spoilages

1
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Bacillus subtilis
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Bacillus subtilis
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Bacillus subtilis
Bacillus subtilis, known also as the hay
bacillus or grass bacillus, is a Gram-positive
,catalase-positive (rod) bacterium commonly found
in soil.
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B. subtilis
B. subtilis is responsible for causing ropiness
a sticky, stringy consistency caused by bacterial
production of long-chain polysaccharides  in
spoiled bread dough.
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YEASTS

• LARGER THAN BACTERIA
• OVAL, ELONGATE CELLS
• USUALLY PRODUCE GAS
• GENERALLY HEAT LABILE
• ASCOSPORES HEAT RESISTANT

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MOLDS
GENERALLY AEROBIC VARIED HEAT RESISTANCE HEAT
RESISTANT MOLDS SALT/SUGAR TOLERANCE GENERALLY
HIGHER THAN BACTERIA MYCOTOXINS
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