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 | Acesso ao texto completo restrito à biblioteca da Embrapa Alimentos e Territórios. Para informações adicionais entre em contato com mara.petrocchi@embrapa.br. |
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Biblioteca(s): |
Embrapa Alimentos e Territórios. |
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Data corrente: |
10/12/2024 |
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Data da última atualização: |
10/12/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BAPTISTA, R. C.; OLIVEIRA, R. B. A.; CÂMARA JR, A. A.; LANG, É.; SANTOS, J. L. P. DOS; PAVANI, M.; GUERREIRO, T. M.; CATHARINO, R. R.; ALVES FILHO, E. G.; RODRIGUES, S.; BRITO, E. S. de; ALVARENGA, V. O.; BICCA, G. B.; SANT'ANA, A. S. |
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Afiliação: |
RAFAELA C. BAPTISTA, UNIVERSIDADE DE CAMPINAS; RODRIGO B. A. OLIVEIRA, UNIVERSIDADE FEDERAL FLUMINENSE; ANTONIO A. CÂMARA JR, UNIVERSIDADE DE CAMPINAS; ÉMILIE LANG, UNIVERSIDADE DE CAMPINAS; JULIANA L. P. DOS SANTOS, UNIVERSIDADE DE CAMPINAS; MATHEUS PAVANI, UNIVERSIDADE DE CAMPINAS; TATIANE M. GUERREIRO, UNIVERSIDADE DE CAMPINAS; RODRIGO R. CATHARINO, UNIVERSIDADE DE CAMPINAS; ELENILSON GODOY ALVES FILHO, UNIVERSIDADE FEDERAL DO CEARÁ; SUELI RODRIGUES, UNIVERSIDADE FEDERAL DO CEARÁ; EDY SOUSA DE BRITO, CNAT; VERÔNICA O. ALVARENGA, UNIVERSIDADE FEDERAL DE MINAS GERAIS; GERSON B. BICCA, UNIVERSIDADE DE RONDÔNIA; ANDERSON S. SANT'ANA, UNIVERSIDADE DE CAMPINAS. |
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Título: |
Chilled Pacu (Piaractus mesopotamicus) fillets: Modeling Pseudomonas spp. and psychrotrophic bacteria growth and monitoring spoilage indicators by 1H NMR and GC–MS during storage. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
International Journal of Food Microbiology, v. 415, 2024, 110645. |
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Páginas: |
10 p. |
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DOI: |
https://doi.org/10.1016/j.ijfoodmicro.2024.110645 |
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Idioma: |
Inglês |
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Conteúdo: |
This study aimed to assess the growth of Pseudomonas spp. and psychrotrophic bacteria in chilled Pacu (Piaractus mesopotamicus), a native South American fish, stored under chilling conditions (0 to 10 °C) through the use of predictive models under isothermal and non-isothermal conditions. Growth kinetic parameters, maximum growth rate (μmax, 1/h), lag time (tLag, h), and (Nmax, Log10 CFU/g) were estimated using the Baranyi and Roberts microbial growth model. Both kinetic parameters, growth rate and lag time, were significantly influenced by temperature (P < 0.05). The square root secondary model was used to describe the bacteria growth as a function of temperature. Secondary models, √μ = 0.016 (T + 10.13) and √μ =0.017 (T + 9.91) presented a linear correlation with R2 values >0.97 and were further validated under non-isothermal conditions. The model's performance was considered acceptable to predict the growth of Pseudomonas spp. and psychrotrophic bacteria in refrigerated Pacu fillets with bias and accuracy factors between 1.24 and 1.49 (fail-safe) and 1.45–1.49, respectively. Fish biomarkers and spoilage indicators were assessed during storage at 0, 4, and 10 °C. Volatile organic compounds, VOCs (1-hexanol, nonanal, octenol, and indicators 2-ethyl-1-hexanol) showed different behavior with storage time (P > 0.05). 1H NMR analysis confirmed increased enzymatic and microbial activity in Pacu fillets stored at 10 °C compared to 0 °C. The developed and validated models obtained in this study can be used as a tool for decision-making on the shelf-life and quality of refrigerated Pacu fillets stored under dynamic conditions from 0 to 10 °C. MenosThis study aimed to assess the growth of Pseudomonas spp. and psychrotrophic bacteria in chilled Pacu (Piaractus mesopotamicus), a native South American fish, stored under chilling conditions (0 to 10 °C) through the use of predictive models under isothermal and non-isothermal conditions. Growth kinetic parameters, maximum growth rate (μmax, 1/h), lag time (tLag, h), and (Nmax, Log10 CFU/g) were estimated using the Baranyi and Roberts microbial growth model. Both kinetic parameters, growth rate and lag time, were significantly influenced by temperature (P < 0.05). The square root secondary model was used to describe the bacteria growth as a function of temperature. Secondary models, √μ = 0.016 (T + 10.13) and √μ =0.017 (T + 9.91) presented a linear correlation with R2 values >0.97 and were further validated under non-isothermal conditions. The model's performance was considered acceptable to predict the growth of Pseudomonas spp. and psychrotrophic bacteria in refrigerated Pacu fillets with bias and accuracy factors between 1.24 and 1.49 (fail-safe) and 1.45–1.49, respectively. Fish biomarkers and spoilage indicators were assessed during storage at 0, 4, and 10 °C. Volatile organic compounds, VOCs (1-hexanol, nonanal, octenol, and indicators 2-ethyl-1-hexanol) showed different behavior with storage time (P > 0.05). 1H NMR analysis confirmed increased enzymatic and microbial activity in Pacu fillets stored at 10 °C compared to 0 °C. The developed and validated models obtained... Mostrar Tudo |
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Palavras-Chave: |
Chilling; Shelf-life. |
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Thesaurus Nal: |
Biomarkers; Freshwater fish; Predictive microbiology; Spoilage. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
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Registro original: |
Embrapa Alimentos e Territórios (CNAT) |
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| Registros recuperados : 1 | |
| 1. |  | MENDES, G. A.; ROCHA JÚNIOR, V. R.; RUAS, J. R. M.; SILVA, F. V.; CALDEIRA, L. A.; PEREIRA, M. E. G.; SOARES, F. D. dos S.; PIRES, D. A. de A. Características de carcaça e qualidade da carne de novilhas alimentadas com silagem de capim-marandu. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 47, n. 12, p. 1774-1781, dez. 2012. Título em inglês: Carcass characteristics and meat quality of heifers fed marandu grass silage.| Biblioteca(s): Embrapa Unidades Centrais. |
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