Dry-Milled Fractions

DecorLicaLed kernels are used in Africa and India for the preparation of boiled, parched, or steamed products, whereas refined sorghum grits are used as brewing 

Chemical Composition of Dry-Milled Fractions of Sorghum and Millets 

Extraction rate, % Whole Sorghum too Hand-Pounded 74.1 Mechanical Decorticated and Hammer-Milled 77.4 Roller-Milled 83.5 

Source Data from Kebakile, M.M. et at. 2007. Cereal Foods World 52(3) 129-137. 

Note Average of 12 sorghum types with diverse physicochemical properties. Light-colored meals have higher L and hue ab values. C ab values were positively correlated to bran contamination and ash content. 

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Rooney, L.W, and Sema-Saldivar, S.O. 1991. Sorghum. Chapter 5 in Handbook of Cereal Science and Technology, K. Lorenz and K. Kulp (eds.). Marcel Dekker, New York. Rooney, L.W, and Sema-Saldivar, S.O. 2003. Food uses of whole com and dry milled fractions. In White, P. and Johnson, L. (eds.). Com Chemistry and Technology. American Association of Cereal Chemists, St. Paul, MN. 

Main Food Uses of Refined Dry-Milled Fractions of Maize... 

What are the physical grain properties that favor most dry-milling operations in terms of product yields and quality of dry-milled fractions ... 

What are the nutrients generally added to enrich refined wheat flours and dry-milled fractions Why were these nutrients chosen ... 

Serna-Saldivar, S.O. 2008. Manufacturing of cereal-based dry milled fractions, potato flour, dry masa flour and starches. Chapter 2 in Industrial Manifacture of Snack Foods. Kennedys Publications, London. 

Serna-Saldivar, S.O., Gomez, M.H., and Rooney, L.W. 2000. Food uses of regular and speciality corns and their dry milled fractions. Chapter 11 in Speciality Corns, A.R. Hallauer (ed.). Second edition. CRC Press, Boca Raton, FL. 

Most popular category of snack foods, generally obtained after simple shaping of doughs or dry-milled fractions forced through an extruder (direct expanded products). Raw materials include various types of flours and grits. 

These mills consist of break and reduction rolls and sieves to separate dry-milled fractions and calculate flour extraction or milling yield. The resulting refined flours can be further characterized cr used to determine rheological properties. 

The particle-size determination of dry-milled fractions greatly affects quality. 

The amount of specks (i.e., black specks in maize grits, bran specks in flours) can negatively affect the appearance of processed snack foods. Specks are present in dry-milled fractions due to broken sieves or the improper calibration of purifiers. 

This is the most important single component of dry-milled fractions and greatly affects functionality. 

Blessin, C.W., Brecher, J.D., and Dimler, R.J. 1963. Carotenoids of com and sorghum. V. Distribution of xanthophyUs, and carotenes in hand dissected and dry milled fractions of yellow dent com. Cereal Chem. 40 582-586. 

Extraction Milling term used to express the percentage of flour or the dry-milled fractions extracted from grains. 

Piansifter A gyrating bolting machine consisting of a set of sieves positioned one on top of the other widely used to classify dry-milled fractions by size. Flights on the sieves arrest the circular movement of mill stocks and forward than to the next sieve. 

TABLE 7.7 Chemical Composition of Dry-Milled Fractions of Sorghum and Millets.220... 

Potential applications of membrane processes in cereal production are in the treatment of stillage, in com wet milling operations, evaporation of steep water, concentration of dilute sweet waters, and in polishing of reverse osmosis permeate and evaporator overheads. Com proteins can be recovered from stillage solubles of dry milled fractions of com, grits, flour, degerminated meal, etc. by reverse osmosis. 

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