Wydanie 281(16) 2010

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https://oa.zut.edu.pl/handle/20.500.12539/752

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    PozycjaOpen Access
    Dwutlenek siarki w krajowych i importowanych napojach alkoholowych
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2010) Buczek, Anna; Jankowska, Jowita; Jarosz, Dorota; Kalata, Anna; Ociepa, Andrzej; Protasowicki, Mikołaj; Staszewska, Hanna; Katedra Toksykologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Toksykologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Toksykologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Toksykologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Toksykologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Toksykologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Toksykologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
    In period 2001–2006, the content of sulphur dioxide was determined in 90 assortments of wine and beer bought randomly at retail shops and wholesale outlets in Szczecin and West Pomeranian Province, Poland. Sulphur dioxide concentrations were analysed by titration after distillation from acidified samples. Sulphur dioxide was present in all the wines examined. The lowest concentrations, within the range of 1.2–18 mg SO2 · dm–3, were found in the domestic wines. Imported wines contained more sulphur dioxide, with concentrations varying from 4.4 to 217 mg SO2 · dm–3. The highest concentrations were detected in Rhine wines. Concentrations in beers ranged from 0.0 to 8 mg SO2 · dm–3. However in all the wines examined, sulphur dioxide concentrations were below the maximum permitted level, while in beers the detected values were below 10 mg · dm–3, which is the level of technological importance. Concluding the results, the wines and beers examined were safe for consumers’ health, considering sulphur dioxide content.
  • Miniatura
    PozycjaOpen Access
    Porównanie metod przygotowania estrów metylowych kwasów tłuszczowych wg AOAC oraz metodą bezpośrednią przy oznaczaniu składu kwasów tłuszczowych tkanki mięsnej ryb
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2010) Domiszewski, Zdzisław; Bienkiewicz, Grzegorz; Katedra Towaroznawstwa i Oceny Jakości, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Towaroznawstwa i Oceny Jakości, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
    Analysis of the composition of lipids is done by separating fatty acids (FA), most often through gas chromatography, after converting FA into their volatile derivatives: fatty acid methyl esters (FAME). The aim of the paper was to compare the results of analysis FA composition of three species of oily fish, both raw and subjected to heat treatment, by converting FA into FAME applying the AOAC method, and using the direct method. FAME were separated by gas chromatography-coupled mass spectrometry (GC-MS). It was shown that, in fish subjected to heat treatment, the percentages of EPA and DHA whose FAME were prepared via the direct method were 5-10% higher than in case of applying the AOAC method. As far as uncooked oily fish are concerned, the method of obtaining FAME had no relevance to the composition of fatty acids. The method of obtaining FAME can have a substantial impact on the percentages of individual acids or acid groups in fat, and, in turn, on results of evaluation its nutritional value.
  • Miniatura
    PozycjaOpen Access
    Wstępne badania nad zmianami warunków termicznych w krajobrazach podmiejskim i rolniczym
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2010) Michalska, Bożena; Mąkosza, Agnieszka; Nidzgorska-Lencewicz, Jadwiga; Zakład Meteorologii i Klimatologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Instytut Technologiczno-Przyrodniczy w Falentach, Zachodniopomorski Ośrodek Badawczy w Szczecinie; Zakład Meteorologii i Klimatologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
    The study includes the analysis of hourly results of automatic measurements of air temperature measured at the level of 200 cm above the ground according to the real state time within the period from 1 December 2008 to 30 November 2009. The measurements were carried out at the agrometeorological station in Lipki near Stargard Szczeciński (agricultural area) and at the agrometeorological station in Ostoja situated on Gumieniecka Plain (suburban area of Szczecin). To determine the stimulating character of thermal conditions, the frequency of temperature changes from hour to hour and from day to day were calculated using 4 intervals of temperature: <2oC – changes indifferent to the organism, 2.1–4.0oC – sensible, 4.1–6.0oC – considerable and >6oC – sharp changes, and in the case of air temperature amplitude – 3 intervals – from 0 to 8.0oC – slightly sensible stimuli, from 8.1oC to 12.0oC - strongly sensible stimuli and >12.0oC – sharp stimuli. In both of the analysed areas, suburban and agricultural, the largest frequency of changes, from day to day as well as from hour to hour, occurred in the temperature interval 0–2oC. Large changes of air temperature >6oC, sharply affecting the organism of a human being, occurred mainly from day to day, most frequently in January, with a slightly larger percentage contribution of such days in the suburban area. The temperature changes from hour to hour were most frequently observed during a year in the morning between 8 am and 9 am and in the afternoon and in the evening between 4 pm and 9 pm. The largest number of strongly stimulating days (amplitudes above 12oC) were recorded in the suburban area in summer and in the agricultural area in spring. The obtained results show that the characteristic feature of the suburban area was larger thermal contrast, expressed by the frequency of interdaily and interhourly changes, as compared to the agricultural area.
  • Miniatura
    PozycjaOpen Access
    Właściwości żywieniowe nasion szarłatu (Amarantus cruentus)
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2010) Biel, Wioletta; Jaskowska, Izabela; Zakład Żywienia Zwierząt i Żywności, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Żywienia Zwierząt i Żywności, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
    The nutritional value of the amaranthus seeds (Amaranthus cruentus L.) Aztek cv. was studied. Seeds contained about 17% protein, 8% fat, 3.5% ash and 6.5% crude fibre. The concentration of essential amino acids in crude protein were high. Crude protein had a high level of lysine – 4.72 g · 16g–1N. First limiting amino acid (CS) was isoleucine. All the estimated nutritional quality parameters based on amino acids composition showed that amaranthus protein had good nutritional quality, 93% – EAAI, 2.7 – predicted PER, 74 – predicted BV. Beneficial is also crude fat composition. Among amaranthus lipids the majority were unsaturated fatty acids (oleic – 25% and linoleic – 49%).
  • Miniatura
    PozycjaOpen Access
    Zbiorowiska roślinne na obszarze zreklutywowanego wyrobiska Szczecin-Żydowce
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2010) Kutyna, Ignacy; Czerwiński, Zbigniew; Młynkowiak, Elżbieta; Katedra Ochrony i Kształtowania Środowiska, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Ochrony i Kształtowania Środowiska, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Ochrony i Kształtowania Środowiska, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
    A post-extraction gravel pit was subjected to technical reclamation where by the pit was filled with fly ash and covered by a 37–150 cm thick soil layer. Subsequently, biological remediation was applied: the area was sowed with Lolium perenne, Festuca pratensis, Dactylis glomerata, Poa pratensis, Phleum pratense and Trifolium repens. Ten years after the remediation treatments, 47 phytosociological relevès were taken. Two associations were identified: the Artemisio-Tanacetum vulgaris and the Calamagrostietum epigeji. In addition, the area was found to support the Arrhenatheretum elatioris dactylidetosum glomeratae subassociation and a community with Elymus repens. The presence of a total of 133 taxa was recorded. The communities were similar in their species richness which varied from 79 to 81 taxa per community. The lowest species richness (56 taxa) was found in the community with Elymus repens. Of those species introduced during remediation, only Dactylis glomerata proved very frequent, but occurred at small patches. Less frequent were Poa pratensis and Festuca pratensis. The remaining species occurred only sporadically; their development during the succession was limited, or they were eliminated altogether, by other taxa developing spontaneously, e.g., Elymus repens.