Physical prevention of aflatoxin contamination of maize by solar drying
1989
Chintana Chana | Pranee Hamelink | Chiradej Chamswarng (Kasetsart Univ., Bangkok (Thailand). Faculty of Agriculture. Dept. of Plant Pathology)
Three types of solar dryers were constructed by using inexpensive local materials and then used for drying the corn kernels. Aflatoxin and Aspergillus flavus were not detected from the dehusked corn dried as two stationary layers of corn ears on the solar dryer No.1. Moisture content of the kernels ranged 15-16 % within 9 days of drying. When dehusked corn ears and shelled corn kernels were dried on the solar dryer No.2 with two layers of corn ears and 4-cm-thick respectively, A. flavus and aflatoxin were only detected from latter. The best result was obtained from the dehusked and shelled corn dried on the solar dryer No.3 which the drying floor was elevated up to 0.3 m over the cement floor. Moisture content of corn kernel was reduced to 15 % within 2 sunny days. Whereas the A. flavus and aflatoxin were non-detectable.
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