Secondary metabolites, structure diagram: Trivial name – Parasiticol

Date: 26 November 2013

Secondary metabolites, structure diagram: Trivial name – Parasiticol

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Notes:

Species: A. (species not defined)Systematic name: 2H-Furo(3′,2′:4,5)furo(2,3-h)-1-benzopyran-2-one, 7a,10a-dihydro-4-(2-hydroxyethyl)-5-methoxy- 7a,10a-Dihydro-4-(2-hydroxyethyl)-5-methoxy-2H-furo(3′,2′:4,5)furo(2,3-h)-1-benzopyran-2-oneMolecular formulae: C16H14O6Molecular weight: 302.279Chemical abstracts number: 23315-33-5Selected references: Parasiticol: new metabolite from Aspergillus parasiticus. Stubblefield, Robert D.; Shotwell, Odette L.; Shannon, Gail M.; Weisleder, David; Rohwedder, William K. Northern Reg. Res. Lab., Peoria, IL, USA. Journal of Agricultural and Food Chemistry (1970), 18(3), 391-3. CODEN: JAFCAU ISSN: 0021-8561. Journal written in English. CAN 73:23623 AN 1970:423623 CAPLUS


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    Legend

  • A. versicolor by microscopy showing very long thin conidiophores.

    aspvers4

  • Pigmentation of Aspergillus versicolor colonies ranged from pale green to greenish-beige, pink-green, dark green and brown. Reverse is usually reddish. The growth rate is usually slow. Cultured on Sabouraud dextrose agar with chloramphenicol.

    aspvers3

  • A Colonies on MEA after one week; B, C conidial heads with tip of conidiophire, x920; D conidial head, x 2330; E conidial heads x920

    aspvers2

  • A Colonies on MEA + 20% sucrose after one week; B detail of colony showing columnar conidial heads x 44 ; C conidial heads x 920; D conidia x2330

    A

  • Scanning electron micrograph photo of conidia. Scale bar: 1 µm.

    piperis F

  • Conidia-forming head and culture plate

    A

  • Cultures are grown on malt extract agar for 5-7 days at 30°C.
    Light microscopy-1000x stained with lacto-phenol and cotton blue.

    niger

  • A Colonies on MEA +20% sucrose after one week; B ascomata x 40; C conidiophores x 920; D ascospores x2330; E ascoma x 230; F portion of ascoma with asci and ascospores, x 920.

    Aspergillus_chevalieri