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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Determination of cyanide content in different parts of elderberry plant
 Růžičková, Kristýna ; Štursa,, Václav (referee) ; Diviš, Pavel (advisor)
Elderberry is an abundant shrub or a small tree widely spread in the northern hemisphere. Its fruit and flowers have attracted increasing interest from consumers, pharmaceutical and food industry thanks to their high content of minerals and bioactive compounds. However, elderberry also contain potentially harmful cyanogenic glycosides which can release toxic hydrogen cyanide. The aim of this experiment was to analyse and compare total cyanide content in different plant parts of numerous interspecific hybrids, which were created at University of Maribor. Investigated plants comprised 4 subspecies of Sambucus nigra and 18 interspecific hybrids giving in total 46 elderberry genotypes. Cyanide content was determined by picrate paper method which is based on reaction of picric acid with hydrogen cyanide. The colour change of the picrate paper resulting from the reaction was further analysed using spectrophotometry. The highest cyanide levels were found in leaves reaching up to 1155.9 ± 44.8 CN- mg/kg, followed by inflorescences with maximum of 53.9 ± 3.8 CN- mg/kg, shoots and berries with highest levels of 20.3 ± 1.3 CN- mg/kg and 6.4 ± 0.0 CN- mg/kg, respectively.
Detailed record
Determination of cyanide content in different parts of elderberry plant
 Růžičková, Kristýna ; Štursa,, Václav (referee) ; Diviš, Pavel (advisor)
Elderberry is an abundant shrub or a small tree widely spread in the northern hemisphere. Its fruit and flowers have attracted increasing interest from consumers, pharmaceutical and food industry thanks to their high content of minerals and bioactive compounds. However, elderberry also contain potentially harmful cyanogenic glycosides which can release toxic hydrogen cyanide. The aim of this experiment was to analyse and compare total cyanide content in different plant parts of numerous interspecific hybrids, which were created at University of Maribor. Investigated plants comprised 4 subspecies of Sambucus nigra and 18 interspecific hybrids giving in total 46 elderberry genotypes. Cyanide content was determined by picrate paper method which is based on reaction of picric acid with hydrogen cyanide. The colour change of the picrate paper resulting from the reaction was further analysed using spectrophotometry. The highest cyanide levels were found in leaves reaching up to 1155.9 ± 44.8 CN- mg/kg, followed by inflorescences with maximum of 53.9 ± 3.8 CN- mg/kg, shoots and berries with highest levels of 20.3 ± 1.3 CN- mg/kg and 6.4 ± 0.0 CN- mg/kg, respectively.
Detailed record

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