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The aim of this study was to determine the fatty acid profile of cheese and tvorog milk fat obtained from the local producers from the region of north-eastern Poland. The material consisted of tvorog and cheese samples made from cow, goat and sheep’s milk. Methyl esters of fatty acids in milk fat was prepared with the use of IDF Standard 1999 and was performed by the gas chromatography method. Differences...
The grain of winter rye (Secale cereale L.) originated from a field experiment conducted in the years 2011–2013 at the Didactic-Experimental Centre of the University of Warmia and Mazury inTomaszkowo (53⁰72 N; 20⁰42 E) in Poland. The aim of the study was to determine the yield of winterrye and its components and the content of proteins, starch and selected mineral components (P, K,Ca, Mg, Cu, Fe,...
Celem pracy było porównanie zawartości ośmiu wielopierścieniowych węglowodorów aromatycznych w mięsie pstrągów tęczowych (Oncorhynchus mykiss), wędzonych metodą tradycyjną, z surowca świeżego i rozmrożonego, z ich zawartością w rynkowych rybach wędzonych różnymi metodami (w wędzarni z zewnętrzną wytwornicą dymu, tradycyjnie i przy użyciu preparatu dymu wędzarniczego). Oznaczenie WWA wykonano metodą...
The aim of the study was to determine the content of chlorinated hydrocarbon residues in fat of different assortment of rainbow trout (Oncorhynchus mykiss). The research material consisted of 108 fish from six different producers. Thirty-six fish were analysed as fresh, 36 fish as frozen after six months storage, and 36 fish as traditionally smoked. Chromatographic determination of γ-HCH, DDT, DDD,...
The aim of the study was to determine and compare the concentrations of chlorinated hydrocarbons residues (DDT, DDE, DDD, γ-HCH) in the milk fat of selected species of farm animals. The experiment was carried out on cow's, sheep's, goat's, and mare's milk samples originating from different parts of north-eastern Poland. The samples were prepared using Röse-Gottlieb's and Ludwicki's methods. The determination...
Results of an inexpensive and rapid evaluation of the cholesterol concentration in human milk using ATR-FTIR techniques are presented. The FTIR spectrum of pure cholesterol was characterized and quantitatively estimated in the region between 2800 and 3200 cm−1. 125 samples at different stages of lactation were analyzed. There were no differences between the cholesterol concentrations in the samples...
Celem badań było porównanie zawartości kadmu i ołowiu w mleku czterech gatunków zwierząt hodowlanych. Wybrane metale ciężkie oznaczono w 41 próbkach mleka: 14 krowiego, 8 koziego, 5 owczego, 14 klaczy. Analizy wykonano za pomocą spektrometrii absorpcji atomowej. Średnią zawartość kadmu oznaczono na poziomie: w mleku krowim – 0,0079 mg/kg, kozim – 0,0071 mg/kg, klaczy – 0,0066 mg/kg, owczym – 0,0050...
More and more research is done concerning nutritional programming. Human milk nutrients which are consumed by infants can influence their health in later life. High level of cholesterol in human milk paradoxically lowers the cholesterol concentration in blood in adults. During the course of human lactation the cholesterol concentration decreases from 31 mg/100cm3 (colostrum) to 16 mg/100 cm3 (mature...
Wprowadzenie. Polichlorowane bifenyle (PCBs) to grupa syntetycznych, aromatycznych związków chemicznych rozpowszechnionych w środowisku w wyniku uprzemysłowienia. Szerokie stosowanie tych związków w przeszłości spowodowało ich rozprzestrzenienie się we wszystkich elementach środowiska. Lipofilny charakter PCBs powoduje ich kumulację w organizmach żywych, co w organizmach ludzi może wywoływać szkodliwe...
Celem pracy było określenie profilu kwasów tłuszczowych w tłuszczu mleka krowiego pozyskiwanego z regionu Warmii i Mazur. Materiał badany stanowiły próbki mleka krowiego zebrane z 10. małych indywidualnych gospodarstw w okresie letnim. Krowy były żywione pastwiskowo. Tłuszcz wydzielano metodą Rösego-Gottlieba, estry metylowe przygotowano metodą IDF Standard 1999 i poddano analizie na chromatografie...
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