Table of Contents
- Expeller Pressed Process
- Expeller Processed Oil vs. Cold Pressed Oil
- Common Oil Form in Market
- Kinds of Oil that are Expeller Pressed
- Common Questions
When it comes to oil, it’s hard to know exactly what you are having. Oils are manufactured in several different ways. Some are expelled using solvents such as hexane. Some are squeezed by an expeller using a mechanical press that physically squeezes the oil out.
It is not always specifically labeled how oil is extracted either. The descriptors are often in the title, often in abbreviated form. Sometimes it is in the description on the spec sheet only.
We have also discovered that certain suppliers are not so professional in quality control. So, you can often find no mention of how the oil is produced on any documents. It will be in your hands to ensure that you ask the right questions and get the correct documentation.
Expeller Pressed Process
Expeller Pressed vegetable oil is made by a press to physically force the oil out of the seed. With this procedure, no solvents or acids are used in the process, so there is no risk of any hexane residue left over.
It involves a screw-style machine that presses oil through a caged barrel-like cavity, using friction and continuous pressure.
The screw drives forward to basically squeeze the oil from the compressed seeds. In this process, there is no added heat. However, the pressure and friction involved in the pressing process produced heat within the range of 140-210 Degree F from the device. So, this process is not cold pressed scientifically.
The residual seed solids are left over after the oil is removed, forming a hardened cake that is removed. It is later sold as a meal for animal feed. Pressing the expeller brings 87-95% of the oil out of the seed. So, after pressing, some oil is still leftover. Some people claim as little as 65 percent is removed, so this is debated.
This choice is also not the cheapest option. This may make this oil more costly than the expelled solvent form.
Using the same method as mentioned above, Expeller pressed oil is usually refined. It is also known as RBD. Additional steam heat and the use of natural earthen bleaching clay are involved in this refining process.
Expeller Processed Oil vs. Cold Pressed Oil
When you see a handful of different options with the words cold-pressed and expeller-pressed on the packaging, you walk your cart over to the baking aisle and find yourself confused. You know you need a cold-press, but is that the same thing as an expeller-press?
Expeller Processed Oil
It is a mechanism that presses seeds and nuts into a cavity. It uses extreme friction and pressure to remove oil is an expeller press or screw press. There is no added heat during this process. Since, the seeds are pressed using friction; heat is produced (around 140-210 degrees F). The oil is extracted until the seeds are pressed.
The seeds usually stay in the press to form a hard brick that can be used as animal feed later on.
When pressing the expeller, a large number of nuts or seeds are required to produce a high yield. It requires more cash. This is one of the key reasons why oil producers are not interested in using this extraction process. They use methods that require chemicals and high heat instead.
Cold Pressed Oil
Less heat is used when seeds or other ingredients are pressed to produce cold-pressed oils using an oilseed press. To obtain the oil, the seeds or ingredients are put in the press and then crushed by the machine. Usually, they are at a much lower temperature (122 degrees F) relative to an expeller press when these ingredients are pressed.
Common Oil Form in Market
Solvent-expelled vegetable oils are the most popular in today’s industry. Some oils on the bottle or the ingredient label do not specifically state expeller pressed or cold-pressed. You may presume that they are expelled by solvents.
The next most widely discovered is Expeller pressed oil. However, the market percentage is minuscule in comparison to solvent expelled oils.
It is most commonly seen with sunflower, safflower, canola, or soybean oil with a non-GMO variety of seeds. It is also found in traditional oils as well.
Conventional GMO vegetable oil that is still pressed by the expeller, for example, can be found.
In the retail industry, cold-pressed oils are most frequently used. They are most often marketed only as non-GMO or organic types.
If you were going to pay for the health benefits of cold-pressed oil, you are probably the same sort of customer who would just choose to purchase organic or non-GMO oils. There are much lesser prices.
Kinds of Oil that are Expeller Pressed
There are a few different types of canola oil that can be pressed by an expeller: Non-GMO canola oil and standard canola oil (also known as traditional or GMO) are the most common. If the oil is derived from GMO or non-GMO seeds is denoted by these names. Either way, the same expeller-pressed methods are used to produce these oils, but it is just the form of seed that is different.
Expeller pressed vegetable oil would be your best choice when looking for the best cooking oils to be used at higher temperatures.
They are also better than eating processed oils. These oils undergo processes that require high temperatures, chemicals, high pressure, and deodorization. Although, these techniques are somewhat similar.
Is expeller-pressed vegetable oil healthy?
A different story is high oleic expeller pressed sunflower oil. It has higher amounts of monounsaturated fat than olive oil. This is pressed by the expeller by not using a chemical solvent. In contrast to other choices, this one is actually very safe for you.
Is expeller pressed oil better for you?
Expeller pressed vegetable oil would be your best choice when looking for the best cooking oils to be used at higher temperatures. These approaches are somewhat similar. They are both better than having refined oils that undergo high-temperature, chemical, high-pressure, and deodorization processes.
What is the difference between canola oil and expeller pressed canola oil?
Expeller pressed canola oil is the oil that has been physically squeezed out of the canola plant seeds. It uses a machine known as an expeller press. Since, the expeller processing process is more time-consuming and costly, this oil comes at a premium price.
Is expeller pressed oil bad?
Pressing the expeller ensures that a machine puts a good amount of pressure on the oil extraction plants. The temperature will rise to around 500 degrees F. This is 100% healthy, and much better than the heat and drying form they use for the oils.