Biomaterial Database

[PR-Toxin-production of Penicillium roqueforti-Strains (author's transl)]. 1976

R Orth

One blue-type cheese starter and 11 isolates of P. roqueforti from different foodstuffs were tested for the production of PR-toxin. 3 strains were able to produce the toxin on rice at 15 degrees C and sometimes at 30 degrees C. The toxin quantities detected were 310-960 ppb. The starter culture didn't produce any PR-toxin. The investigations with P. roqueforti NRRL 849 showed a toxin-production in the temperature range of 15-30 degrees C, with an optimum at 15 degrees C, whereas 25 degrees C was the optimum for growth. PR-toxin was determined by thin-layer-chromatography and in doubtful cases by mass-spectrometry.

UI	MeSH Term	Description	Entries
D010407	Penicillium	A mitosporic Trichocomaceae fungal genus that develops fruiting organs resembling a broom. When identified, teleomorphs include EUPENICILLIUM and TALAROMYCES. Several species (but especially PENICILLIUM CHRYSOGENUM) are sources of the antibiotic penicillin.	Penicilliums
D003470	Culture Media	Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN.	Media, Culture
D013696	Temperature	The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.	Temperatures
D014118	Toxins, Biological	Specific, characterizable, poisonous chemicals, often PROTEINS, with specific biological properties, including immunogenicity, produced by microbes, higher plants (PLANTS, TOXIC), or ANIMALS.	Biological Toxins