title: Occurrence of mycotoxins in cereals and animal feedstuffs in Natal, South Africa.
abstract: During the period 1982-1983, just under 800 samples of agricultural commodities, comprising cereals, compound feeds, hay, and silage, were examined for molds and mycotoxins. Aflatoxin B1 showed the highest incidence rate; it occurred in over 27% of all samples analyzed, the highest levels being found in peanut meal at 1500 ppb. Other mycotoxins detected were patulin and a number of trichothecene toxins at incidence rates in all commodities of 5.6 and 3.1%, respectively. The commodities at highest risk were oil seeds, excluding soya bean; the latter was found to be fairly free from contamination with mycotoxins. The most prevalent fungi were Aspergillus flavus and parasiticus, which were found in over 22% of all samples, whereas Penicillium spp. showed the lowest incidence of genera, specifically identified in 8.3% of all samples examined. This latter finding explains in part the low incidence of Penicillium mycotoxins.
mesh_terms: D016604:Aflatoxin B1; D000348:Aflatoxins / Q000032:analysis; D000821:Animal Feed / Q000032:analysis*; D001231:Aspergillus flavus / Q000032:analysis; D002855:Chromatography, Thin Layer; D002523:Edible Grain / Q000032:analysis*; D005516:Food Microbiology; D009183:Mycotoxins / Q000032:analysis*; D010407:Penicillium / Q000032:analysis; D013019:South Africa
chemical_list: D000348:Aflatoxins; D009183:Mycotoxins; D016604:Aflatoxin B1