Properties of whey protein-based films containing organic acids and nisin to control Listeria monocytogenes
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/4259 |
Resumo: | Whey protein isolate and glycerol were mixed to form a matrix to incorporate antimicrobial agents and produce edible films with antimicrobial activity against Listeria monocytogenes strains isolated from cheeses. Various organic acids were used to decrease pH down to approximately 3. In a preliminary assay without nisin, the effect of each organic acid was evaluated with respect to the rheological properties of the film solutions and the inhibitory and mechanical properties of the films. Lactic, malic, and citric acids (3%, wt/vol), which were used in a subsequent study of their combined inhibitory effect with nisin (50 IU/ml), had significantly higher antilisterial activity (P , 0.05) compared with the control (2 N HCl, 3% [wt/vol], with nisin). The largest mean zone of inhibition was 4.00 6 0.92 mm for malic acid with nisin. Under small-amplitude oscillatory stress, the proteinglycerol- acid film solutions exhibited a predominantly viscous behavior or a weak gel behavior, with the storage modulus (G9) slightly higher than the loss modulus (G0). The malic acid–based solution was the only one whose viscosity was not influenced by the addition of nisin. The addition of nisin resulted in a nonsignificant (P . 0.05) increase in the percentage of elongation at break. Results from tensile and puncture stress were variable, but in general no significant differences were found after the incorporation of nisin. The overall results support the use of malic acid with nisin to produce effective antimicrobial films to control L. monocytogenes growth. |
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Properties of whey protein-based films containing organic acids and nisin to control Listeria monocytogeneswhey proteinedible filmsnisinorganic acidsListeria monocytogenesantimicrobial filmsWhey protein isolate and glycerol were mixed to form a matrix to incorporate antimicrobial agents and produce edible films with antimicrobial activity against Listeria monocytogenes strains isolated from cheeses. Various organic acids were used to decrease pH down to approximately 3. In a preliminary assay without nisin, the effect of each organic acid was evaluated with respect to the rheological properties of the film solutions and the inhibitory and mechanical properties of the films. Lactic, malic, and citric acids (3%, wt/vol), which were used in a subsequent study of their combined inhibitory effect with nisin (50 IU/ml), had significantly higher antilisterial activity (P , 0.05) compared with the control (2 N HCl, 3% [wt/vol], with nisin). The largest mean zone of inhibition was 4.00 6 0.92 mm for malic acid with nisin. Under small-amplitude oscillatory stress, the proteinglycerol- acid film solutions exhibited a predominantly viscous behavior or a weak gel behavior, with the storage modulus (G9) slightly higher than the loss modulus (G0). The malic acid–based solution was the only one whose viscosity was not influenced by the addition of nisin. The addition of nisin resulted in a nonsignificant (P . 0.05) increase in the percentage of elongation at break. Results from tensile and puncture stress were variable, but in general no significant differences were found after the incorporation of nisin. The overall results support the use of malic acid with nisin to produce effective antimicrobial films to control L. monocytogenes growth.International Association for Food ProtectionRepositório da Universidade de LisboaPintado, Cristina M.B.S.Ferreira, Maria A.S.S.Sousa, Isabel2012-04-20T09:10:13Z20092009-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/4259eng"Journal of Food Protection". ISSN 0362-028X. 72(9) (2009) 1891-18960362-028Xinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:35:16Zoai:www.repository.utl.pt:10400.5/4259Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:51:57.455367Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Properties of whey protein-based films containing organic acids and nisin to control Listeria monocytogenes |
title |
Properties of whey protein-based films containing organic acids and nisin to control Listeria monocytogenes |
spellingShingle |
Properties of whey protein-based films containing organic acids and nisin to control Listeria monocytogenes Pintado, Cristina M.B.S. whey protein edible films nisin organic acids Listeria monocytogenes antimicrobial films |
title_short |
Properties of whey protein-based films containing organic acids and nisin to control Listeria monocytogenes |
title_full |
Properties of whey protein-based films containing organic acids and nisin to control Listeria monocytogenes |
title_fullStr |
Properties of whey protein-based films containing organic acids and nisin to control Listeria monocytogenes |
title_full_unstemmed |
Properties of whey protein-based films containing organic acids and nisin to control Listeria monocytogenes |
title_sort |
Properties of whey protein-based films containing organic acids and nisin to control Listeria monocytogenes |
author |
Pintado, Cristina M.B.S. |
author_facet |
Pintado, Cristina M.B.S. Ferreira, Maria A.S.S. Sousa, Isabel |
author_role |
author |
author2 |
Ferreira, Maria A.S.S. Sousa, Isabel |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Pintado, Cristina M.B.S. Ferreira, Maria A.S.S. Sousa, Isabel |
dc.subject.por.fl_str_mv |
whey protein edible films nisin organic acids Listeria monocytogenes antimicrobial films |
topic |
whey protein edible films nisin organic acids Listeria monocytogenes antimicrobial films |
description |
Whey protein isolate and glycerol were mixed to form a matrix to incorporate antimicrobial agents and produce edible films with antimicrobial activity against Listeria monocytogenes strains isolated from cheeses. Various organic acids were used to decrease pH down to approximately 3. In a preliminary assay without nisin, the effect of each organic acid was evaluated with respect to the rheological properties of the film solutions and the inhibitory and mechanical properties of the films. Lactic, malic, and citric acids (3%, wt/vol), which were used in a subsequent study of their combined inhibitory effect with nisin (50 IU/ml), had significantly higher antilisterial activity (P , 0.05) compared with the control (2 N HCl, 3% [wt/vol], with nisin). The largest mean zone of inhibition was 4.00 6 0.92 mm for malic acid with nisin. Under small-amplitude oscillatory stress, the proteinglycerol- acid film solutions exhibited a predominantly viscous behavior or a weak gel behavior, with the storage modulus (G9) slightly higher than the loss modulus (G0). The malic acid–based solution was the only one whose viscosity was not influenced by the addition of nisin. The addition of nisin resulted in a nonsignificant (P . 0.05) increase in the percentage of elongation at break. Results from tensile and puncture stress were variable, but in general no significant differences were found after the incorporation of nisin. The overall results support the use of malic acid with nisin to produce effective antimicrobial films to control L. monocytogenes growth. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009 2009-01-01T00:00:00Z 2012-04-20T09:10:13Z |
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://hdl.handle.net/10400.5/4259 |
url |
http://hdl.handle.net/10400.5/4259 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Journal of Food Protection". ISSN 0362-028X. 72(9) (2009) 1891-1896 0362-028X |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
International Association for Food Protection |
publisher.none.fl_str_mv |
International Association for Food Protection |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799130996035026944 |