The influence of specific mechanical energy on cornmeal viscosity measured by an on-line system during twin-screw extrusion

dc.creatorCHANG, Y. K.
dc.creatorMARTINEZ-BUSTOS, F.
dc.creatorPARK, T. S.
dc.creatorKOKINI, J .L.
dc.date1999-09-01
dc.date2014-07-17T17:37:44Z
dc.date2015-11-26T13:20:41Z
dc.date2014-07-17T17:37:44Z
dc.date2015-11-26T13:20:41Z
dc.date.accessioned2018-03-28T21:04:03Z
dc.date.available2018-03-28T21:04:03Z
dc.identifierBrazilian Journal of Chemical Engineering. Brazilian Society of Chemical Engineering, v. 16, n. 3, p. 285-295, 1999.
dc.identifier0104-6632
dc.identifierS0104-66321999000300007
dc.identifier10.1590/S0104-66321999000300007
dc.identifierhttp://dx.doi.org/10.1590/S0104-66321999000300007
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321999000300007
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/26068
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/26068
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1239719
dc.descriptionThe influence of specific mechanical energy (SME) on cornmeal viscosity during the twin-screw extrusion at feed moisture contents of 25 and 30% and screw speeds in the range from 100 to 500 rpm was measured. Cornmeal was extruded in a co-rotating, intermeshing twin-screw coupled to a slit die rheometer. One approach to the on-line rheological measurement is to use a slit die with the extruder. In the present work it was show that shear viscosity decreased as a function of SME. The viscosity of cornmeal at the exit die was influenced by screw speed, rate of total mass flow, mass temperature inside the extruder and SME. An increase in screw speed resulted in an increase in SME and a decrease in viscosity. A reduction in slit die height and an increase in screw speed and mass temperature led to a remarkable macromolecular degradation of the starch, as evidenced by the decrease in viscosity.
dc.description285
dc.description295
dc.languageen
dc.publisherBrazilian Society of Chemical Engineering
dc.relationBrazilian Journal of Chemical Engineering
dc.rightsaberto
dc.sourceSciELO
dc.subjectTwin-screw extruder
dc.subjectspecific mechanical energy
dc.subjectslit die rheometer
dc.subjectcornmeal viscosity
dc.titleThe influence of specific mechanical energy on cornmeal viscosity measured by an on-line system during twin-screw extrusion
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución