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  • Title: Simultaneous selenium and sulfur speciation analysis in cultivated Pleurotus pulmonarius mushroom.
    Author: Milovanovic I, Lajin B, Braeuer S, Steiner O, Lisa F, Goessler W.
    Journal: Food Chem; 2019 May 01; 279():231-236. PubMed ID: 30611485.
    Abstract:
    Selenium (Se) and sulfur (S) speciation analysis in edible and medicinal Se enriched P. pulmonarius extracts was performed. Mycelium, colonized substrate, and fruiting bodies at different harvesting times were analyzed using ion-pairing reversed-phase chromatography coupled to an ICPMS/MS detector. Extraction efficiencies in enzymatically digested and aqueous extracts were between 45.3 and 109% for Se, depending on the sample type. Selenomethionine (Se-Met) was found to be the major Se-compound, together with a number of unknown Se-species. Cystine (Cys2), methionine (Met), and sulfate were also detected and quantified in all samples. Most of the Se-Met (84.0%) and Met (75.8%) were found to be in free form in the fruiting body, in contrast with the mycelium where 53.4% of Se-Met and 80.5% of Met is incorporated into proteins.
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