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Item type:Pozycja, Activity of compounds of natural origin against Alicyclobacillus acidoterrestris, a common fruit juices contaminant(Lodz University of Technology Press, 2015) Tyfa, Agnieszka; Kunicka-Styczyńska, Alina; Dąbrowska, JustynaFruit product industry struggles with emerging problem of microbial contamination with Alicyclobacillus acidoterrestris. This acidothermophilic, soil-borne and sporeforming bacterium posses ability to survive commercial pasteurization and thus may cause fruit juices spoilage. Even modern technologies are not effective enough to eliminate A. acidoterrestris from the industrial environments. The green consumer attitude and safety standards suggest adaptation of natural and safe solutions. This paper summarizes the bioactivity of compounds of natural origin which could serve as anti-alicyclobacilli preservation agents maintaining stability of fruit juices.Item type:Pozycja, Impact of rearing system of Rosa breed laying hens on occurrence and antibiotic resistance of Salmonella spp. isolated from egg shell surface(Lodz University of Technology Press, 2015) Galbas, Mariola; Selwet, Marek; Koczorowski, Michał; Porzucek, FilipSalmonelloses are among the most common animal-borne infections. The most frequent causes of their occurrence are contaminated chicken eggs. For this reason, the control of bacteria from the Salmonella genus living in the cloaca of laying hens can contribute to the reduction of spreading levels of infections with these bacteria. The most popular methods of rearing laying hens in small agricultural farms comprise run and cage keeping. The aim of the performed studies was to determine the impact of rearing and nutritional systems on the occurrence of egg infections with Salmonella spp. bacteria. Detection by PCR method corroborated presence of bacteria from the Salmonella genus on eggs surface from hens kept in litter system. Latex serotyping test confirmed the presence of Salmonella Enteritidis. Salmonella spp. was not detected on eggs surface from hens kept in cage system. Salmonella spp. isolates from the eggs surface of hens reared on litter were characterized by drug resistance to tetracycline. Addition of EM probiotic failed to show reduction in incidence of Salmonella spp. infection.Item type:Pozycja, Distribution of nitrogen compounds in important sections of sugar beets(Lodz University of Technology Press, 2016) Bąk, Paulina; Antczak-Chrobot, Aneta; Wojtczak, MaciejIn literature the beet is often described as consisting of the following technologically important sections: crown, root and tail. The aim of the study was to determine the distribution of nitrogen compounds in the technologically important beet sections of untopped sugar beets with particular emphasis on the content of nitrate and nitrite. The Finezja sugar beet variety had been collected from the clamps in one of the Polish sugar factories in October during 2013/2014 campaign. The untopped sugar beets were divided into three sections: crown, root and tail. The content of total amount of nitrogen, proteinaceous nitrogen, α-amino nitrogen, the sum of the amide and ammonia nitrogen, nitrates and nitrite in these sections were determined. Although the crown of the sugar beet represented only 14.7% of it mass, this section contained on average 30% of the total quantity of α-amino acids as well as amide and ammonia nitrogen. This section contained approximately 77% of the total quantity of nitrate and 88% of nitrite. Untopped sugar beets would introduce much higher amounts of nitrogen compounds in comparison to topped raw material.Item type:Pozycja, Nickel – the use and influence on living organisms(Lodz University of Technology Press, 2016) Mielcarz, Lidia; Smolińska, BeataRegardless the form, nickel is an element commonly used. Its numerous advantages make it irreplaceable in many industries. The widespread use of this element in different branches leads to increasing nickel penetration to the environment and its pollution. Furthermore, the contamination of environment results in affecting the living organisms, including both plants that are directly exposed to Ni in soil, water or air, and humans whose exposition to Ni is direct (e.g. contaminated air) and/or indirect (e.g. food with high amount of Ni). Therefore, the exposition of living organisms to Ni may constitute a threat. This paper constitutes the short review of nickel as an environmental contaminant with characterization of its main sources in the environment. The nickel nanoparticles have been also studied. The influence of Ni and its nanoparticles on living organisms with emphasizing its allergenicity of human has been described.Item type:Pozycja, Accumulation of metal ions in selected plants from Brassicaceae and Lamiaceae families(Lodz University of Technology Press, 2016) Szczodrowska, Agnieszka; Kulbat, Kamila; Smolińska, Beata; Leszczyńska, JoannaThis paper examines the accumulation of metal ions from soil in selected edible plants belonging to the Brassicaceae and Lamiaceae families. The effect of metal ions on factors, such as growth and morphology are also investigated. The results indicate that the addition of selected metal ions to the soil significantly increases the concentration of metal ions in the plants. The application of zinc ions significantly enhances Zn uptake in Ocimum basilicum and Mentha piperita (Lamiaceae family). Nickel ions significantly increase Ni accumulation in Lepidium sativum (Brassiaceae family). The research shows that nickel, zinc and copper accumulate in leaves at different concentrations depending on the plant species.