Aflatoxin Control <br />Post –Harvest<br />Ernest Moturi Ogwora- NCPB<br />13/01/2011<br />1<br />Alatoxin Control<br />
Preparing for Storage<br />Harvest early at physiological maturity (grain moisture content will be around 26%)<br />Stook ...
Good Storage<br />The grain must be properly dried (<13.5% M.C).<br />Use tarpaulins or clean paved surface for drying the...
Storage<br />The storage is very important at the farm, trader, transporter, processor or consumer level.<br />Common prac...
Good Storage<br />Grading<br />Orderly stacks - that depict uniformity<br />Clear pathways <br />Record keeping<br />Regul...
MYTHS ABOUT AFLATOXIN<br />Aflatoxin is just politics, we have eaten our maize and nothing has happened to us. <br />Dryin...
Controlling Aflatoxin<br />Cooking controls aflatoxin<br />Cooking thoroughly will not eradicate aflatoxin<br />Aflatoxin ...
Source of Aflatoxin Maize<br />Aflatoxin comes only with grain from outside – UG or TZ and now from Eastern.<br />The sour...
Feeding Animals <br />It is okay to feed suspect food to domestic animals – rather than waste it.<br />It will harm the an...
Disposal of Contaminated Maize<br />Any maize with aflatoxin must be disposed immediately through burning.<br />13/01/2011...
Best Aflatoxin Control<br />Dry the maize immediately upon harvesting<br />Maintain a high standard of hygiene when handli...
Thank You<br />Contributions?<br />13/01/2011<br />Alatoxin Control<br />12<br />
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Post-Harvest control of Aflatoxin, Ernest Moturi Ogwora, NCPB

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Presentation from the Aflacontrol Conference on Aflatoxins, Food Safety and Food Security, Nairobi, Kenya January 2011

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Post-Harvest control of Aflatoxin, Ernest Moturi Ogwora, NCPB

  1. 1. Aflatoxin Control <br />Post –Harvest<br />Ernest Moturi Ogwora- NCPB<br />13/01/2011<br />1<br />Alatoxin Control<br />
  2. 2. Preparing for Storage<br />Harvest early at physiological maturity (grain moisture content will be around 26%)<br />Stook maize for two or more weeks to dry on the field (grain moisture will reduce to 18%). <br />De husk and remove from field for shelling, conditioning, further drying to 13.5% m.c. and storage<br />Ensure crop is not left on the ground and bare soil.<br />Fungal spores are found on the soil<br />13/01/2011<br />2<br />Alatoxin Control<br />
  3. 3. Good Storage<br />The grain must be properly dried (<13.5% M.C).<br />Use tarpaulins or clean paved surface for drying the grain.<br />Clean and sieve to remove broken, foreign matter, diseased and rotten grains.<br />Dust for pests (apply the pesticide on cool grains).<br />Weigh and bag in natural fibre bags for storage.<br />Grain that is broken or with foreign matter attracts moisture and pests leading to spoilage and or fungal growth<br />13/01/2011<br />3<br />Alatoxin Control<br />
  4. 4. Storage<br />The storage is very important at the farm, trader, transporter, processor or consumer level.<br />Common practice farmers store grain in residential houses<br />Grains stored in pp or plastic bags common<br />Commingle new and old stocks or treated and untreated stocks.<br />13/01/2011<br />4<br />Alatoxin Control<br />
  5. 5. Good Storage<br />Grading<br />Orderly stacks - that depict uniformity<br />Clear pathways <br />Record keeping<br />Regular sampling <br />Timely pest control interventions<br />Clear priority stock disposal<br />13/01/2011<br />Alatoxin Control<br />5<br />
  6. 6. MYTHS ABOUT AFLATOXIN<br />Aflatoxin is just politics, we have eaten our maize and nothing has happened to us. <br />Drying contaminated maize will control aflatoxin<br />Drying of contaminated grain well will not reverse the effect of the poison.<br />It may inhibit further growth of the mould-the poison produced remains<br />13/01/2011<br />6<br />Alatoxin Control<br />
  7. 7. Controlling Aflatoxin<br />Cooking controls aflatoxin<br />Cooking thoroughly will not eradicate aflatoxin<br />Aflatoxin is not pathogen. It is a poison<br />Blending will control aflatoxin<br />Mixing - blending of contaminated grain with good grain is not advisable.<br />It only dilutes<br />13/01/2011<br />7<br />Alatoxin Control<br />
  8. 8. Source of Aflatoxin Maize<br />Aflatoxin comes only with grain from outside – UG or TZ and now from Eastern.<br />The source is not important the handling and storage is<br />The mould is naturally occurring and needs food, water, oxygen and heat to grow.<br />13/01/2011<br />8<br />Alatoxin Control<br />
  9. 9. Feeding Animals <br />It is okay to feed suspect food to domestic animals – rather than waste it.<br />It will harm the animals<br />The toxin will find its way into humans through animal products e.g. meat and milk.<br />13/01/2011<br />9<br />Alatoxin Control<br />
  10. 10. Disposal of Contaminated Maize<br />Any maize with aflatoxin must be disposed immediately through burning.<br />13/01/2011<br />10<br />Alatoxin Control<br />
  11. 11. Best Aflatoxin Control<br />Dry the maize immediately upon harvesting<br />Maintain a high standard of hygiene when handling maize as you would other foods.<br />Control can be as simple as that.<br />13/01/2011<br />Alatoxin Control<br />11<br />
  12. 12. Thank You<br />Contributions?<br />13/01/2011<br />Alatoxin Control<br />12<br />

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