Principles of Food Preservation
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Food Microbiology

Principles of Food Preservation

Unwanted microorganisms can cause food to be contaminated. The contamination is usually natural, but it can also be artificial. Natural contamination is when microorganisms attach to food during its growing stages. For example, Fruits are often contaminated by yeasts, which ferment the fruits' carbohydrates. Artificial contamination is when food is improperly handled or processed.