Effects of acid concentration and extrusion variables on some physical characteristics and energy requirements of cassava starch

Detalhes bibliográficos
Autor(a) principal: Chang,Y.K.
Data de Publicação: 2003
Outros Autores: El-Dash,A.A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Chemical Engineering
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322003000200006
Resumo: Some physical characteristics of cassava starch extruded using a single-screw extruder, varying acid concentration, feed moisture content and barrel temperature were evaluated using surface response methodology. The combined effects of different concentrations of sulphuric acid and extruder parameters provided unique physical functionality to the extruded cassava starch. Product hardness and torque value was highly significant for three variables. The addition of sulphuric acid (0.06N) during extrusion cooking gave the highest values for expansion and softness of the extruded samples. The highest torque values (60-70 Nm) were for the samples extruded at the lowest moisture content, while the lowest torque values (23.0-26.0 Nm) were for the samples extruded at the highest values of feed moisture and barrel temperature.
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spelling Effects of acid concentration and extrusion variables on some physical characteristics and energy requirements of cassava starchSingle-screw extrudersulphuric acidhardnesscassava starchSome physical characteristics of cassava starch extruded using a single-screw extruder, varying acid concentration, feed moisture content and barrel temperature were evaluated using surface response methodology. The combined effects of different concentrations of sulphuric acid and extruder parameters provided unique physical functionality to the extruded cassava starch. Product hardness and torque value was highly significant for three variables. The addition of sulphuric acid (0.06N) during extrusion cooking gave the highest values for expansion and softness of the extruded samples. The highest torque values (60-70 Nm) were for the samples extruded at the lowest moisture content, while the lowest torque values (23.0-26.0 Nm) were for the samples extruded at the highest values of feed moisture and barrel temperature.Brazilian Society of Chemical Engineering2003-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322003000200006Brazilian Journal of Chemical Engineering v.20 n.2 2003reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322003000200006info:eu-repo/semantics/openAccessChang,Y.K.El-Dash,A.A.eng2003-06-25T00:00:00Zoai:scielo:S0104-66322003000200006Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2003-06-25T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false
dc.title.none.fl_str_mv Effects of acid concentration and extrusion variables on some physical characteristics and energy requirements of cassava starch
title Effects of acid concentration and extrusion variables on some physical characteristics and energy requirements of cassava starch
spellingShingle Effects of acid concentration and extrusion variables on some physical characteristics and energy requirements of cassava starch
Chang,Y.K.
Single-screw extruder
sulphuric acid
hardness
cassava starch
title_short Effects of acid concentration and extrusion variables on some physical characteristics and energy requirements of cassava starch
title_full Effects of acid concentration and extrusion variables on some physical characteristics and energy requirements of cassava starch
title_fullStr Effects of acid concentration and extrusion variables on some physical characteristics and energy requirements of cassava starch
title_full_unstemmed Effects of acid concentration and extrusion variables on some physical characteristics and energy requirements of cassava starch
title_sort Effects of acid concentration and extrusion variables on some physical characteristics and energy requirements of cassava starch
author Chang,Y.K.
author_facet Chang,Y.K.
El-Dash,A.A.
author_role author
author2 El-Dash,A.A.
author2_role author
dc.contributor.author.fl_str_mv Chang,Y.K.
El-Dash,A.A.
dc.subject.por.fl_str_mv Single-screw extruder
sulphuric acid
hardness
cassava starch
topic Single-screw extruder
sulphuric acid
hardness
cassava starch
description Some physical characteristics of cassava starch extruded using a single-screw extruder, varying acid concentration, feed moisture content and barrel temperature were evaluated using surface response methodology. The combined effects of different concentrations of sulphuric acid and extruder parameters provided unique physical functionality to the extruded cassava starch. Product hardness and torque value was highly significant for three variables. The addition of sulphuric acid (0.06N) during extrusion cooking gave the highest values for expansion and softness of the extruded samples. The highest torque values (60-70 Nm) were for the samples extruded at the lowest moisture content, while the lowest torque values (23.0-26.0 Nm) were for the samples extruded at the highest values of feed moisture and barrel temperature.
publishDate 2003
dc.date.none.fl_str_mv 2003-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322003000200006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322003000200006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0104-66322003000200006
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Brazilian Society of Chemical Engineering
publisher.none.fl_str_mv Brazilian Society of Chemical Engineering
dc.source.none.fl_str_mv Brazilian Journal of Chemical Engineering v.20 n.2 2003
reponame:Brazilian Journal of Chemical Engineering
instname:Associação Brasileira de Engenharia Química (ABEQ)
instacron:ABEQ
instname_str Associação Brasileira de Engenharia Química (ABEQ)
instacron_str ABEQ
institution ABEQ
reponame_str Brazilian Journal of Chemical Engineering
collection Brazilian Journal of Chemical Engineering
repository.name.fl_str_mv Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)
repository.mail.fl_str_mv rgiudici@usp.br||rgiudici@usp.br
_version_ 1754213171471581184

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