If want to know how much sunflower oil can be extracted from one liter of sunflower seeds, first of all, we need to know the oil content of sunflower seeds, different varieties have different oil content, we usually divide sunflower seeds into two kinds, oil sunflower seeds and edible sunflower seeds.
Oil sunflower seeds have higher oil content (45%-54%), its seeds are shorter and smaller, the pericarp is mostly black, the skin is thin, about 20%-30% of the weight of the seed, and the weight of 1,000 grains is 40-110 grams.
Edible sunflower seeds have lower oil content (22%-35%), its seeds are longer, the pericarp black and white stripes account for most of the pericarp, thick skin, about more than 40% of the weight of the seed, 1,000 grains weigh 100~200 grams.
Different varieties of sunflower seeds with the same weight will produce different weights of oil because of their different oil contents. In addition to the effect of oil content, there is another factor that has a greater impact on the rate, that is, the way the oil is extracted, there are usually two common ways in the industry, physical pressing and solvent extraction.
Single sunflower oil press machine than large sunflower oil extraction line to extract less oil, because the sunflower seeds after cleaning, peeling, flaking, cooking and a series of pre-treatment, the temperature of the oilseeds, humidity, granularity and so on will reach the best state of the oil, and then physical pressing can be more oil, or even twice as much as the stand-alone machine. But after physical pressing of sunflower seed cake still has a lot of oil residue, large oil presses will choose to further extract the residual oil in the cake after pressing, at this time it will use the solvent leaching equipment to get oil. Solvent leaching equipment can make the lowest oil residue, after leaching equipment to extract oil, sunflower meal in the residual oil rate of less than 1%.
Therefore, to extract about one liter of oil from sunflower seeds by solvent extraction method, 1.8 kg of sunflower seeds are needed, and 2.3 kg of sunflower seeds are needed by single physical pressing method, or more.
Of course, there are many other factors that affect the oil, you want to know more about oil and grease welcome to consult the Siwei oil engineering, we are professional, will answer your questions.
