Pellet Quality of Corn-Based DDGS

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2021
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Ma, Mingjun
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Canadian Center of Science and Education
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Agricultural and Biosystems Engineering

Since 1905, the Department of Agricultural Engineering, now the Department of Agricultural and Biosystems Engineering (ABE), has been a leader in providing engineering solutions to agricultural problems in the United States and the world. The department’s original mission was to mechanize agriculture. That mission has evolved to encompass a global view of the entire food production system–the wise management of natural resources in the production, processing, storage, handling, and use of food fiber and other biological products.

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In 1905 Agricultural Engineering was recognized as a subdivision of the Department of Agronomy, and in 1907 it was recognized as a unique department. It was renamed the Department of Agricultural and Biosystems Engineering in 1990. The department merged with the Department of Industrial Education and Technology in 2004.

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1905–present

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  • Department of Agricultural Engineering (1907–1990)

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Food Science and Human Nutrition

The Department of Food Science and Human Nutrition (FSHN) at Iowa State University is jointly administered by the Colleges of Agriculture and Life Sciences and Human Science. FSHN combines the study and practical application of food sciences and technology with human nutrition in preparation for a variety of fields including: the culinary sciences, dietetics, nutrition, food industries, and diet and exercise.

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The department was established in 1991 through the merging of the Department of Food Sciences and Technology (of the College of Agriculture), and the Department of Food and Nutrition (of the College of Family and Consumer Sciences).

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Leopold Center for Sustainable Agriculture
The Leopold Center is a research and education center on the campus of Iowa State University created to identify and reduce negative environmental and social impacts of farming and develop new ways to farm profitably while conserving natural resources.
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The rapid growth of corn-based dry grind ethanol plants over the past decade in the US has resulted in a great increase in production of the coproduct DDGS (distillers dried grains with solubles). Since some physical properties like low bulk density and poor flowability can impact the market potential of DDGS, pelleting of DDGS can be one of the easiest ways to improve this situation. Pellet quality is the focus of this project. The pelleting process was conducted with three initial DDGS moisture contents and two different dies; a total of six runs were complete d to produce DDGS pellets. The physical qualities of pelleted DDGS were determined by measuring durability bulk density angle of repose and color of the pellets. The results showed that the durability ranged from 42% to 89%, the highest pellet durability occurred when the moisture c ontent was 20% db and the die diameter was 1/8 in. The bulk density increased when the DDGS moisture content decreased, and the highest bulk density was observed when the moisture content was 10% db and the die diameter was 1/8 in
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This article is published as Ma, Mingjun, and Kurt A. Rosentrater. "Pellet Quality of Corn-Based DDGS." Journal of Food Research 10, no. 3 (2021): 1-25. DOI: 10.5539/jfr.v10n3p25. Copyright 2021 The Authors. Attribution 4.0 International (CC BY 4.0). Posted with permission.
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