Njengoba amamajini emikhiqizweni ye-ethanol aqina noma anyamalale, abakhiqizi abaningi be-ethanol bakhetha ukugxila ekudalweni kwenani kusuka kumakhemikhali. Izinhlamvu ezomisiwe ze-distillers ezinama-solubles (DDGS) Sekuyisikhathi eside i-coproduct enganakwa.