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vol. 11, nr. 3 (2008)
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Influence of moisture content of maize cob cores on compression process parameters
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Stanisław Skonecki, Milena Potręć:
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Department of Machine Operation in Food Industry, University of Life Sciences, ul. Doświadczalna 44, 20-236 Lublin |
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vol. 11 (2008), nr. 3,
pp. 725-732
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abstract:
The paper presents results of a study on the influence of moisture of maize cob cores on some compression process parameters, agglomeration ability and agglomerate quality. Material moisture was established from 12% to 22%. The experiments were done with the help of a universal machine Zwick Z020/TN25. The material was compressed in a closed compression assembly (die). Maximum load was established at 25 kN, and the piston velocity at 10 mm min-1. The following parameters were analysed i.e. material density in the die, compression and specific compression work, a coefficient describing the material ability to compression, and strength of agglomerates. A decrease of density of maize cob cores in the die and density of agglomerate as well as compression and specific compression work for higher values of moisture were observed. Higher level of moisture had a positive effect on agglomeration ability and, conversely, a negative one on the strength of agglomerates and on their quality.
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keywords:
compression parameters, moisture, maize cob cores
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original in:
Polish
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