Wydanie 309(29) 2014

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https://oa.zut.edu.pl/handle/20.500.12539/736

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Przeglądaj Wydanie 309(29) 2014 wg Autor "Janda, Katarzyna"

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  • Miniatura
    PozycjaOpen Access
    Badania składu ilościowego i jakościowego grzybów zasiedlających nasiona rzepaku
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2014) Janda, Katarzyna; Markowska-Szczupak, Agata; Zakład Biochemii i Żywienia Człowieka, Pomorski Uniwersytet Medyczny w Szczecinie; Zakład Biotechnologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
    The aim of study was estimated of qualitative and quantitative composition of fungi in rapeseed on RBA, YpSs, DG18 medium at 25, 37, 45ºC. Material was 18 samples of rapeseed. The most amount of fungi were isolated on RBA at 25ºC (28), next xerophilic species (23) on DG 18 at 25oC and mesophilic (19) and thermophilic species (8) on YpSs medium at 37º and 45ºC, respectively. The predominant species were Penicillium chrysogenum and Eurotium herbariorum. From rapeseed 162 strains belonging to 41 species were isolated. This study enriched rapeseed mycobiota about 25 species and genus of fungi in comparison to date from available literature.
  • Miniatura
    PozycjaOpen Access
    Zależności pomiędzy wybranymi cechami jakościowymi nasion słonecznika a ich zasiedleniem przez grzyby
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2014) Janda, Katarzyna; Markowska-Szczupak, Agata; Zakład Biochemii i Żywienia Człowieka, Pomorski Uniwersytet Medyczny w Szczecinie; Zakład Biotechnologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
    There is lack of work in which correlation between chosen qualitative features of sunflower seeds and settled of the fungi colonies have been investigated. The study was aimed to evaluate selective qualitative characteristics of sunflower seeds, to determine the quantitative analysis of fungi including different media and temperature incubation and to specify the correlation between sunflower seed's qualitative characteristics and the number of colonies of fungi that inhabit them. Investigated material of sunflower seeds was 20 samples of seeds. The characteristics of seeds included calculation of thousand seed weights, volumetric weight, amount, pH of seeds, seeds moisture content, seeds water activity (aw), fat content, fat acidity, critical moisture of seeds and hull content. Number of fungi contaminating sunflower seeds were investigated with using different culture media (RBA, DG18, YpSs) and incubation temperatures (25ºC, 37ºC and 45ºC). The largest number of fungi colonies was isolated when DG18 medium was used at 25ºC. The negative correlations between volumetric weight and amount of fungi has been revealed. The negative statistically significant correlation between pH of seeds and amount of fungi isolated on YpSs at 37ºC was found. The positive, statistically significant correlations between amount of fungi colonies isolated on YpSs at, respectively 37ºC and 45ºC and water activity and humidity and fat acidity, has been revealed. Received correlations proved, that contamination seeds by fungi may cause decrease of volumetric weight and pH of seeds. This results demonstrated, that large colonies of fungi is directly related with count of impurities.