Products

○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○may be found in the bookletCorn Oil available from theCorn Refiners Associationwebsite, www.corn.org.The remaining mixture ofhull and endosperm thenpasses through a series ofgrinding and screening operations.The hull particles areremoved on screens, whilethe finer particles of proteinand starch pass through. Thehull is used as a constituentin animal feed or for productionof refined corn fiber(bran) for food use.Next, the water slurry ofstarch and gluten is separatedin centrifuges. Becausestarch and gluten differ indensity, almost completeseparation is obtained. Typicaloperations yield a glutenstream containing over 60percent protein, while thestarch stream is over 99 percentstarch. The gluten isdried and sold as glutenmeal (60 percent protein) orit may be used as an ingredientin corn gluten feed (21percent protein).The white, nearly purestarch slurry is furtherwashed to remove smallquantities of solubles. Atthis stage the starch slurryShelled CornFigure 2The Corn Wet Milling ProcessCorn CleanersSteep TanksGermSeparatorsGrinding MillsScreensCentrifugalSeparatorsHydrocloneStarch WashingSteepwaterGermFiberGlutenRefinerySteepwaterEvaporatorsCornOilFeed ProductsGerm Washingand DryingClean, DryGermGermExtractorsCorn GermMealCorn SteepLiquorCorn GlutenFeedCorn GlutenMealStarchProductsNutritiveSweetenersFermentationand Other Chemicals7