Rapeseed oil is a common edible oil, which is extracted from rapeseed by pressing or leaching. So, which is better for canola oil pressing or leaching?In this paper, we will analyze and compare these two extraction methods from different perspectives.
First of all, from the perspective of oil quality, high-quality rapeseed oil can be obtained by pressing and leaching. Pressing separates the oil from rapeseed by physical force and does not require the use of any chemical solvents, so the rapeseed oil obtained by pressing is more natural and pure. Leaching, on the other hand, uses solvents to dissolve the oil in rapeseed and obtain oil after distillation and desolvation. Although chemical solvents are used in the leaching process, the scientifically treated rapeseed oil also meets the food standards. Therefore, in terms of oil quality, rapeseed oil obtained by pressing and leaching can meet the needs of most consumers.
Secondly, in terms of yield and efficiency, pressing is more efficient than leaching. The process of pressing is relatively simple, just put the rapeseed into the press for pressing, and there is no need for complex processing steps. Leaching, on the other hand, requires rapeseed to be in full contact with the solvent, followed by multiple steps such as distillation and desolvation, and the process is relatively complex. As a result, rapeseed oil can be extracted more quickly by pressing and yields are relatively high. For companies that produce on a large scale, pressing is a more economical and efficient option.
In addition, crushing is more environmentally friendly in terms of energy consumption and environmental impact. There is no need to use chemical solvents in the pressing process, which reduces environmental pollution. The chemical solvents used in the leaching process need to be treated and may have a certain impact on the environment if not properly handled. At the same time, the energy consumption of the crushing is relatively low, which can save energy resources.
However, leaching also has its advantages. Leaching extracts more oil from rapeseed and loses less oil than pressing. In addition, leaching can extract some oil components that cannot be obtained during the pressing process, so that the rapeseed oil obtained by leaching is richer in terms of nutritional value.
In summary, both pressing and leaching have their own unique advantages and application scenarios. If you are looking for natural purity, high efficiency and environmental friendliness, pressing is a better choice;If higher oil extraction rates and nutritional value are desired, leaching is a better choice. According to the actual demand and production scale, the appropriate extraction method can be selected to prepare rapeseed oil.