Published

2014-01-01

Physicochemical Evaluation of Cachama Fillets (Piaractus brachypomus) Preserved with Propolis during Storage

Evaluación Fisicoquímica de Filetes de Cachama (Piaractus brachypomus) Preservados con Propóleos durante el Almacenamiento

Keywords:

Biopreservation, fish, ethanol extracts, antioxidant. (en)
Bioconservación, pescado, extractos etanólicos, antioxidante. (es)

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Authors

  • Héctor Suárez Mahecha Universidad Nacional de Colombia - Sede Bogotá - Instituto de Ciencia y Tecnología de Alimentos - ICTA
  • Álvaro Jiménez Toquica Universidad Nacional de Colombia
  • Amanda Consuelo Díaz Moreno Universidad Nacional de Colombia - Sede Bogotá - Instituto de Ciencia y Tecnología de Alimentos - ICTA
The bioactive compounds that propolis contains present diverse components that can diminish the deterioration of compounds such as fat and certain microorganisms that can affect fish fillets during refrigerated storage. The aim of this study was to evaluate the preserving capacity of ethanol extracts of propolis (EEP) in cachama fish fillets (Piaractus brachypomus). The treatments carried out were: (1) ethyl alcohol (96%) as the control; (2) 0.8% EEP; (3) 1.2% EEP; and (4) liquid smoke. Analyses were carried out for total volatile base nitrogen (TVBN), thiobarbituric acid reactive species-TBARS, pH and water loss for 0, 8, 16 and 24 days of storage at 4 ºC with vacuum packaging. The results presented the highest values of the TBARS and TVBN analyses for the liquid smoke treatment and the lowest values for the EEP treatments, demonstrating a significant difference between the treatments (P<0.05); however, the best water retention capacity was seen in the fillets treated with liquid smoke. The results for pH did not present significant differences between the treatments (P>0.05) during the storage period. The results suggest that EEP can preserve physicochemical characteristics during the shelf life of refrigerated, vacuum packed cachama fillets.

Los compuestos bioactivos contenidos en propóleos presentan diversos componentes, que pueden disminuir el deterioro de compuestos como la grasa, y la cantidad de ciertos microorganismos, que pueden afectar filetes de pescado durante el almacenamiento bajo refrigeración. El objetivo de este trabajo fue evaluar la capacidad conservante de extractos etanólicos de propóleos (EEP) sobre filetes del pescado cachama (Piaractus brachypomus). Los tratamientos realizados fueron: (1) alcohol etílico (96%) como control; (2) EEP 0,8%; (3) EEP 1,2% y (4) humo líquido. Fueron realizados análisis para bases volátiles totales (BVTN), especies reactivas al ácido tiobarbitúrico-TBARS, pH y pérdida de agua durante los días 0, 8, 16 y 24 de almacenamiento a 4 ºC en empaque al vacío. Los resultados presentan los mayores valores para el análisis de TBARS y BVTN en el tratamiento con humo líquido y los menores valores para los tratamientos con EEP, mostrando diferencia significativa entre tratamientos (P<0,05); sin embargo, la mejor capacidad de retención de agua fue para los filetes de cachama tratados con humo líquido. El pH no presentó diferencias significativas entre tratamientos (P>0,05) durante el periodo de almacenamiento. Los resultados sugieren que los EEP podrían preservar las características fisicoquímicas durante el tiempo de vida útil de filetes de cachama en empaque al vacío bajo refrigeración.

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