Silver uptake byAgaricus bisporus from an artificially enriched substrate
- 1 September 1994
- journal article
- research article
- Published by Springer Nature in Zeitschrift für Lebensmittel-Untersuchung und Forschung
- Vol. 199 (3), 225-228
- https://doi.org/10.1007/bf01193450
Abstract
Champignons (Agaricus bisporus) wurden auf Kompost (Weizen- und Roggenstroh, Hühnerdung, Gips, Harnstoff und Torf) gezüchtet, welcher künstlich mit Silbernitrat in vier verschiedenen Mengen-0 (Kontrolle), 0,01, 0,1, 1,0 und 10,3 mg/kg-Trockenmasse angereichert wurde. Als Meßmethode wurde die Flammen AAS verwendet nach dem trockenen Veraschen der Proben bei 420 °C und Auflösen des Rückstandes in 1 M Salpetersäure.Die größte Silberkonzentration von 12±4–14±3 mg/kg Feuchtmasse und 120±30–150±36 mg/kg Trockenmasse wurde in den Fruchtkörpern festgestellt, die auf einem 10,3 mg Ag/kg Trockenmasse enthaltendem Substrat gewachsen sind. Die Silberkonzentration in allen Teilen des Fruchtkörpers hat positiv (r=0,72; pAgaricus bisporus was cultivated on compost (wheat and rye straw, hens' manure, gypsum, urea and peat) artificially fortified with silver nitrate added at four different concentrations (0.01, 0.1, 1.0 and 10.3 mg/kg) and 0 mg/kg (control) on a dry weight basis. The method of measurement was flame atomic absorption spectrophotometry after dry ashing of the samples at 420° C and dissolving the residue in 1M nitric acid. The highest concentration of silver, reaching between 120±30–150±36 mg/kg on a dry weight basis, was observed in fruit bodies grown on the most contaminated substrate containing 10.3 mg added Ag/kg dry weight. The silver concentration in caps/stalks/whole fruit bodies ofA. bisporus was positively correlated (r=0.72; PA. bisporus was inversely correlated (−0.44bisporus.Keywords
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