| Registro completo |
| Provedor de dados: |
Neotropical Ichthyology
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| País: |
Brazil
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| Título: |
Comparative characterization of digestive proteases in redhead cichlid (Vieja melanurus) and twoband cichlid (Vieja bifasciata) (Percoidei: Cichlidae)
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| Autores: |
Frías-Quintana,Carlos Alfonso
Peña-Marín,Emyr Saul
Ramírez-Custodio,Carlos David
Martínez-García,Rafael
Jiménez-Martínez,Luis Daniel
Camarillo-Coop,Susana
Guerrero-Zárate,Rocío
Asencio-Alcudia,Gloria Gertrudys
Álvarez-González,Carlos Alfonso
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| Data: |
2021-01-01
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| Ano: |
2021
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| Palavras-chave: |
Inhibitors
PH
Proteases
Stability
Temperature
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| Resumo: |
ABSTRACT In the Southeast of Mexico, there are many native cichlids with commercial interest such as redhead cichlid (Vieja melanurus) and twoband cichlid (V. bifasciata), which have a great local demand and excellent meat quality. However, it is necessary to implement their culture based on nutrition studies and digestive biochemistry. This study’s objective was to characterize these two cichlids’ digestive proteases (pH, temperature, and inhibitors) through biochemistry techniques. Results showed that V. melanurus and V. bifasciata have a digestive capacity analogous to other omnivore fishes, where the optimal pH values of stomach proteases (4 and 2, respectively) and intestinal proteases (6 and 12, respectively), the optimal temperature of acid (35°C and 55°C, respectively) and alkaline proteases (45°C and 55°C, respectively) are quite similar. Both species presented high thermal and pH stabilities. Inhibition showed that V. melanurus is more sensitive to specific inhibitors for alkaline proteases than V. bifasciata. In conclusion, V. bisfasciata and V. melanurus have different digestive protease patterns. Both species can hydrolyze different protein ingredients to formulate a specific diet. Nevertheless, V. bifasciata is more resistant to the presence of inhibitors, which allow it to include vegetable proteins in its diet.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252021000100210
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| Editor: |
Sociedade Brasileira de Ictiologia
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| Relação: |
10.1590/1982-0224-2020-0095
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| Formato: |
text/html
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| Fonte: |
Neotropical Ichthyology v.19 n.1 2021
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| Direitos: |
info:eu-repo/semantics/openAccess
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