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Optimization of vacuum coating conditions to improve oil retention in trout feed

Chaabani, Asma and Labonne, Laurent and Alburez Tercero, Carlos and Picard, Jean-Pierre and Advenier, Catherine and Durrieu, Vanessa and Rouilly, Antoine and Skiba, Fabien and Evon, Philippe Optimization of vacuum coating conditions to improve oil retention in trout feed. (2020) Aquacultural Engineering, 91. 1-14. ISSN 0144-8609

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Official URL: https://doi.org/10.1016/j.aquaeng.2020.102127


This work describes a process approach to study the oil leakage phenomenon in feeds for large Trout. Using a pilot vacuum coater, four experimental coating parameters were studied (stirring speed, pressure, filling rate, and time needed to restore atmospheric pressure) through an experimental design. The properties measured on the coated pellets were the oil leakage rate and three other important usage properties, i.e. durability, hardness, and floatability. The coating conditions had a significant influence on oil leakage rate, varying at 40 °C from 2.7 % to 1.2 % depending on the coating conditions used. Finally, the vacuum level was the most effective factor in reducing leakage. Indeed, a progressive reduction in oil leakage rate was observed as the pressure inside the coater was reduced during coating.

Item Type:Article
HAL Id:hal-02968045
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Other partners > Groupe Coopératif Maïsadour (FRANCE)
Laboratory name:
Deposited On:06 Oct 2020 15:27

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