Effect of Particle Size and Moisture Content on Viscosity of Fish Feed
A model was developed for the influence of particle size on the extrusion of a fish feed and the physical characteristics of the extrudates evaluated. The study was conducted using factorial experiments in a fractional replication design for four variables with three levels, and one-third of the rep...
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| Veröffentlicht in: | Cereal chemistry 2003, Vol.80 (1), p.20-24 |
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| container_title | Cereal chemistry |
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| creator | Lam, C. Desmond Flores, Rolando A |
| description | A model was developed for the influence of particle size on the extrusion of a fish feed and the physical characteristics of the extrudates evaluated. The study was conducted using factorial experiments in a fractional replication design for four variables with three levels, and one-third of the replicates (34 factorial in 27 units) were examined in a laboratory extruder. The torque-screw speed measurement was used to develop a viscosity model equation that considered different shear rates, product temperature, initial moisture content, and particle size. When particle size decreased, the apparent viscosity became smaller. The barrel pressure was important in producing extrudate with a uniform volume over the range of processing conditions tested because it had a strong correlation with the volumetric expansion. The material with lower moisture and larger particles caused the specific mechanical energy to increase. The viscosity model developed in this study can be applied to the development of large-scale extrusion models that determine the effect of particle size on the feed material extrudates. |
| doi_str_mv | 10.1094/CCHEM.2003.80.1.20 |
| format | Article |
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Desmond ; Flores, Rolando A</creator><creatorcontrib>Lam, C. Desmond ; Flores, Rolando A</creatorcontrib><description>A model was developed for the influence of particle size on the extrusion of a fish feed and the physical characteristics of the extrudates evaluated. The study was conducted using factorial experiments in a fractional replication design for four variables with three levels, and one-third of the replicates (34 factorial in 27 units) were examined in a laboratory extruder. The torque-screw speed measurement was used to develop a viscosity model equation that considered different shear rates, product temperature, initial moisture content, and particle size. When particle size decreased, the apparent viscosity became smaller. The barrel pressure was important in producing extrudate with a uniform volume over the range of processing conditions tested because it had a strong correlation with the volumetric expansion. The material with lower moisture and larger particles caused the specific mechanical energy to increase. The viscosity model developed in this study can be applied to the development of large-scale extrusion models that determine the effect of particle size on the feed material extrudates.</description><identifier>ISSN: 0009-0352</identifier><identifier>EISSN: 1943-3638</identifier><identifier>DOI: 10.1094/CCHEM.2003.80.1.20</identifier><identifier>CODEN: CECHAF</identifier><language>eng</language><publisher>St. Paul, MN: The American Association of Cereal Chemists, Inc</publisher><subject>Biological and medical sciences ; energy ; equations ; extrusion ; Feed and pet food industries ; fish feeds ; Food industries ; Fundamental and applied biological sciences. 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Desmond</creatorcontrib><creatorcontrib>Flores, Rolando A</creatorcontrib><title>Effect of Particle Size and Moisture Content on Viscosity of Fish Feed</title><title>Cereal chemistry</title><description>A model was developed for the influence of particle size on the extrusion of a fish feed and the physical characteristics of the extrudates evaluated. The study was conducted using factorial experiments in a fractional replication design for four variables with three levels, and one-third of the replicates (34 factorial in 27 units) were examined in a laboratory extruder. The torque-screw speed measurement was used to develop a viscosity model equation that considered different shear rates, product temperature, initial moisture content, and particle size. When particle size decreased, the apparent viscosity became smaller. The barrel pressure was important in producing extrudate with a uniform volume over the range of processing conditions tested because it had a strong correlation with the volumetric expansion. The material with lower moisture and larger particles caused the specific mechanical energy to increase. The viscosity model developed in this study can be applied to the development of large-scale extrusion models that determine the effect of particle size on the feed material extrudates.</description><subject>Biological and medical sciences</subject><subject>energy</subject><subject>equations</subject><subject>extrusion</subject><subject>Feed and pet food industries</subject><subject>fish feeds</subject><subject>Food industries</subject><subject>Fundamental and applied biological sciences. 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Desmond ; Flores, Rolando A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3750-b8c89e0bd007f7a28e60f26df8eb7e2888ab4907322e3f265f4ec7bb821cb34e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Biological and medical sciences</topic><topic>energy</topic><topic>equations</topic><topic>extrusion</topic><topic>Feed and pet food industries</topic><topic>fish feeds</topic><topic>Food industries</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>particle size</topic><topic>temperature</topic><topic>viscosity</topic><topic>water content</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lam, C. 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Desmond</au><au>Flores, Rolando A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Particle Size and Moisture Content on Viscosity of Fish Feed</atitle><jtitle>Cereal chemistry</jtitle><date>2003</date><risdate>2003</risdate><volume>80</volume><issue>1</issue><spage>20</spage><epage>24</epage><pages>20-24</pages><issn>0009-0352</issn><eissn>1943-3638</eissn><coden>CECHAF</coden><abstract>A model was developed for the influence of particle size on the extrusion of a fish feed and the physical characteristics of the extrudates evaluated. The study was conducted using factorial experiments in a fractional replication design for four variables with three levels, and one-third of the replicates (34 factorial in 27 units) were examined in a laboratory extruder. The torque-screw speed measurement was used to develop a viscosity model equation that considered different shear rates, product temperature, initial moisture content, and particle size. When particle size decreased, the apparent viscosity became smaller. The barrel pressure was important in producing extrudate with a uniform volume over the range of processing conditions tested because it had a strong correlation with the volumetric expansion. The material with lower moisture and larger particles caused the specific mechanical energy to increase. The viscosity model developed in this study can be applied to the development of large-scale extrusion models that determine the effect of particle size on the feed material extrudates.</abstract><cop>St. Paul, MN</cop><pub>The American Association of Cereal Chemists, Inc</pub><doi>10.1094/CCHEM.2003.80.1.20</doi><tpages>5</tpages></addata></record> |
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| ispartof | Cereal chemistry, 2003, Vol.80 (1), p.20-24 |
| issn | 0009-0352 1943-3638 |
| language | eng |
| recordid | cdi_proquest_journals_230013151 |
| source | Access via Wiley Online Library |
| subjects | Biological and medical sciences energy equations extrusion Feed and pet food industries fish feeds Food industries Fundamental and applied biological sciences. Psychology particle size temperature viscosity water content |
| title | Effect of Particle Size and Moisture Content on Viscosity of Fish Feed |
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