Canning and Fish Packaging Technology

Unit 3 - Unit operations in canning

3.1.4.2.Vegetable oils
For canning different types of fish, vegetable oil is used as filling medium. Vegetable oil is also used in preparation of filling medium for canning. Refined cottonseed oil, groundnut oil, sunflower oil and soybean oil are primarily used.

Quality of oil used for canning,

• Free from moisture content is suitable.
• Specific gravity should be between 0.9-0.92.
• The oil should have less of unsaturated (iodine value should be less) fatty acids.