Botany Science Fair Project
On what fruits will penicillium mold grow?

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1. Will Penicillium digitatum mold grow on non-citrus fruits?
2. Will Penicillium roqueforti mold grow on any fruit at all?
Subject: Botany
Grade level: Elementary School - Grades 4-6
Project Type: Experimental
Cost: Low
Awards: None
Affiliation: Canada Wide Virtual Science Fair

Penicillium roqueforti is a common saprotrophic fungus, that is widespread in nature and can be isolated from soil, decaying organic substances and plant parts. The major industrial use of this fungus is the production of blue cheeses, flavoring agents, antifungals, polysaccharides, proteases and other enzymes.

The fungus has been a constituent of Roquefort, Stilton and other blue cheeses eaten by humans since about 50 AD; blue cheese is mentioned in literature as far back as AD 79, when Pliny the Elder remarked upon its rich flavor. There is however considerable evidence to indicate that most strains are capable of producing harmful secondary metabolites (alkaloids and other mycotoxins) under certain growth conditions (Peabody, 1985; Sharpell, 1985).

The chief industrial use of the fungus P. roqueforti is the production of Roquefort cheese. Strains of the microorganism are also used to produce compounds that can be employed as antibiotics, flavors and fragrances (Sharpell, 1985), uses not regulated under the Toxic Substance Control Act (TSCA). Its texture is chitinous.

The organism can also be used for the production of proteases and speciality chemicals, such as methyl ketones (Larroche et al, 1989) including 2-heptanone (Larroche and Gros, 1989; Jong and Gantt, 1987). Other strains of Penicillium species are also useful in biodeterioration (Peberdy, 1985) which may be used in applications subject to TSCA reporting.

For More Information: Mold K-12 Experiments & Background Information

Source: Wikipedia (All text is available under the terms of the Creative Commons Attribution-ShareAlike License)

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