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The experiment was conducted on samples of the dorsal muscle (musculus longissimus dorsi), taken from 60 carcasses of fattening pigs with average live weight of ca. 110 kg, characterized by meat of normal quality. A total of 120 samples, each weighing ca. 500 g, were collected. They were divided into two groups and frozen according to a cryogenic-ventilation method (60 samples) and a ventilation method...
Following the review concerning the nonenergetic functions of saccharides in plants [Kączkowski, 2002] this review is devoted to the presentation of polysaccharide synthesis breakdown and modification, using available chemical and biological methods, in order to alter the concomitant properties towards the practically required directions. For comparison to starch, as the main plant reserve polysaccharide,...
A multiplex PCR assay designed by Bansal [1996] was applied in a routine screening test of a meat-processing environment aimed at detection of Listeria monocytogenes and species of the genus Listeria. Listeria spp. strains yielded a single 938-bp product indicating presence of 16S rRNA conservative sequence typical of the genus, whereas L. monocytogenes strains yielded not only the 938-bp product...
The aim of the study was to estimate sorption degree of selected bile acids (lithocholic acid - LCA and cholic acid - CA) with 1 mmol/L and 6 mmol/L concentration as well as that of cholesterol by legumes. It was shown that bile acids sorption degree depended on the variety of seeds (the highest sorption ability had pea, while lentil showed the lowest one), grinding degree (bile acids were bound better...
Flours of four common wheat and one spelt genotypes were treated with thioredoxin-h (TR-h) in the presence of NADPH and NADP-thiore- doxin reductase to reduce intramolecular disulphide bonds in monomeric sulphur-rich prolamins. Effects on the breadmaking properties (determined by micro-baking) and gliadin's immunoreactivity (measured by Sandwich ELISA) were observed. Loaf volumes and estimated crumb...
Qualitative and quantitative analyses of phenolic acids fraction (free and released after acidic and basic hydrolysis) in leaves of three Silphium species (Silphium perfoliatum L., Silphium trifoliatum L., Silphium integrifolium Michx.) were performed in the presented paper. Analyses were carried out applying HPLC technique in reversed phase system using liquid Chromatograph of LaChrom-Merck type...
The aim of this study was to work out a recipe for sterilised soy puddings which, as an analogue of milk pudding, could compose a significant source of the soy protein in the diet. The investigations were performed to work out recipes for sterilised soy puddings containing similar contents of protein as those of based on milk or containing higher contents of soy protein up to 6.25 g in a 150 g portion...
The present work describes a simplified, and rapid HPLC method for measurement of phenolic acids in plant material. This procedure allows baseline resolution of major phenolic acids commonly found in plants p-hydroxybenzoic, caffeic, syringic, o-coumaric, m-coumaric, p-coumaric, gentisic, ferulic, sinapic, salicylic), it is specific, sensitive, and ensures good reproducibility. The precision and reproducibility...
Chicken eggs produced by nine commercial lines of laying hens: Lohmann Brown, Shaver 579, AK (experimental from IZ-OBD Zakrzewo), ISA White, Messa 445, Messa 443, Astra W-l, Astra W-2, and Astra N were used as experimental material. The layers produced eggs for experiments during the period from 63 to 66 week of age. The effect of bird origin on the basic chemical composition of eggs including certain...
The paper estimates the effect of high-pressure homogenization (20-140 MPa) on selected whole milk properties. High-pressure homogenization did not have a clear effect on the milk acidity. However, a slight increase in viscosity and a clear decrease in milk heat stability were observed along with an increase in the applied pressure. On the basis of a microscopic analysis and the measurement of the...
The aim of the study was to assess the consumption frequency of selected groups of products with different fat content among youth and students. The 434 people from Wielkopolska region were investigated. High consumption frequency of poultry as well as milk and cottage cheese with lowered fat content was positive nutritional behaviour of questionnaires. Girls considerably more often than boys paid...
The aim of the study was to determine, whether the new chemical preparation P3 Tsunami, product of Ecolab, shows bactericidal activity towards Hafnia alvei, Citrobacter freundii, Enterobacter cloacae. The P3 preparation has been suggested for reduction of microbiological contamination in technological water used for washing fruit and vegetables prior to freezing. The tested bacterial suspension (1...
The aim of the experiment was to study the influence of herb extract and acidifier on fattening results of 48 crossbred pigs, carcass quality and fatty acids content. The results of fattening performance and carcass quality showed the possibility of removal of the antibiotic promoters from pigs' diets. The chosen stimulants (herb extract and acidifier) use had no significant influence on fatty acids...
This paper presents the results of studies on the content of polychlorinated biphenyls (PCB's) in the fat of wild-boars shot in 10 selected areas of north-eastern Poland. All examined fat samples contained polychlorinated biphenyls. The mean level of PCB's in fat samples collected from wild-boars was 5.1 µg/kg. The highest mean levels of PCB's were noted in wild-boars from the Supraśl and Miłomłyn...
The aim of the studies was to determine whether the addition of carrot to feeding ration for cows affected an increase of vitamins and ß-carotene content in milk as well as whether it improved the composition of fatty acids in milk fat. The obtained results indicate that the applied addition increased not only the content of vitamin A but also the quantity of milk fatty acids: MUFA and PUFA. We should...
The aim of the work was to apply objective methods for texture evaluation of desserts of oxidised potato starch preparations using instrumental measurement of rheological properties and texture. Desserts were made from commercial starch preparations, i.e. "Skrobia budyniowa" and "Skrobia żelująca", with a different degree of carboxyl groups substitution (0.03% and 0.11%, respectively)...
Selected physical properties of small-seed broad bean varieties, determining their technological value, were studied. Seeds of small-seed broad bean varieties Gobik and Goral were used as the experimental material. Large-seed varieties Batom and Windsor Bialy and seeds of three edible pea varieties: Albatros, Karat, Miko, were used for comparison. The studies included the determination of: 1000 seeds...
Study samples were collected at six sites in the Węgierka Zwykła plum orchard at five different time points (from April to October 1999). Quantitative and qualitative composition of microflora inhabiting plum trees significantly depended on their occurrence in soil and air. Qualitative microbial analysis revealed the presence of 30 species of bacteria, 20 species of yeasts and 60 cultures of moulds...
The study included 142 pupils [(106 healthy (H) and 36 disabled (DS)] attending integrated classes in the primary schools in Cracow. The qualitative and quantitative analysis of nutrition data included: general evaluation of daily nutrition ration (DNR), the number and complexity of dishes consumed every day and the composition and nutritional value of the DNR. Mean intake of basic macro-nutrients...
Ocenę spożycia wody i napojów przeprowadzono wśród 206 starszych osób, losowo dobranych z trzech środowisk Warszawy i jej okolic: miejskiego, podmiejskiego i wiejskiego. Ocenę przeprowadzono metodą 3-dniowego bieżącego notowania. Przy ocenie brano pod uwagę wszystkie źródła wody (pożywienie stale, napoje, wodę dodawaną w trakcie gotowania). Za napoje uważano wszystkie plyny spożywane w szklance lub...
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