Lecture+13+Fungal+toxins+FST104

Lecture+13+Fungal+toxins+FST104 - MIDTERM Multiple choice...

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Multiple choice Bring scantron and #2 pencil Practice exam available on the Smartsite Thursday, Feb 9 5:30 – 7:30 Location: 180 Med Sci C Office hours Wednesday 1 - 2:30 Thursday 11 – 12:30 Exam Last name: A to Q Wellman 2 Last name: R to Z Wellman 6 MIDTERM FST104 February 8, 2012
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Fungal Toxins in Foods: Yeasts and Molds Yeasts and molds (including mushrooms) Yeasts live primarily as unicellular microbes Molds form highly branched colonies: multicellular p. 52 Yeasts and Molds Important in food fermentations Antibiotic production Biopesticides Edible (Some mushrooms can be poisonous) Enzyme production Spoilage microbes & Toxins (molds only)
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Mold Metabolism Soil microbes Produce extracellular digestive enzymes (proteases, lipases, glucosidases) : cause “rot” Produce secondary metabolites that are toxic Food spoiled by molds can (but always) contain Mycotoxins Mold Structure Mycelium A mat-like colony or microscopic branches Hypha – one branch of the mycelium Spores Large quantities are made Stress tolerant (less so than bacterial endospores)
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Lecture+13+Fungal+toxins+FST104 - MIDTERM Multiple choice...

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