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Información tecnológica

versión On-line ISSN 0718-0764

Resumen

HOYOS, José L; VILLADA, Héctor S; FERNANDEZ, Alejandro  y  ORTEGA-TORO, Rodrigo. Physical Quality of Extruded Aquafeeds. Effect of Formulation and Processing Conditions. Inf. tecnol. [online]. 2017, vol.28, n.5, pp.101-114. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642017000500012.

The present work relates the traditional methods used to analyze the physical quality of fish extruded food, such as hardness, durability, water stability, sinking speed, bulk density, oil absorption and loss capacity and porosity as methods for the control of Its production at an industrial level. The physical properties of the pellets are relevant for decision making related to the conditions of processing, transport, storage, biological use of the animal and evaluation of new raw materials and additives. There are several methods for determining the physical quality of the pellets. However, they are mostly related to feeding of terrestrial animals, which are not suitable for feeding fish. These require conditions of resistance to mechanical stress and at the same time should have a texture and size that facilitates the adequate intake of food in the water.

Palabras clave : hardness; durability; sinking velocity; bulk density; porosity.

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