Geotrichum is a genus of fungi found worldwide in soil, water, air, and sewage, as well as in plants, cereals, and dairy products; it is also commonly found in normal human flora and is isolated from sputum and feces. Geotrichum causes diseases known as geotrichosis. This rare disease can cause lesions of the skin, bronchi, mouth, lung, and intestine. Geotrichum candidum is a Fungi or mold that can act as a plant pathogen causing sour rot on peach, nectarine, tomato and carrot. One of the leading experts in how this mold affects cheeses during aging is Sister Noella Marcellino of the Abbey of Regina Laudis.
Geotrichum is usually found in soil, water, air, sewage and it can be found in plants, paper textiles, cereals, and dairy products. It is classed in the yeast group and while it has varied species, there are certain groups that stand out and as such are considered as the most common species. This mold powder will produce a white to cream color surface and it plays a significant role in the ripening process for surface ripened cheese of the soft ripened or washed rind types. These include; geotrichum candidum, gettrichum clavatum, and geotrichum fici that has a distinct smell that is similar to that of pineapples among other species. It is also widely used in the production of many dairy products including many natural rind cheeses such as Camembert and other bloomy rind cheese, Saint-Nectaire, Tomme de Savoie, and many other cheeses made in those styles.
A common contaminant of grains, fruits, dairy products, paper, textiles, soil and water, and often present as part of the normal human flora. It greatly influences the appearance, structure and flavor of Brie and Camembert, along with a variety of goat cheeses. The species Geotrichum candidum can cause a secondary infection (geotrichosis) in association with tuberculosis. It is also found in the Nordic dairy product viili and is responsible for the velvety surface of the product.
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