Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella sp
Autor(a) principal: | |
---|---|
Data de Publicação: | 2022 |
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/10400.13/4072 |
Resumo: | In this research, a new type of biodegradable film based on the extracellular polymeric substances (EPS) and isolated from the thermophilic microalga Graesiella sp., was formulated and characterized. The EPS film was 0.221 mm thick. Atomic force microscopy and scanning electron microscopy images revealed a homogeneous character with a lamellar microstructure. The EPS film displayed yellowish color, high transparency, high ul traviolet barrier properties, and low oxygen (0.008 SI), and water-vapor permeability (0.037 SI). Film tensile strength (16.24 MPa) and elongation at break (4.76%) were in the range of common biofilms and the thermal analyses showed high transition temperature (126 ◦C) and high thermal stability (up to 800 ◦C). Compared to ascorbic acid, results indicated that the EPS film shows a higher antioxidant activity, mainly as β-carotene anti bleaching (84%), DPPH- free radical scavenging ability (80%), and ferrous iron-chelating (55%). Graesiella sp., EPS film effects on beef meat packaging were studied during nine days of cold storage. Compared to polyvinylchloride-packed meat, EPS-packed meat samples showed higher stability of color (redness = 13.6) and pH (5.85) during storage and low proliferation of total viable counts (4.04 CFU⋅g− 1 ) and Pseudomonas bacteria (4.09 CFU⋅g− 1 ). They also exhibit lower drip loss (9%) and less metmyoglobin (32%), heme iron (4.87 μg⋅g− 1 ) total volatile basic nitrogen (TVB-N = 22.96 mg⋅kg− 1 ), and lipid oxidation (MDA = 0.025 mg⋅kg− 1 ). The obtained results highlight the potential for use of microalgae EPS as a new film forming material that could be applied in beef meat preservation. |
id |
RCAP_35f33e90a0dceb7263443877ba0e8a04 |
---|---|
oai_identifier_str |
oai:digituma.uma.pt:10400.13/4072 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella spGraesiella sp.EPS filmPhysicochemical propertiesAntioxidantMeat shelf life.Faculdade de Ciências Exatas e da EngenhariaIn this research, a new type of biodegradable film based on the extracellular polymeric substances (EPS) and isolated from the thermophilic microalga Graesiella sp., was formulated and characterized. The EPS film was 0.221 mm thick. Atomic force microscopy and scanning electron microscopy images revealed a homogeneous character with a lamellar microstructure. The EPS film displayed yellowish color, high transparency, high ul traviolet barrier properties, and low oxygen (0.008 SI), and water-vapor permeability (0.037 SI). Film tensile strength (16.24 MPa) and elongation at break (4.76%) were in the range of common biofilms and the thermal analyses showed high transition temperature (126 ◦C) and high thermal stability (up to 800 ◦C). Compared to ascorbic acid, results indicated that the EPS film shows a higher antioxidant activity, mainly as β-carotene anti bleaching (84%), DPPH- free radical scavenging ability (80%), and ferrous iron-chelating (55%). Graesiella sp., EPS film effects on beef meat packaging were studied during nine days of cold storage. Compared to polyvinylchloride-packed meat, EPS-packed meat samples showed higher stability of color (redness = 13.6) and pH (5.85) during storage and low proliferation of total viable counts (4.04 CFU⋅g− 1 ) and Pseudomonas bacteria (4.09 CFU⋅g− 1 ). They also exhibit lower drip loss (9%) and less metmyoglobin (32%), heme iron (4.87 μg⋅g− 1 ) total volatile basic nitrogen (TVB-N = 22.96 mg⋅kg− 1 ), and lipid oxidation (MDA = 0.025 mg⋅kg− 1 ). The obtained results highlight the potential for use of microalgae EPS as a new film forming material that could be applied in beef meat preservation.DigitUMaGongi, WejdenePinchetti, Juan Luis GómezCordeiro, NereidaSadok, SalouaOuada, Hatem Ben2022-02-10T11:11:50Z2022-01-01T00:00:00Z2022-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.13/4072engGongi, W., Pinchetti, J. L. G., Cordeiro, N., Sadok, S., & Ouada, H. B. (2021). Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella sp. Algal Research, 102565.10.1016/j.algal.2021.102565info: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:RCAAP2022-09-05T12:57:13Zoai:digituma.uma.pt:10400.13/4072Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:07:53.791240Repositório 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 |
Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella sp |
title |
Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella sp |
spellingShingle |
Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella sp Gongi, Wejdene Graesiella sp. EPS film Physicochemical properties Antioxidant Meat shelf life . Faculdade de Ciências Exatas e da Engenharia |
title_short |
Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella sp |
title_full |
Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella sp |
title_fullStr |
Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella sp |
title_full_unstemmed |
Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella sp |
title_sort |
Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella sp |
author |
Gongi, Wejdene |
author_facet |
Gongi, Wejdene Pinchetti, Juan Luis Gómez Cordeiro, Nereida Sadok, Saloua Ouada, Hatem Ben |
author_role |
author |
author2 |
Pinchetti, Juan Luis Gómez Cordeiro, Nereida Sadok, Saloua Ouada, Hatem Ben |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
DigitUMa |
dc.contributor.author.fl_str_mv |
Gongi, Wejdene Pinchetti, Juan Luis Gómez Cordeiro, Nereida Sadok, Saloua Ouada, Hatem Ben |
dc.subject.por.fl_str_mv |
Graesiella sp. EPS film Physicochemical properties Antioxidant Meat shelf life . Faculdade de Ciências Exatas e da Engenharia |
topic |
Graesiella sp. EPS film Physicochemical properties Antioxidant Meat shelf life . Faculdade de Ciências Exatas e da Engenharia |
description |
In this research, a new type of biodegradable film based on the extracellular polymeric substances (EPS) and isolated from the thermophilic microalga Graesiella sp., was formulated and characterized. The EPS film was 0.221 mm thick. Atomic force microscopy and scanning electron microscopy images revealed a homogeneous character with a lamellar microstructure. The EPS film displayed yellowish color, high transparency, high ul traviolet barrier properties, and low oxygen (0.008 SI), and water-vapor permeability (0.037 SI). Film tensile strength (16.24 MPa) and elongation at break (4.76%) were in the range of common biofilms and the thermal analyses showed high transition temperature (126 ◦C) and high thermal stability (up to 800 ◦C). Compared to ascorbic acid, results indicated that the EPS film shows a higher antioxidant activity, mainly as β-carotene anti bleaching (84%), DPPH- free radical scavenging ability (80%), and ferrous iron-chelating (55%). Graesiella sp., EPS film effects on beef meat packaging were studied during nine days of cold storage. Compared to polyvinylchloride-packed meat, EPS-packed meat samples showed higher stability of color (redness = 13.6) and pH (5.85) during storage and low proliferation of total viable counts (4.04 CFU⋅g− 1 ) and Pseudomonas bacteria (4.09 CFU⋅g− 1 ). They also exhibit lower drip loss (9%) and less metmyoglobin (32%), heme iron (4.87 μg⋅g− 1 ) total volatile basic nitrogen (TVB-N = 22.96 mg⋅kg− 1 ), and lipid oxidation (MDA = 0.025 mg⋅kg− 1 ). The obtained results highlight the potential for use of microalgae EPS as a new film forming material that could be applied in beef meat preservation. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-02-10T11:11:50Z 2022-01-01T00:00:00Z 2022-01-01T00:00:00Z |
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/10400.13/4072 |
url |
http://hdl.handle.net/10400.13/4072 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Gongi, W., Pinchetti, J. L. G., Cordeiro, N., Sadok, S., & Ouada, H. B. (2021). Characterization of biodegradable films based on extracellular polymeric substances extracted from the thermophilic microalga Graesiella sp. Algal Research, 102565. 10.1016/j.algal.2021.102565 |
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.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 |
|
_version_ |
1799129947499921408 |