Production of vegetable oils from sunflower seeds results in high energy content by-products, namely, meal and Sunflower cake, which are actively used in the livestock industry as a source of high-calorie proteins in animal feed. Sometimes, people often mistake sunflower cake for meal, and vice versa, so there is a slight confusion about the terminology.
Meal and sunflower cake differ in terms of how the oil is extracted. Depending on this, we get a processed by-product such as a meal or an sunflower cake.
When oil is pressed from sunflower, rapeseed, or flax seeds, we get a cake which is a high residual fat content of 8–12%. It looks like pressed plates. As for storage, the best way to store sunflower cake is to keep it in low heaps. Due to the high-fat content and improper storage conditions, the oilcake may become bitter, and it may get an unpleasant odor and self-heating.
Sunflower meal is obtained by extracting oil with organic solvents, which are then removed using steam. In this case, the least amount of fat -1-2% remains in the product, but the content of micronutrients and proteins is much higher than in the sunflower cake. At the same time, the sunflower meal is stored longer in granular form than the sunflower cake.