1. Contamination of natural products and production lines
The micro-organisms found in natural products and foodstuffs are mostly microscopic fungi (yeasts and moulds) and bacteria. Some foodstuffs may also contain parasites such as protozoa, metazoa and viruses, which can cause foodborne illness.
1.1 Yeast
Yeasts and molds belong to the plant kingdom and are divided into the four classes of fungi (mycetes). The main difference between yeasts and molds is their cell structure. Both are eukaryotic cells, but yeasts are unicellular at least at one stage of their life cycle, whereas molds are filamentous microscopic fungi. The filaments (hyphae) make up the mycelium.
Yeasts are not a well-defined group of fungi. In fact, they are found in two classes of...
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Contamination of natural products and production lines
Microbial growth
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