Resistance to aflatoxin contamination in corn as influenced by relative humidity and kernel germination.
Guo, B.Z., Russin, J.S., Brown, R.L., Cleveland, T.E. and Widstrom, N.W.
Journal of Food Protection 59 : 276-281.
1996
บทคัดย่อ
Kernels of two corn populations, GT-MAS:gk which is resistant to AFB1 production by Aspergillus flavus and Pioneer hybrid which is susceptible, were tested for aflatoxin following incubation under different relative humidities (RH). High aflatoxin levels were not detected in either genotype at RH 91%. Aflatoxin levels in GT-MAS:gk averaged about 98% less than those in susceptible Pioneer 3154. When kernels of both genotypes were preincubated for 3 days at 100% RH prior to inoculation with A. flavus, germination percentages increased to very high levels compared to those of kernels that were not preincubated. In preincubated kernels aflatoxin levels remained consistently low in GT-MAS:gk but decreased markedly (61%) in Pioneer 3154. Result suggest that an inhibitor of aflatoxin biosynthesis may be induced during kernel germination. Possible mechanisms for embryo effects on resistance to aflatoxin accumulation are discussed.