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$Yeast and mold are quantitated by the fractional gram pour plate ...$

○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○○ ○ ○ ○○ ○ ○○ ○ ○ ○ ○ ○ ○ ○ ○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 <strong>Products</strong>Germ Washingand DryingClean, DryGermGermExtractorsCorn GermMealCorn SteepLiquorCorn GlutenFeedCorn GlutenMealStarch<strong>Products</strong>NutritiveSweetenersFermentationand Other Chemicals7
COMPOSITIONOF WET MILLEDFEED PRODUCTSmay be diverted to makesweeteners or further processedto make any common(unmodified) corn starch.Various modified orderivatized starches may beproduced by treating theslurry of washed starch withchemicals or enzymes. Aftertreatment, the products arerecovered by filtration orcentrifugation and the starchis dried. Information on thestarch and sweetener productsof the corn wet millingindustry may be found in thebooklets Corn Starch andNutritive Sweeteners fromCorn available from theCorn Refiners Associationwebsite, www.corn.org.The four major feed productsderived from corn wetmilling are described as followsby the Corn RefinersAssociation:Corn gluten feed is thatpart of commercial shelledcorn and process residualsthat remain after the extractionof the larger portion ofthe starch, gluten and germby the process employed inthe wet milling manufactureof corn starch and cornstarch derivatives. It may ormay not be pelletized, andmay or may not containcorn steep liquor and/orcorn germ meal. It may containup to 0.5 percent byweight of a nutritive or nonnutritive,inert, non-toxicconditioning agent to improveflowability. It may notcontain other products thatare blended or admixed afterits initial manufacture, orafter pelleting.Corn gluten feed is a mediumprotein, medium energyingredient. It is widelyused in complete feeds orconcentrate for dairy andbeef cattle, poultry (layerand turkey breeders), swine,and as a carrier for addedmicronutrients. It is commonlyprovided at around 20percent protein at 10 percentmoisture.A number of facilities alsooffer wet corn gluten feed.Wet corn gluten feed ismade by screening and pressingwet corn fiber to reducethe water content. It can besold as is, or combined withsteep liquor, corn germ mealor fermentation residues toproduce a product with approximately40 to 60 percentdry matter. Wet corn glutenfeed is commonly used indiets for feedlot cattle anddairy cattle.Corn gluten feed is a majorproduct in internationaltrade in feed ingredients andlarge volumes of U.S. corngluten feed are exported to8
Page 1 and 2: Corn WetMilled FeedProducts
Page 3 and 4: MEMBER COMPANIESArcher Daniels Midl
Page 5 and 6: THE CORN CROPCorn (Zea mays) is gro
Page 7: THE CORN WETMILLING PROCESSIn the c
Page 11 and 12: This high energy proteinconcentrate
Page 13 and 14: an excellent source of slowlydegrad
Page 15 and 16: lood serum 32 . Up to 27percent of
Page 17 and 18: metabolizable energy (ME)of corn gl
Page 19 and 20: span of many pets. Dietsdesigned to
Page 21 and 22: feedstuff composition. Consequently
Page 23 and 24: Amino AcidsThe amino acid requireme
Page 25 and 26: ANALYTICALEXAMINATIONOF FEEDPRODUCT
Page 27 and 28: 16. Wagner JJ, Lusby KS, Horn GW, D
Page 29 and 30: 48. Cavani C, Manfredini M, Breschi
Page 31 and 32: 82. Caleffi A, Broccaioli A. Beer d
Page 33: Corn Refiners Association1701 Penns

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