1. Optimization of vacuum coating conditions to improve oil retention in trout feed
- Author
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Philippe Evon, Carlos Alburez Tercero, Asma Chaabani, Vanessa Durrieu, Fabien Skiba, Laurent Labonne, Antoine Rouilly, Jean-Pierre Picard, Catherine Advenier, Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut National de la Recherche Agronomique - INRA (FRANCE), Groupe Coopératif Maïsadour (FRANCE), Nutricia (FRANCE), Chimie Agro-Industrielle (CAI), Ecole nationale supérieure des ingénieurs en arts chimiques et technologiques-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and Aqualia (FRANCE)
- Subjects
0106 biological sciences ,Vacuum level ,Materials science ,High fat content ,Pellets ,Ingénierie des aliments ,Aquatic Science ,engineering.material ,01 natural sciences ,Extruded fish feed Vacuum coater ,Oil leakage rate ,Coating ,[SDV.IDA]Life Sciences [q-bio]/Food engineering ,[SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] ,Composite material ,Leakage (electronics) ,Atmospheric pressure ,biology ,010604 marine biology & hydrobiology ,04 agricultural and veterinary sciences ,Science des productions animales ,biology.organism_classification ,Durability ,Trout ,[SDV.SA.SPA]Life Sciences [q-bio]/Agricultural sciences/Animal production studies ,Alimentation et Nutrition ,040102 fisheries ,engineering ,0401 agriculture, forestry, and fisheries ,Mécanique des matériaux ,[SDV.AEN]Life Sciences [q-bio]/Food and Nutrition ,Vacuum coating - Abstract
International audience; 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.
- Published
- 2020
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