Penicillium is a fungus, and is the most abundant mold source in soil. There are more than 150 species of penicillium.
Penicillium that is more than two-weeks old is bluish in color.
Penicillium is a cryophilic fungi, which means it likes the cold, growing best at 34 degrees (the temperature of a refrigerator). It is xerophilic, which means it can obtain moisture from the air if humidity is at 60% or higher.
Penicillium looks a bit like a Dali-rendering of a tree. Click the following links for photos and drawings:
Penicillium notatum and penicillium chrysogenum are used to make penicillin. In fact, it is sometimes referred to as "medicinal mold".
Other varieties, such as penicillium roqueforti are used to ripen cheese, although it can also cause mold in grain crops.
Penicillium fumiculosum is used in antibotics.
Penicillium citrinum is used in laboratories.
Penicillium simplicissium produces an enzyme that helps crops.
Penicillium expansum causes soft rot of apples.
Penicillium viridicatum, penicillium citreonigrum , penicillium citrinum, Penicillium crustosum, penicillium islandicum, and penicillium verrucosum can cause illness when eaten.
Unchecked penicillium growth can develop mycotoxins.
Some people are allergic to penicillium.
Temperature: Prefers the cold, refrigerators
Food: Fruit, bread
Water: Can take water vapor from the air. Will not grow if the relative humidity is under 60%.
Potential Allergen: Yes
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