138, 153 and 180, and in predatory fish 101, 138, 153, and 180.
Key words: fish; Slovak Republic; toxicological monitoring; overlimited findings of Hg, Pb, Cd, Zn, Cu, Cr, PCB
KOLODZIEYSKI, L., LIM, CH.-W., ŠEVČÍKOVÁ, Z.:
Infection with the bacterium Riemerella anatipestifer in ducklings.
Septikemia in ducklings caused by the bacterium Riemerella anatipestifer represents, due to its high morbidity, a significant disease unit from the economic and medicine point of view.
In our work we have aimed especially at the patho-anatomical and patho-histological finding of several ducklings raised on the private farm in the province Jeollabuk in South Korea. As well, a clinical finding, the methods of diagnostics and therapy of the disease are outlined.
Key words: Riemerella anatipestifer; ducklings; patho-anatomical and patho-histological finding
VALOCKÝ, I., SMITH, S. D., KRAJNIČÁKOVÁ, M., MOJŽIŠOVÁ, J., MANDELÍK, R.:
Early bovine embryo cloning.
The introduction of this research explains basic strategies for early mammalian embryo cloning.
The aim of this study is to present methodology for early bovine embryo cloning by nuclear transplantation of blastomeres from eight cell stage embryos deposited into enucleated oocytes.
Results achieved by other authors dealing with the same problem are confronted here as well.
Key words: bovine embryos; cloning, nuclear transplantation
HOLKO, I., NOVÁČKOVÁ, A., KANTÍKOVÁ, M., KMEŤ, V.:
Genotyping for susceptibility to Scrapie in the original Slovak breeds of sheep.
The results are only the first stage of the eradication programme Scrapie, which is employed in a similar form in most countries of EU and USA. Genotyping is well-founded only from the perspective view, i.e. it has to be carried out for a long time and on the whole area. Regarding the situation in Slovakia, in future, the examination of the genotype is planned in combination with monitoring of Scrapie by diagnostic methods - fast laboratory tests and immunohistochemical examination in agreement with the provision of the European Parliament and the Council No. 999. Such approach will help Slovakia to concept the specific approach in selection of resistant population of our breedings, because it will be able to observe susceptibility or resistance not only on the basis of statistical approaches, but purposefully in the individual breedings with incidence of the positivity for Scrapie. In this way, it will be possible to inhibit infection and especially to perform prevention much more effectively regarding the economical aspects of selection.
Key words: Scrapie; genotypization; PrP gene, alela VRQ; inhibition