On-line measurement of residence time distribution in a food extruder
A technique was based on electrical conductivity of material in a die, and used a series circuit consisting of a 5 mm dia die, a 10 ohm resistor, and a 15V dc power supply. Material conductivity was altered with addition of an electrolyte tracer at the feed inlet. Change in current flow was measured...
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| Veröffentlicht in: | Journal of food science 1998-05, Vol.63 (3), p.529-534 |
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| container_end_page | 534 |
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| container_issue | 3 |
| container_start_page | 529 |
| container_title | Journal of food science |
| container_volume | 63 |
| creator | Choudhury, G.S. (Univ. of Alaska Fairbanks, Kodiak, AK.) Gautam, A |
| description | A technique was based on electrical conductivity of material in a die, and used a series circuit consisting of a 5 mm dia die, a 10 ohm resistor, and a 15V dc power supply. Material conductivity was altered with addition of an electrolyte tracer at the feed inlet. Change in current flow was measured as a proportional voltage response across the resistor. Using a twin-screw extruder, with L/D 32:1, the RTD of rice flour at 15% moisture was determined using sodium nitrate as tracer. Under steady state, the voltage across the resistor was measured. The on-line results correlated well with the established erythrosine dye method. The effects of screw configuration, feed flow rate, and screw speed were precisely determined by the on-line method |
| doi_str_mv | 10.1111/j.1365-2621.1998.tb15779.x |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 0022-1147 |
| ispartof | Journal of food science, 1998-05, Vol.63 (3), p.529-534 |
| issn | 0022-1147 1750-3841 |
| language | eng |
| recordid | cdi_proquest_journals_194389072 |
| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Biological and medical sciences Electricity EQUIPO EXTRUSION FARINE DE RIZ Food engineering food extrusion Food industries Food science FOOD TECHNOLOGY Fundamental and applied biological sciences. Psychology General aspects HARINA DE ARROZ MATERIEL MEASUREMENT MEDICION MESURE on-line residence time Rice RICE FLOUR TECHNOLOGIE ALIMENTAIRE TECNOLOGIA DE LOS ALIMENTOS TWIN SCREW EXTRUDERS |
| title | On-line measurement of residence time distribution in a food extruder |
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