Monascus purpureus

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Monascus purpureus
Red yeast rice.jpg
Monascus purpureus growing on white rice (red yeast rice)
Scientific classification
Kingdom: Fungi
Division: Ascomycota
Class: Eurotiomycetidae
Order: Eurotiales
Family: Elaphomycetaceae
Genus: Monascus
Species: M. purpureus
Binomial name
Monascus purpureus
(Went, 1895)

Monascus purpureus (syn. M. albidus, M. anka, M. araneosus, M. major, M. rubiginosus, and M. vini; simplified Chinese: ; traditional Chinese: 紅麴黴; pinyin: hóng qū méi, lit. "red yeast") is a species of mold that is purplish-red in color. It is also known by the names ang-khak rice mold, corn silage mold, maize silage mold, and rice kernel discoloration.


During growth, Monascus spp. break down starch substrate into several metabolites, including pigments produced as secondary metabolites. The structure of pigments depends on type of substrate and other specific factors during culture, such as pH, temperature, and moisture content.[1][2]


This fungus is most important because of its use, in the form of red yeast rice, in the production of certain fermented foods in China. However, discoveries of cholesterol-lowering statins produced by the mold has prompted research into its possible medical uses. It produces a number of statins. The naturally occurring lovastatins and analogs are called monacolins K, L, J, and also occur in their hydroxyl acid forms along with dehydroxymonacolin and compactin (mevastatin). The prescription drug lovastatin, identical to monacolin K, is the principal statin produced by M. purpureus. Only the open-ring (hydroxy acid) form is pharmacologically active.

Commercial species[edit]

The related fungi M. ruber and M. pilosus are also used in industrial applications.[3]

See also[edit]


Bibhu Prasad Panda, Saleem Javed, Mohd. Ali (2010) Optimization of fermentation parameters for higher lovastatin production in red mold rice through co-culture of Monascus purpureus and Monascus ruber. Food and Bioprocess Technology,Vol. 3, no.3, 373-378 [1]