Publication:

Crop cleaning. Professional crop cleaning as an essential contribution to grain hygiene management

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    Authors & editors

    Publisher Milling & Grain
    Year of publication 2018 March
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    Medium Digital
    Edition1
    Topics

    Cereal processes > Handling, storage & transport

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    Scope & contentDr. Heike Knoerzer, PETKUS Academy, Wutha-Farnroda (Germany)

    Losses begin after the harvest. According to official estimates, about one third of the grain produced for food purposes is lost during post-harvest processes such as storing, drying, cleaning or milling.

    Process engineering with regard to optimising post-harvest processes receives little attention from a scientific perspective. Less than five percent of research funding has been allocated to this critical issue in recent years.

    Many grain lots have to be discarded because they have been attacked in part by insects, contaminated with mycotoxins or because they contain an unacceptable level of critical impurities (e.g. invasive alien species) or closely related species. Already popped popcorn maize, red coloured bran in white rice, sclerotinia in sunflowers or ergot in rye can destroy an entire field production if no adequate processing technology is available. Bean weevils, ambrosia, cuscuta, deoxynivalenol or aflatoxin lead to post-harvest death if processing is inadequate. By contrast, investments in modern technologies are paying off.

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