Chapter 2 Microorganisms & Food Materials

Question 0

Which has unwettable spores? Penicillium, Aspergillus or Fusarium?

Answer 0

Penicillium and Aspergillus.

Question 1

Airborne bacteria are mainly ?

Answer 1

Gram-positive rods and cocci. Micrococci, corynebacteria, Bacillus, Streptomyces (链霉菌), actinomycetes.

Question 2

What kind of micros are mainly in the aquatic environment?

Answer 2

Psychrophilic and psychotropic species.

Question 3

How do the micro organisms in the water affect food safety and quality?

Answer 3

1. Shellfish, which filters the water, would be contaminated by the enteric organisms in it, and lead to food poisoning.
2. Adapted fungi would spoil crops.
3. The photosynthetic microorganisms, such as the Cyanobacteria, blue-green algae, would produce toxic metabolites, concentrated in shellfish, and then lead to food poisoning.