Possibilities of utilization of co-products from corn grain ethanol and starch production

Hemijska Industrija

卷:67

关键词: corn;    bioethanol;    starch;    dry distillers' grains with solubles;    feed;   

DOI  :  10.2298/HEMIND120405090S

来源: DOAJ

【 摘 要 】

In recent decades, the expansion of alternative fuels production from cropstraditionally used for food and animal feed has led to significant changes inthe field of energy production, agriculture and food industry. Starch andsugar feedstocks for ethanol production (corn, wheat, sugar beet, sugar cane,etc.) require increasing arable land to meet market demands for the biofuelproduction. Although intensive studies are being carried out in order toidentify improved and more cost-effective methods for the utilization oflignocellulosic and communal waste in the production of alcohol fuel, thepossibility of using dry distillers’ grains with solubles (DDGS), by-productof bioethanol production from corn and wheat as well as alcoholic beveragesindustry, is now in focus. Application of DDGS in livestock and poultry dietsin concentrations greater than traditional could positively affect theeconomic viability of this biofuel production, but also stabilize the currentimbalance in the food and animal feed market. However, DDGS feedstuff shouldnot be treated as a perfect substitute for corn because the complexity ofration formulation determined at the farm or feedlot level is driven byenergy and protein and other nutrient requirements, as well as their relativecosts in the ration. Nevertheless, processing of corn by wet milling providesa multitude of co-products suitable for feedstuffs, food industry,pharmaceuticals, chemistry etc. Some of the most important wet millingco-products that have their use in feedstuffs are corn gluten feed and corngluten meal. The use of DDGS as a substitute for traditional feed couldprevent indirect land-use changes associated with biofuel production, andtherefore preserve the environmental destruction by saving the forests andpermanent pastures. The use of distiller’s grains can be beneficial tobiofuel growth as this is an additional, the second largest, source of incomeaccounting of 10-20% total income. In this paper, the possibilities ofby-products from corn grain bioethanol and alcoholic beverages production arerepresented. Emphasis is placed on the dry distillers' grains with solubles,which is the most abundant and for researchers currently the most attractiveco-product of bioethanol industry. Co-products from wet milling starch andethanol production have not yet been thoroughly investigated and thereforerepresent an interesting subject for further research.

【 授权许可】

Unknown