Determination of moisture content and water activity in algae and fish by thermoanalytical techniques

Detalhes bibliográficos
Autor(a) principal: Silva, Vilma Mota da
Data de Publicação: 2008
Outros Autores: Silva, Luciana Almeida, Andrade, Jailson Bittencourt de, Veloso, Márcia Cristina da Cunha, Santos, Gislaine Vieira dos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/3843
Resumo: p. 901-905.
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spelling Silva, Vilma Mota daSilva, Luciana AlmeidaAndrade, Jailson Bittencourt deVeloso, Márcia Cristina da CunhaSantos, Gislaine Vieira dosSilva, Vilma Mota daSilva, Luciana AlmeidaAndrade, Jailson Bittencourt deVeloso, Márcia Cristina da CunhaSantos, Gislaine Vieira dos2011-11-23T13:46:35Z2011-11-23T13:46:35Z20080100-4042http://www.repositorio.ufba.br/ri/handle/ri/3843v. 31, n. 4.p. 901-905.The water content in seafoods is very important since it affects their sensorial quality, microbiological stability, physical characteristics and shelf life. In this study, thermoanalytical techniques were employed to develop a simple and accurate method to determine water content (moisture) by thermogravimetry (TG) and water activity from moisture content values and freezing point depression using differential scanning calorimetry (DSC). The precision of the results suggests that TG is a suitable technique to determine moisture content in biological samples. The average water content values for fish samples of Lutjanus synagris and Ocyurus chrysurus species were 76.4 ± 5.7% and 63.3 ± 3.9%, respectively, while that of Ulva lactuca marine algae species was 76.0 ± 4.4%. The method presented here was also successfully applied to determine water activity in two species of fish and six species of marine algae collected in the Atlantic coastal waters of Bahia, in Brazil. Water activity determined in fish samples ranged from 0.946 – 0.960 and was consistent with values reported in the literature, i.e., 0.9 – 1.0. The water activity values determined in marine algae samples lay within the interval of 0.974 – 0.979.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2011-11-23T13:46:35Z No. of bitstreams: 1 a31v31n4.pdf: 112618 bytes, checksum: d91c23fa8bc48d4caf59cf6dd18493fc (MD5)Made available in DSpace on 2011-11-23T13:46:35Z (GMT). No. of bitstreams: 1 a31v31n4.pdf: 112618 bytes, checksum: d91c23fa8bc48d4caf59cf6dd18493fc (MD5) Previous issue date: 2008São PauloMoisture contentWater activityThermoanalytical techniquesDetermination of moisture content and water activity in algae and fish by thermoanalytical techniquesQuímica Novainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAinfo:eu-repo/semantics/openAccessORIGINALa31v31n4.pdfa31v31n4.pdfapplication/pdf112618https://repositorio.ufba.br/bitstream/ri/3843/1/a31v31n4.pdfd91c23fa8bc48d4caf59cf6dd18493fcMD51LICENSElicense.txtlicense.txttext/plain1906https://repositorio.ufba.br/bitstream/ri/3843/2/license.txt4b90502dc13095f7b6c1fd81915e98f8MD52ri/38432022-07-05 14:03:28.247oai:repositorio.ufba.br:ri/3843Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:28Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Determination of moisture content and water activity in algae and fish by thermoanalytical techniques
dc.title.alternative.pt_BR.fl_str_mv Química Nova
title Determination of moisture content and water activity in algae and fish by thermoanalytical techniques
spellingShingle Determination of moisture content and water activity in algae and fish by thermoanalytical techniques
Silva, Vilma Mota da
Moisture content
Water activity
Thermoanalytical techniques
title_short Determination of moisture content and water activity in algae and fish by thermoanalytical techniques
title_full Determination of moisture content and water activity in algae and fish by thermoanalytical techniques
title_fullStr Determination of moisture content and water activity in algae and fish by thermoanalytical techniques
title_full_unstemmed Determination of moisture content and water activity in algae and fish by thermoanalytical techniques
title_sort Determination of moisture content and water activity in algae and fish by thermoanalytical techniques
author Silva, Vilma Mota da
author_facet Silva, Vilma Mota da
Silva, Luciana Almeida
Andrade, Jailson Bittencourt de
Veloso, Márcia Cristina da Cunha
Santos, Gislaine Vieira dos
author_role author
author2 Silva, Luciana Almeida
Andrade, Jailson Bittencourt de
Veloso, Márcia Cristina da Cunha
Santos, Gislaine Vieira dos
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Silva, Vilma Mota da
Silva, Luciana Almeida
Andrade, Jailson Bittencourt de
Veloso, Márcia Cristina da Cunha
Santos, Gislaine Vieira dos
Silva, Vilma Mota da
Silva, Luciana Almeida
Andrade, Jailson Bittencourt de
Veloso, Márcia Cristina da Cunha
Santos, Gislaine Vieira dos
dc.subject.por.fl_str_mv Moisture content
Water activity
Thermoanalytical techniques
topic Moisture content
Water activity
Thermoanalytical techniques
description p. 901-905.
publishDate 2008
dc.date.issued.fl_str_mv 2008
dc.date.accessioned.fl_str_mv 2011-11-23T13:46:35Z
dc.date.available.fl_str_mv 2011-11-23T13:46:35Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/3843
dc.identifier.issn.none.fl_str_mv 0100-4042
dc.identifier.number.pt_BR.fl_str_mv v. 31, n. 4.
identifier_str_mv 0100-4042
v. 31, n. 4.
url http://www.repositorio.ufba.br/ri/handle/ri/3843
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
instname_str Universidade Federal da Bahia (UFBA)
instacron_str UFBA
institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
bitstream.url.fl_str_mv https://repositorio.ufba.br/bitstream/ri/3843/1/a31v31n4.pdf
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