Microbiology
Black kraut is caused by

the plant enzymes
None of these
the micro-organisms
the combined actions of plant enzymes and micro-organisms

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Microbiology
Which of the following is true to prevent botulism from smoked fish?

Fish should be immediately frozen after packaging and kept frozen
Good sanitation should be maintained throughout production and handling
All of these
The fish should be heated at its coolest part to at least 82°C for 30 min during or after smoking

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