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National Repository of Grey Literature

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Phytochemical study of Helianthus annuus Dresler, Jiří ; Jahodář, Luděk (advisor) ; Karlíčková, Jana (referee) SOUHRN Cílem této práce bylo fytochemické hodnocení jazykovitých květů Helianthus annuus L. a zpracování úborových lůžek pro následnou analýzu téže rostliny. Výsledky lze shrnout takto: 1. Vodná fáze jazykovitých květů byla rozdělena na 6 frakcí, které čekají na další zpracování. 2. V jazykovitých květech nebyla prokázána přítomnost kyseliny ursolové, oleanolové, kumarové, betulinové a aukubinu. 3. Žádná ze zkoumaných frakcí dělení butanolové fáze nevykazovala významné antioxidační vlastnosti. 4. V jazykovitých květech byla pomocí NMR analýzy C13 a H1 prokázána ent-kaur-16- en-19-ovou kyselina. 5. V jazykovitých květech byla pomocí NMR analýzy C13 a H1 pravděpodobně prokázána přítomnost cholestan-5,22-dien-2-olu (3β,22E). Jeho přítomnost je však třeba ještě dodatečně potvrdit. 6. Byla zpracována úborová lůžka. Na další zpracování čekají petroletherová, chloroformová a vodná fáze a 31 kvalitativně odlišných frakcí dělení butanové fáze. Detailed record

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