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

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...

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Bibliographic Details
Published in:Aquacultural engineering 2020-11, Vol.91, p.1-14
Main Authors: Chaabani, Asma, Labonne, Laurent, Alburez Tercero, Carlos, Picard, Jean-Pierre, Advenier, Catherine, Durrieu, Vanessa, Rouilly, Antoine, Skiba, Fabien, Evon, Philippe
Format: Article
Language:English
Subjects:
Agricultural sciences
Animal production studies
Engineering Sciences
Food and Nutrition
Food engineering
Life Sciences
Mechanics
Mechanics of materials
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Summary: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.
ISSN:0144-8609
DOI:10.1016/j.aquaeng.2020.102127!