Sixteen peanut samples collected from farmers, collectors, retailers and food processors in Banjarnegara District, Central Java were analyzed for their physical quality and A. flavus infection. On average, the moisture content of peanut kernels was 8.8%, while the damaged kernels (46.7%) and A. flavus infection (45.1%) were considerably high. Six, five and five samples were infected by non-toxic (-), slightly toxic (+), and toxic (++) A. flavus, respectively. Infection of A. flavus positively correlated with damaged kernel (r =0.71). This suggests that high damaged kernels and infection of A. flavus need to be decreased through proper handling and storage practices.
Aflatoxin is secondary metabolite produced by Aspergillus flavus and A. paraciticus that grow on the seed coat (testa) of groundnut. This toxin is a serious food safety issue throughout the world. The availability of resistant genotype to A. flavus infection and/or aflatoxin contamination urgently needed. The experiment found one genotype had aflatoxin contamination under the safe level (≤ 10 ppb), with <15% of seed number infected by A. flavus. Recently, the biggest peanut industry, where the main production is roasted-peanut (in shell) produced from fresh pods, grows and develops that variety.
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