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Bioresource and Agricultural Engineering

Selected Works

2008

Physical properties

Articles 1 - 4 of 4

Full-Text Articles in Life Sciences

On The Physical Properties Of Distillers Dried Grains With Solubles (Ddgs), Klein Ileleji, Kurt A. Rosentrater Jul 2008

On The Physical Properties Of Distillers Dried Grains With Solubles (Ddgs), Klein Ileleji, Kurt A. Rosentrater

Kurt A. Rosentrater

Distillers dried grains with solubles (DDGS) is a complex heterogeneous granular solid that exhibit a wide range of physical and chemical properties. This fact is one of the major reasons that livestock nutritionists often find it difficult to include it in their feed rations. The rapid growth of the corn ethanol industry, the primary generator of DDGS, has resulted in a huge influx of this product into the marketplace. Unfortunately, the lack of standard methods for product quality determination and reporting is becoming a bottleneck to expanding the market for this product. Challenges in the logistics of moving DDGS through ...


Effects Of Feed And Extruder Parameters On Extrudates Containing Ddgs, S. Kannadhason, Kasiviswanathan Muthukumarappan, Kurt A. Rosentrater Jun 2008

Effects Of Feed And Extruder Parameters On Extrudates Containing Ddgs, S. Kannadhason, Kasiviswanathan Muthukumarappan, Kurt A. Rosentrater

Kurt A. Rosentrater

Twenty seven isocaloric (3.05 kcal/g) ingredient blends were factorially formulated using three levels each of DDGS (20, 25, and 30% db), protein (30, 32.5, and 35% db), and feed moisture content (25, 35, and 45% db), along with appropriate quantities of cassava starch, soybean meal, fish meal, whey, vitamin, and mineral mix to produce a balanced diet for tilapia feed. The ingredient blends were extruded using a laboratory-scale single screw extruder with varying screw speeds (100, 150, and 200 rpm) and extruder barrel temperatures (100, 125, and 150 o C). The resulting extrudates were subjected to extensive ...


Twin Screw Extrusion Of Ddgs-Based Aquaculture Feeds, S. Kannadhason, Kurt A. Rosentrater, Kasiviswanathan Muthukumarappan, Micahel L. Brown Jun 2008

Twin Screw Extrusion Of Ddgs-Based Aquaculture Feeds, S. Kannadhason, Kurt A. Rosentrater, Kasiviswanathan Muthukumarappan, Micahel L. Brown

Kurt A. Rosentrater

Six isocaloric (3.65 kcal/g), isonitrogenous (35% db protein), ingredient blends were prepared with 0, 17.5, 20, 22.5, 25, and 27.5% DDGS and other common ingredients, including soybean meal, corn, fish meal, whey, soybean oil, and vitamin and mineral mix, in order to produce balanced rations appropriate for tilapia grower diets. The blends were moisture balanced to 15% db, and then extruded in a pilot-scale twin screw extruder. The extrusion process was carried out using two processing conditions: a 2 mm die at 190 rpm (with temperatures ranging from 80 to 110 o C, depending on ...


Properties Of Distillers Grains Composites: A Preliminary Investigation, Vanessa Cheesbrough, Kurt A. Rosentrater, Jerry Visser Jan 2008

Properties Of Distillers Grains Composites: A Preliminary Investigation, Vanessa Cheesbrough, Kurt A. Rosentrater, Jerry Visser

Kurt A. Rosentrater

Interest in renewable biofuel sources has intensified in recent years, leading to greatly increased production of ethanol and its primary coproduct, Distillers Dried Grain with Solubles (DDGS). Consequently, the development of new outlets for DDGS has become crucial to maintaining the economic viability of the industry. In light of these developments, this preliminary study aimed to determine the suitability of DDGS for use as a biofiller in low-cost composites that could be produced by rapid prototyping applications. The effects of DDGS content, particle size, curing temperature, and compression on resulting properties, such as flexural strength, modulus of elasticity, water activity ...