Author
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Wu, Ying Victor |
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Abbott Dr, Thomas |
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Submitted to: Cereal Foods World
Publication Type: Peer Reviewed Journal Publication Acceptance Date: 8/23/1999 Publication Date: N/A Citation: N/A Interpretive Summary: Particle size reduction is a widely used process to separate cereal grains into their individual components such as protein, starch and fat. Lesquerella is a promising new crop that contains substantial amounts of gum with potential uses. An economical method is needed to separate the gum from lesquerella. A number of grinding mills and sieves were used to reduce the particle size of lesquerella seed meal and separate the ground meal into fractions. Pin milling at high speed followed by separation of ground meal by a stream of air resulted in a large fraction of ground meal with high gum content. This economical method to concentrate gum from lesquerella meal increases the potential value of this new crop for farmers to plant and for processors to separate the gum. Technical Abstract: Particle size reduction is a widely used process for cereal grains. In wheat flour milling the wheat kernel after tempering is passed through a number of rollers to break and reduce the particle size and sifted into flour and millfeed fractions. In corn dry milling the kernel after tempering is broken into large pieces by a degerminator and then sifted, aspirated and ground between a number of rollers into grits, flour, germ and meal. Miag vario mill, Allis-Chalmers roller mill, Glen Mills micro hammer/cutter mill, Buhler mill, and Alpine pin mill were used to concentrate gum from defatted Lesquerella seed meal by grinding and sifting/air classification. The best result was obtained when the defatted meal was ground at 14,000 rpm and separated by air classification. |
