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Ellagitannins from Raspberry (Rubus idaeus L.) Fruit as Natural Inhibitors of Geotrichum candidum

Molecules (Basel, Switzerland), 2016-07, Vol.21 (7), p.908-908 [Peer Reviewed Journal]

Copyright MDPI AG 2016 ;EISSN: 1420-3049 ;DOI: 10.3390/molecules21070908(registeringDOI)

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  • Title:
    Ellagitannins from Raspberry (Rubus idaeus L.) Fruit as Natural Inhibitors of Geotrichum candidum
  • Author: Klewicka, Elzbieta ; Sójka, Michal ; Klewicki, Robert ; Kolodziejczyk, Krzysztof ; Lipinska, Lidia ; Nowak, Adriana
  • Subjects: Geotrichum candidum ; Rubus idaeus
  • Is Part Of: Molecules (Basel, Switzerland), 2016-07, Vol.21 (7), p.908-908
  • Description: The paper presents the chemical characteristics of ellagitannins isolated from raspberry (Rubus idaeus L.) fruit and their in vitro and in situ antifungal activity against Geotrichum candidum LOCK 0511. The study investigated a complex preparation containing various raspberry ellagitannins at a concentration of 86% w/w, as well as pure lambertianin C and sanguiin H-6. The ellagitannin preparation was obtained by extracting raspberry press cake and purifying the extract using Amberlite XAD resin, while individual compounds were isolated by means of preparative HPLC. The complex preparation was analyzed for the content of ellagitannins, anthocyanins, and flavan-3-ols using HPLC and LC-MS. The antifungal activity of the complex ellagitannin preparation and the isolated ellagitannins was determined for the strain Geotrichum candidum. The MIC and MFC values (10.0 mg/mL and 30.0 mg/mL, respectively) were found to be the same for lambertianin C, sanguiin H-6, and the complex ellagitannin preparation. The fungistatic activity of the studied ellagitannin preparation at a concentration of 10 mg/mL, as determined by the poisoned medium method, was 65.2% following 6 day incubation of Geotrichum candidum, with the linear growth rate of only 16.2 mm/day. The corresponding parameters for the control sample were 0% and 56 mm/day, respectively. The study demonstrated both in vitro and in situ antifungal activity of raspberry ellagitannins against Geotrichum candidum.
  • Publisher: Basel: MDPI AG
  • Language: English
  • Identifier: EISSN: 1420-3049
    DOI: 10.3390/molecules21070908(registeringDOI)
  • Source: Geneva Foundation Free Medical Journals at publisher websites
    AUTh Library subscriptions: ProQuest Central
    PubMed Central
    Alma/SFX Local Collection
    DOAJ Directory of Open Access Journals
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