Characterization of biopolymers and soy protein isolate-high-methoxyl pectin complex

Detalhes bibliográficos
Autor(a) principal: Freitas,Mírian Luisa Faria
Data de Publicação: 2017
Outros Autores: Albano,Kivia Mislaine, Telis,Vânia Regina Nicoletti
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Polímeros (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000100062
Resumo: Abstract This study aimed at characterizing the soy protein isolate and high-methoxyl pectin biopolymers individually, and the complexes formed by both at different proportions and pHs in order to find the most suitable pH and biopolymer ratios to food application as stabilizers. The biopolymers were evaluated through solubility, charges, turbidimetry, and optical microscopy analyses; the systems with the pair of biopolymers were analyzed through turbidimetry and optical microscopy. High-methoxyl pectin showed high solubility at all pHs investigated. The soy protein isolate showed low solubility at pH 4.5, which is close to its isoelectric point, and complete solubility at pH 11.0. The formation of complexes suggested an attractive interaction between the biopolymers, with high absorbance reading values and images of complexes from optical microscopy. These complexes were present in systems with pHs below the soy protein isolate's isoelectric point, with positive charges; the high-methoxyl pectin, however, had negative ones.
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spelling Characterization of biopolymers and soy protein isolate-high-methoxyl pectin complexattractive interactionmorphologysolubilityturbidimetryzeta potentialAbstract This study aimed at characterizing the soy protein isolate and high-methoxyl pectin biopolymers individually, and the complexes formed by both at different proportions and pHs in order to find the most suitable pH and biopolymer ratios to food application as stabilizers. The biopolymers were evaluated through solubility, charges, turbidimetry, and optical microscopy analyses; the systems with the pair of biopolymers were analyzed through turbidimetry and optical microscopy. High-methoxyl pectin showed high solubility at all pHs investigated. The soy protein isolate showed low solubility at pH 4.5, which is close to its isoelectric point, and complete solubility at pH 11.0. The formation of complexes suggested an attractive interaction between the biopolymers, with high absorbance reading values and images of complexes from optical microscopy. These complexes were present in systems with pHs below the soy protein isolate's isoelectric point, with positive charges; the high-methoxyl pectin, however, had negative ones.Associação Brasileira de Polímeros2017-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000100062Polímeros v.27 n.1 2017reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/0104-1428.2404info:eu-repo/semantics/openAccessFreitas,Mírian Luisa FariaAlbano,Kivia MislaineTelis,Vânia Regina Nicolettieng2017-06-20T00:00:00Zoai:scielo:S0104-14282017000100062Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2017-06-20T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false
dc.title.none.fl_str_mv Characterization of biopolymers and soy protein isolate-high-methoxyl pectin complex
title Characterization of biopolymers and soy protein isolate-high-methoxyl pectin complex
spellingShingle Characterization of biopolymers and soy protein isolate-high-methoxyl pectin complex
Freitas,Mírian Luisa Faria
attractive interaction
morphology
solubility
turbidimetry
zeta potential
title_short Characterization of biopolymers and soy protein isolate-high-methoxyl pectin complex
title_full Characterization of biopolymers and soy protein isolate-high-methoxyl pectin complex
title_fullStr Characterization of biopolymers and soy protein isolate-high-methoxyl pectin complex
title_full_unstemmed Characterization of biopolymers and soy protein isolate-high-methoxyl pectin complex
title_sort Characterization of biopolymers and soy protein isolate-high-methoxyl pectin complex
author Freitas,Mírian Luisa Faria
author_facet Freitas,Mírian Luisa Faria
Albano,Kivia Mislaine
Telis,Vânia Regina Nicoletti
author_role author
author2 Albano,Kivia Mislaine
Telis,Vânia Regina Nicoletti
author2_role author
author
dc.contributor.author.fl_str_mv Freitas,Mírian Luisa Faria
Albano,Kivia Mislaine
Telis,Vânia Regina Nicoletti
dc.subject.por.fl_str_mv attractive interaction
morphology
solubility
turbidimetry
zeta potential
topic attractive interaction
morphology
solubility
turbidimetry
zeta potential
description Abstract This study aimed at characterizing the soy protein isolate and high-methoxyl pectin biopolymers individually, and the complexes formed by both at different proportions and pHs in order to find the most suitable pH and biopolymer ratios to food application as stabilizers. The biopolymers were evaluated through solubility, charges, turbidimetry, and optical microscopy analyses; the systems with the pair of biopolymers were analyzed through turbidimetry and optical microscopy. High-methoxyl pectin showed high solubility at all pHs investigated. The soy protein isolate showed low solubility at pH 4.5, which is close to its isoelectric point, and complete solubility at pH 11.0. The formation of complexes suggested an attractive interaction between the biopolymers, with high absorbance reading values and images of complexes from optical microscopy. These complexes were present in systems with pHs below the soy protein isolate's isoelectric point, with positive charges; the high-methoxyl pectin, however, had negative ones.
publishDate 2017
dc.date.none.fl_str_mv 2017-03-01
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=S0104-14282017000100062
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000100062
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-1428.2404
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 Associação Brasileira de Polímeros
publisher.none.fl_str_mv Associação Brasileira de Polímeros
dc.source.none.fl_str_mv Polímeros v.27 n.1 2017
reponame:Polímeros (São Carlos. Online)
instname:Associação Brasileira de Polímeros (ABPol)
instacron:ABPO
instname_str Associação Brasileira de Polímeros (ABPol)
instacron_str ABPO
institution ABPO
reponame_str Polímeros (São Carlos. Online)
collection Polímeros (São Carlos. Online)
repository.name.fl_str_mv Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)
repository.mail.fl_str_mv ||revista@abpol.org.br
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