Abstract
Distiller's dried grains with solubles (DDGS) may have more value and utility if they can be separated into high protein and high fiber fractions. A variety of such separation processes have been proposed; two of the most promising processes involve three screening and three air classification unit operations. In the present study, an alternative process involving fewer unit operations is demonstrated. DDGS are subjected to a single screening, and the oversize particles are processed in a mill setup so that it narrows the particle size distribution of the oversize fraction. The milled DDGS is then processed in an air classification device known as an aspirator, which separates it into high and low terminal velocity fractions. The combination of the undersize fraction and the low terminal velocity fraction were substantially enriched in protein. The separation achieved by this process compares favorably to other reported processes while being less complex.
References
American Society of Agricultural Engineers (2003) ANSI/ASAE S319.3 FEB03 method of determining and expressing fineness of feed materials by sieving. In ANSI/ASAE Standards, American Society of Agricultural Engineers, St. Joseph, MI.
AOAC International. (2003). Official methods of analysis of AOAC International (17th ed.). Gaithersburg: AOAC International.
Belyea, R. L., Rausch, K. D., & Tumbleson, M. E. (2004). Composition of corn and distillers dried grains with solubles from dry grind ethanol processing. Bioresource Technology, 94(3), 293–298.
Bettge, A. D., & Pomeranz, Y. (1993). Air-aspirated cleaning to separate sound from preharvest-sprouted wheat. Cereal Chemistry, 70(1), 36–41.
Bhadra, R., Rosentrater, K. A., & Muthukumarappan, K. (2009). Cross-sectional staining and surface properties of DDGS particles and their influence on flowability. Cereal Chemistry, 86(4), 410–420.
Deming, W. E. (1943). Propagation of error. In Statistical adjustment of error (pp. 37–48). New York: John Wiley & Sons.
Fatka, J. (2010). Ethanol co-product approaching ‘feed wall’. Feedstuffs, 82(43).
Garcia, R. A., Flores, R. A., & Phillips, J. G. (2005). Use of an aspirator to separate meat & bone meal into high ash and high protein streams. Transactions of ASAE, 48(2), 703–708.
Gracza, R. (1959). The subsieve-size fractions of a soft wheat flour produced by air classification. Cereal Chemistry, 36(6), 465–487.
Herrman, T. (2001). Sampling: Procedures for feed. Kansas State University Agricultural Experiment Station and Cooperative Extension Service.
Jillavenkatesa, A., Dapkunas, S. J., & Lum, L. H. (2001). Particle size characterization—special publication 960–1. Washington DC: US Government Printing Office.
Liu, K. (2008). Particle size distribution of distillers dried grains with solubles (DDGS) and relationships to compositional and color properties. Bioresource Technology, 99(17), 8421–8428.
Liu, K. (2009a). Effects of particle size distribution, compositional and color properties of ground corn on quality of distillers dried grains with solubles (DDGS). Bioresource Technology, 100(19), 4433–4440.
Liu, K. (2009b). Fractionation of distillers dried grains with solubles (DDGS) by sieving and winnowing. Bioresource Technology, 100(24), 6559–6569.
Singh, V., Moreau, R. A., Hicks, K. B., Belyea, R. L., & Staff, C. H. (2002). Removal of fiber from distillers dried grains with solubles (DDGS) to increase value. Transactions of ASAE, 45(2), 389–392.
Srinivasan, R., Moreau, R. A., Rausch, K. D., Belyea, R. L., Tumbleson, M. E., & Singh, V. (2005). Separation of fiber from distillers dried grains with solubles (DDGS) using sieving and elutriation. Cereal Chemistry, 82(5), 528–533.
Srinivasan, R., To, F., & Columbus, E. (2009). Pilot scale fiber separation from distillers dried grains with solubles (DDGS) using sieving and air classification. Bioresource Technology, 100(14), 3548–3555.
Świątkiewicz, S., & Koreleski, J. (2008). The use of distillers dried grains with solubles (DDGS) in poultry nutrition. World's Poultry Science Journal, 64(2), 257–265.
Whitney, M. H., Shurson, G. C., Johnston, L. J., Wulf, D. M., & Shanks, B. C. (2006). Growth performance and carcass characteristics of grower-finisher pigs fed high-quality corn distillers dried grain with solubles originating from a modern midwestern ethanol plant. Journal of Animal Science, 84(12), 3356–3363.
Wu, Y. V., & Stringfellow, A. C. (1986). Simple dry fractionation of corn distillers' dried grains and corn distillers' dried grains with solubles. Cereal Chemistry, 63(1), 60–61.
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Garcia, R.A., Rosentrater, K.A. Fractionation of Distillers Dried Grains with Solubles (DDGS) Through a Narrowing of Particle Size Distribution Followed by Aspiration. Food Bioprocess Technol 5, 2623–2629 (2012). https://doi.org/10.1007/s11947-011-0637-0
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DOI: https://doi.org/10.1007/s11947-011-0637-0