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  • Food fish  (4)
  • Cell & Developmental Biology
  • Fisheries
  • General Chemistry
  • INP (Ecuador)  (6)
  • 2005-2009  (6)
  • 1975-1979
  • 1950-1954
  • 1
    Publication Date: 2021-05-19
    Description: Este trabajo se planteó estimar los costos de producción para la elaboración de galletas enriquecidas con proteínas de pescado. Fijar un precio justo desde el punto de vista del Estado y el empresario, y estimar el costo total de un contrato para alimentar a 40,000 niños en Guayaquil, durante 120 días escolares. La ración por niño 36 g.
    Description: Published
    Keywords: Cost analysis ; Dried products ; Food fish ; Cost analysis ; Dried products
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 2
    Publication Date: 2021-05-19
    Description: Previous work has established the technical feasibility of producing acceptable shark-base fish biscuits, which were subsequently used for a school breakfast programme in the poorer areas of Ecuador. However, reformulation of the biscuits using chaeper pelagic fish resources (sardine, mackerel and tuna dark meat) was necessary due to changes in the cost and availability of shark. This paper describes a datailed examination of the organoleptic quality of the pelagic-fish based biscuits, and the results of acceptability test undertaken with children attending 3 schools in the marginal areas of Guayaquil. For the first part, 5 panelists selected from staff at Instituto Nacional de Pesca, rated each of the 3 types of biscuit using 5 rating scale describing texture, colour, rancidity, fish-flavour and hedonic rating. For the second part, a pilot study with 120 children was undertaken. A further 292 children received biscuits in a main study. The children were aged between 4 and 14 years. Each child received one type of biscuit and indicated whether or not they liked it. Acceptability rates were calculated as the percentage of children indicating a liking for the biscuits. The taste panel results indicated that there were only slight differences between the sardine and mackerel biscuits. Both were softer, of a lighter colour, had a weaker fish flavour and were rated a being less racing than the tuna biscuits, which were liked the least by the taste panel. The overall acceptability indicated by the shcool children was high, ranging from 75% (tuna) to 97% (sardine) in the pilot test, and 73% (mackerel) to 86% (tuna) in the main study. A commercial non-fish biscuit tested at the same time was liked by 100% of the children. There was some evince to suggest that older children were more discriminating, indicating a stronger dislike for the tuna biscuit in the pilot study than the younger respondents.
    Description: Published
    Keywords: Fishery products ; Pelagic fisheries ; Dried products ; Fishery products ; Pelagic fisheries ; Dried products ; Food fish ; Acceptance tests
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 3
    Publication Date: 2021-05-19
    Description: Varias pruebas experimentales de galletas enriquecidas con carne cocida y molida de sardina (Sardinops sagax), macarela (Scomber japonicus) y atún (Thunnus spp.) fueron satisfactoriamente logradas utilizando la formulación que se desarrolló anteriormente para productos enriquecidos con carne de tiburón. Se elaboró carne cocida molida, con altos rendimientos, de materias primas relativamente baratas, haciendo los productos potencialmente mucho más económicos que las galletas enriquecidas con carne de tiburón. Ensayos en mayor escala sobre la producción de carne de pescado son necesarias para establecer un óptimo método de producción y selección de las maquinarias que se requieren antes de iniciar una producción comercial. Carne molida y cocinada de pescados pelágicos pueden sustituir la carne de tiburón, sin causar problemas en la elaboración de las galletas. El contenido de proteína de las galletas que se elaboraron es poco menor que las enriquecidas con carne de tiburón; en cambio en lo referente a la grasa, su contenido es mayor. Debido a la relativa facilidad de obtención de la carne oscura de atún, cocinada y desmenuzada, ésta es recomendada para los ensayos de mayor escala. El uso de macarela y sardina es una alternativa, cuando no haya suficiente disponibilidad de carne oscura de atún.
    Description: Published
    Keywords: Fishery products ; Pelagic fisheries ; Dried products ; Fishery products ; Pelagic fisheries ; Dried products ; Food fish
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 4
    Publication Date: 2021-05-19
    Description: El presente trabajo llama la atención a las recientes epidemias de intoxicación histamínicas reportadas en los Estados Unidos, debido al consumo del dorado (Coryphaena hippurus) o Mahi-Mah, contaminado. Esto dió como resultado la prohición de las importaciones de esta especie, proveniente de varios países entre ellos el Ecuador, y siendo el dorado una especie de relativa importancia económica en este país, dicha prohibición ha preocupado al sector pesquero. Los estudios llevados a cabo muestran claramente la susceptibilidad de esta especie a desarrollar histamina. Esto se debe principalmente a la temperatura a la que está expuesta, pues la demora antes de enhielar el pescado es la etapa crítica. Los resultados muestran un aumento exponencial de los niveles de histamina, en ciertos casos después de tan solo 9 horas de almacenaje a temperaturas ambientales entre 25-30°C. Los niveles de histamina en pescado muestreado en el mercado local fueron tan altos como 250 mg/100g de muestra. Se demuestra que el problema se debe fundamentalmente al mal manejo de la captura por parte de la flota artesanal, y la subsecuente falta de infraestructura adecuada para conservarla, es decir, no se enfría el pescado. Sin embargo, el estudio muestra que una reducción de la temperatura del pescado de solo 15° menos, podría dar como resultado un producto de mayor calidad. En el presente trabajo se hacen recomendaciones para establecer un nivel máximo permitido para la exportación de 10 mg%, y se comparan dos métodos rápidos de análisis.
    Description: Published
    Keywords: Fisheries ; Histamines ; Quality control ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 5
    Publication Date: 2021-05-19
    Description: This paper describes a simple method of producing a protein-enriched sweet biscuit, shown to be popular with young children, by adding cooked minced shark flesh and soya flour to a slightly modified biscuit formulation. The biscuit can be manufactured on standard production equipment at a cost which renders it ideal for use in institutional feeding programmes, the product´s extended shelf life being an additional advantage, especially in remote rural areas. Acceptability tests were carried out amongst 1,750 school children in poor communities both in the Andes and in Guayaquil. The children were fed biscuits (12,35 g) per day, of wich an average of 96,7% in Guayaquil and 99% in the Andean areas were consumed immediately. Acceptance was high and fishy flavours were hardly noticed. The cost of the biscuit delivered to a warehouse in Guayaquil is estimated at S/.88.-per kg (approximately US (0,88 per kg). Chemical analysis shows a crude protein content of 18 to 20% compared with 7 to 8% in a normal sweet biscuit, while the true protein content is estimated to be 17%. The calorific value is about 4,750 cals per gram.
    Description: Published
    Keywords: Dried products ; Acceptability ; Processing fishery products ; Dried products ; Food fish ; Acceptability
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 6
    Publication Date: 2021-05-19
    Description: 153 experimental sets were made with stackable Antillean fish traps in depths of 5 to 30 m in the waters around the Galápagos Island (Ecuador), between Octobre and April 1983. 1,885 fish were caught of 18 species mainly of the families Pomadasyidae, Acanthuridae, Sparidae and Serranidae. The mean catch rate was 5,5 Kg per lift or 0,4 Kg.h-1, and the mean weight of the fish caught was 0,45 Kg. The optimum set duration was found to be between 2 and 18 hours (possibly indicating a high rate of escape). This study took place during the period of the ”El Niño”, when catches of fish in this area generally were low, and it is not known what effect this had. The catches were good compared with other shallow areas, but the fishes caught were mainly of medium quality. It is thought that significant increases in the quantity and quality of the catch could be obtained with commercial traps in deeper areas, but the efficient use of these would require new vessels and equipment, and the resulting increase in fishing effort could lead to overfishing of the most acceptable species of reef fish. Hence the development of fishery using fish traps is not recommended for Galápagos. A study of the biology of the fish caught was carried out. A bibliography of references on fish traps and their use was compiled and is included.
    Description: Published
    Keywords: Fisheries ; Trap fishing ; Fisheries ; Catch statistics ; Trap fishing
    Repository Name: AquaDocs
    Type: Journal Contribution
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