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Appl Environ Microbiol. 1986 February; 51(2): 381-384

Fusarin C production by North American isolates of Fusarium moniliforme.

ABSTRACT

A liquid culture medium was developed to screen North American isolates of Fusarium moniliforme Sheldon and Fusarium subglutinans (Wollenw. and Reink.) Nelson, Toussoun, and Marasas for their ability to produce fusarin C. Parameters which were important for the optimal biosynthesis of fusarin C included pH (3.0 to 4.0), aeration, and sugar concentration (30 to 40%). Of seven sugars tested, sucrose and glucose were the best carbohydrate sources for mycotoxin production, resulting in levels of fusarin C of greater than 60 ppm (greater than 60 micrograms/g) in liquid culture (28 degrees C; 7 days). A time-course study of fusarin C production was done over a 21-day period, during which time pH values, glucose concentrations, nitrogen levels, and fungal biomass were determined. Of the two Fusarium spp. studied, 13 of 16 isolates of F. moniliforme produced fusarin C in liquid medium (14 of 16 in corn), while none of the 15 isolates of F. subglutinans studied was found to produce the compound. Levels of fusarin C produced by Fusarium sp. isolates growing on corn ranged from 18.7 to 332.0 micrograms/g.