Aflatoxicosos- contaminated food

Date: 26 November 2013

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Corn/Maize drying in Nepal-extensive damage to kernals

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Notes:

Mouldy maize (6-12ug/kg) was implicated for an outbreak of intoxication with aflatoxin in India in 200 villages in 1974. 397 patients were intoxicated and 106 deaths were reported. Symptoms included fever, nausea, vomiting, anorexia, hepatomegaly, ascites and ankle oedema. No infants were affected.

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Showing 10 posts of 2574 posts found.

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    Legend

  • Aspergillus versicolor

    A. versicolor by microscopy showing very long thin conidiophores.

    aspvers4

  • Aspergillus versicolor

    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

  • Aspergillus versicolor

    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

  • Aspergillus versicolor

    aspvers1

  • Aspergillus restrictus

    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

  • Aspergillus piperis

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

    piperis F

  • Aspergillus piperis

    Conidia

    piperis E

  • Aspergillus penicillioides

    Conidia-forming head and culture plate

    A

  • Aspergillus niger

    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

  • Aspergillus chevalieri

    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