Zależności pomiędzy wybranymi cechami jakościowymi nasion słonecznika a ich zasiedleniem przez grzyby
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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.
- Wydanie 309(29) 2014 
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