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A feasibility study to investigate the possibility of producing whole cereal grain naturally contaminated with 7 insecticides (5 organophosphorus and 2 pyrethroids) is described. The whole cereal grain was required to be dried to a moisture content of below 3%, in order to avoid potential insecticide stability problems. Thus, several drying techniques were investigated. These techniques were freeze-drying, oven-drying at 40 C and 100 C and drying over silica gel, potassium hydroxide and phosphorus pentoxide. Only oven-drying at 100 C could successfully reduce kilogram quantities of whole grain to under 3% moisture in two days.

Additional information

Authors: NICHOLLS S M, Horticultural Research International, Warwick (GB);SUETT D L, Horticultural Research International, Warwick (GB)
Bibliographic Reference: EUR 16979 EN (1996) 27pp., FS
Availability: Available from the SMT Programme Office, European Commission, DG XII-C, 200 rue de la Loi, B-1049 Bruxelles (BE)
ISBN: ISBN 92-827-7191-1; ISSN
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