P. Lebars et J. Lebars, ECOTOXINOGENESIS OF FUSARIUM-MONILIFORME - FUMONISIN B1 PRODUCTION AND STABILITY, Cryptogamie. Mycologie, 16(1), 1995, pp. 59-64
Sixty strains of F. moniliforme were isolated from 73 samples of corn
seeds harvested by hand. These strains were cultivated on hydrated (50
%) and sterilized corn, in optimal condition for fumonisin B1 (FB1) pr
oduction: 22-degrees-C, 28 days. Weekly analysis of FB1 was performed
by instrumentalized planar chromatography. 95% of strains produced mor
e than 50 mg FB1/g corn: 50% producing over 800 mg/g might be consider
ed as actually toxigenic in agronomic situation. Half-life times of FB
1 in corn was definitely longer than different thermal treatments (50
to 150-degrees-C). As a consequence, first, of the high frequency of F
. moniliforme and toxigenesis of strains, and, secondly, of FB1 stabil
ity, contamination of corn and its derivatives is a permanent threat,
confirmed by occasional acute toxicosis.