For long-term storage grain should be dried to 14.5% or less.
Ambient-air drying systems should deliver 180 m3/hr/t in order to pass a drying front through grain in ten days. Undried grain, ahead of the drying front, can deteriorate if its moisture content remains too high for too long.
Germination loss has hitherto been the best indicator of biodeterioration. More serious is the possible formation of ochratoxin A (OTA), a carcinogen that may be produced above 18%mc by Penicillium verrucosum.
1 Kilwardby Mews, Kilwardby Street, Ashby-de-la-Zouch
Leicestershire LE65 2FR
Next: Guidelines to minimise risk of fusarium mycotoxins in cereals | Previous: Grain