Thermal behavior of myofibrillar proteins from the adductor muscles of scallops: a differential scanning calorimetric study (DSC)
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , |
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=S0104-66322003000200009 |
Resumo: | Muscles and different proteins obtained from scallops (Chlamys tehuelchus and Zygochlamys patagonica) were analyzed. In both species of scallop, the thermograms of striated and smooth muscles showed two endothermic transitions. The Tmax values corresponding to striated and smooth muscles from C. tehuelchus were 53.2, 79.0ºC and 52.7, 78.0 ºC, respectively. The Tmax corresponding to striated and smooth muscles of Z. patagonica were 55.0, 79.2ºC and 54.7, 78.7ºC, respectively. No significant differences were observed between the thermal transitions of myofibrils and actomyosin of both types of muscles from both species of scallop. Irrespective of the species, the thermal stability decreased when the pH of the muscles was increased. The increase in ionic strength greatly affected Tmax, the deltaH total and the deltaH of the first transition. A significant decrease in deltaH total and deltaH corresponding to both transitions was observed, particularly in the striated muscles of Zygochlamys patagonica. These results indicate a major sensitivity of the adductor muscles of Zygochlamys to changes in the chemical environment. |
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Thermal behavior of myofibrillar proteins from the adductor muscles of scallops: a differential scanning calorimetric study (DSC)thermal stabilitychemical environmentscallopMuscles and different proteins obtained from scallops (Chlamys tehuelchus and Zygochlamys patagonica) were analyzed. In both species of scallop, the thermograms of striated and smooth muscles showed two endothermic transitions. The Tmax values corresponding to striated and smooth muscles from C. tehuelchus were 53.2, 79.0ºC and 52.7, 78.0 ºC, respectively. The Tmax corresponding to striated and smooth muscles of Z. patagonica were 55.0, 79.2ºC and 54.7, 78.7ºC, respectively. No significant differences were observed between the thermal transitions of myofibrils and actomyosin of both types of muscles from both species of scallop. Irrespective of the species, the thermal stability decreased when the pH of the muscles was increased. The increase in ionic strength greatly affected Tmax, the deltaH total and the deltaH of the first transition. A significant decrease in deltaH total and deltaH corresponding to both transitions was observed, particularly in the striated muscles of Zygochlamys patagonica. These results indicate a major sensitivity of the adductor muscles of Zygochlamys to changes in the chemical environment.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=S0104-66322003000200009Brazilian Journal of Chemical Engineering v.20 n.2 2003reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322003000200009info:eu-repo/semantics/openAccessParedi,M.E.Tomas,M.C.Crupkin,M.eng2003-06-26T00:00:00Zoai:scielo:S0104-66322003000200009Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2003-06-26T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false |
dc.title.none.fl_str_mv |
Thermal behavior of myofibrillar proteins from the adductor muscles of scallops: a differential scanning calorimetric study (DSC) |
title |
Thermal behavior of myofibrillar proteins from the adductor muscles of scallops: a differential scanning calorimetric study (DSC) |
spellingShingle |
Thermal behavior of myofibrillar proteins from the adductor muscles of scallops: a differential scanning calorimetric study (DSC) Paredi,M.E. thermal stability chemical environment scallop |
title_short |
Thermal behavior of myofibrillar proteins from the adductor muscles of scallops: a differential scanning calorimetric study (DSC) |
title_full |
Thermal behavior of myofibrillar proteins from the adductor muscles of scallops: a differential scanning calorimetric study (DSC) |
title_fullStr |
Thermal behavior of myofibrillar proteins from the adductor muscles of scallops: a differential scanning calorimetric study (DSC) |
title_full_unstemmed |
Thermal behavior of myofibrillar proteins from the adductor muscles of scallops: a differential scanning calorimetric study (DSC) |
title_sort |
Thermal behavior of myofibrillar proteins from the adductor muscles of scallops: a differential scanning calorimetric study (DSC) |
author |
Paredi,M.E. |
author_facet |
Paredi,M.E. Tomas,M.C. Crupkin,M. |
author_role |
author |
author2 |
Tomas,M.C. Crupkin,M. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Paredi,M.E. Tomas,M.C. Crupkin,M. |
dc.subject.por.fl_str_mv |
thermal stability chemical environment scallop |
topic |
thermal stability chemical environment scallop |
description |
Muscles and different proteins obtained from scallops (Chlamys tehuelchus and Zygochlamys patagonica) were analyzed. In both species of scallop, the thermograms of striated and smooth muscles showed two endothermic transitions. The Tmax values corresponding to striated and smooth muscles from C. tehuelchus were 53.2, 79.0ºC and 52.7, 78.0 ºC, respectively. The Tmax corresponding to striated and smooth muscles of Z. patagonica were 55.0, 79.2ºC and 54.7, 78.7ºC, respectively. No significant differences were observed between the thermal transitions of myofibrils and actomyosin of both types of muscles from both species of scallop. Irrespective of the species, the thermal stability decreased when the pH of the muscles was increased. The increase in ionic strength greatly affected Tmax, the deltaH total and the deltaH of the first transition. A significant decrease in deltaH total and deltaH corresponding to both transitions was observed, particularly in the striated muscles of Zygochlamys patagonica. These results indicate a major sensitivity of the adductor muscles of Zygochlamys to changes in the chemical environment. |
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=S0104-66322003000200009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322003000200009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0104-66322003000200009 |
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_ |
1754213171475775488 |