[The influence of atmospheric gases on growth and toxin production of sterigmatocystin-and patulin-producing molds (author's transl)].
The influence of one-and two-sided regulated atmospheres with lower 02-and increased CO2-concentrations in comparison with air was studied on the growth and toxin-production of 4 different mycotoxin-producing molds (A. versicolor, P. expansum, P. urticae, B. nivea). Low O2-values in the atmosphere (2-0.5%) had scarely an influence on the development and toxinproduction in different nutrient media after 14 d at 25 degrees C. Only higher CO2-and lower O2-concentrations than that of the air (e.g. 40% CO2, 6% O2) reduced the sterigmatocystin-and patulin-production in nearly all cultures, whereas growth was only retarded insignificantly. Atmospheres with 90% CO2 and 10% air as well nitrogen atmospheres with 10% CO2 inhibited remarkably the growth of molds and prevented the toxin-production of nearly all strains. In pure N2-atmospheres most of the A. versicolor strains exhibited growth with toxic mycelia whereas only minimum growth of the patulin-producing species without any patulin synthesis had been observed.
D001230:Aspergillus / Q000187:drug effects / Q000254:growth & development; D002245:Carbon Dioxide / Q000494:pharmacology; D003470:Culture Media; D004780:Environment, Controlled; D003904:Mitosporic Fungi / Q000254:growth & development*; D009183:Mycotoxins / Q000096:biosynthesis*; D010100:Oxygen / Q000494:pharmacology; D010313:Partial Pressure; D010365:Patulin / Q000378:metabolism*; D010407:Penicillium / Q000187:drug effects / Q000254:growth & development; D011714:Pyrans / Q000378:metabolism*; D013241:Sterigmatocystin / Q000378:metabolism*; D014966:Xanthenes / Q000378:metabolism*
D003470:Culture Media; D009183:Mycotoxins; D011714:Pyrans; D014966:Xanthenes; D013241:Sterigmatocystin; D002245:Carbon Dioxide; D010365:Patulin; D010100:Oxygen
Wachstum und Toxinbildung von Patulin-und Sterigmatocystin-bildenden Schimmelpilzen unter kontrollierter Atmosphäre