Canola Oil Made Of What?

Canola oil comes from the seeds of the canola plant, which is a specific cultivar of rapeseed (Brassica napus). The name “canola” stands for “Canadian oil, low acid.” Unlike traditional rapeseed, canola was bred to contain very low levels of erucic acid, which made it safe for human consumption. The oil is extracted by crushing the small, black seeds, and it is one of the most widely used cooking oils in North America.

Canola Oil Made Of What Exactly?

Canola oil is made from the seeds of the canola plant. These seeds are small, round, and dark brown or black. The plant itself grows to about three to five feet tall and produces bright yellow flowers, similar in appearance to mustard plants.

The seeds contain about 40-45% oil by weight. To get the oil out, manufacturers use a process that combines mechanical pressing and chemical extraction. The seeds are first cleaned and heated, then crushed to release the oil. The remaining solid material is treated with a solvent, usually hexane, to extract the last bit of oil. The crude oil then goes through refining, bleaching, and deodorizing to remove impurities, colors, and odors.

What remains is the clear, light oil you see on store shelves. It is almost entirely fat, with no protein or carbohydrates.

What Kind of Fat Is in Canola Oil?

Canola oil is primarily a monounsaturated fat. This is the same type of fat found in olive oil and avocados. Monounsaturated fats are considered heart-healthy because they can help lower LDL (bad) cholesterol levels when used in place of saturated fats.

Here is the typical fatty acid breakdown of canola oil:

• Monounsaturated fat: about 62-64%
• Polyunsaturated fat: about 28-30%
• Saturated fat: about 7-8%

Canola oil has one of the lowest saturated fat contents of any common cooking oil. It also contains a significant amount of alpha-linolenic acid, an omega-3 fatty acid that the body cannot produce on its own. A single tablespoon provides about 1.3 grams of omega-3s, which is a meaningful contribution to daily intake.

Is Canola Oil the Same as Rapeseed Oil?

No, but they come from the same plant family. Traditional rapeseed oil contains high levels of erucic acid, a compound linked to heart damage in animal studies. Canola was developed in the 1970s by Canadian plant breeders who used traditional crossbreeding techniques to create a rapeseed plant with very low erucic acid levels.

To legally be called canola oil in most countries, the oil must contain less than 2% erucic acid. In practice, most commercial canola oil contains less than 1%. The canola plant also has lower levels of glucosinolates, compounds that gave old rapeseed oil a bitter taste and reduced its nutritional value.

In Europe, you may see “rapeseed oil” sold for cooking. That product is usually made from low-erucic-acid varieties and is essentially the same as canola oil. However, if you see “rapeseed oil” without any qualifier, it is worth checking the label for erucic acid content.

Is Canola Oil Genetically Modified?

Most canola grown in North America is genetically modified. According to the U.S. Department of Agriculture, over 90% of canola planted in the United States is genetically modified to be resistant to specific herbicides. This means the plant can be sprayed with herbicides that kill weeds without harming the crop.

If avoiding GMOs matters to you, look for organic canola oil. Organic certification prohibits the use of genetically modified seeds. Non-GMO labels are also available on some brands. The genetic modification of canola does not change the fatty acid composition of the oil, so the nutritional profile is essentially the same as non-GMO canola.

What Is Canola Oil Used For?

Canola oil is one of the most versatile cooking oils. Its neutral flavor means it does not overpower the taste of food. It has a relatively high smoke point of about 400-450°F (204-232°C), which makes it suitable for most cooking methods, including baking, sautéing, and stir-frying.

Because it is liquid at room temperature and has a mild taste, canola oil is commonly used in salad dressings, mayonnaise, and baked goods. It is also used in commercial food production for frying and as an ingredient in processed foods. The oil’s low saturated fat content makes it a popular choice for people looking to reduce their intake of saturated fats.

Canola oil is also used outside the kitchen. It appears in some cosmetics, lubricants, and biodiesel. However, the food-grade oil sold in grocery stores is the same product used for cooking.

Is Canola Oil Healthy or Unhealthy?

The evidence on canola oil is largely positive, but it is not without controversy. Research consistently shows that replacing saturated fats with unsaturated fats like those in canola oil lowers LDL cholesterol. A 2013 analysis of randomized controlled trials published in the American Journal of Clinical Nutrition found that canola oil significantly reduced total cholesterol and LDL cholesterol compared to saturated fats like butter and lard.

Some concerns about canola oil have circulated online, often based on misinformation. For example, claims that canola oil is toxic because it comes from rapeseed are not accurate. The toxic compound erucic acid was bred out of the plant decades ago. Canola oil is generally recognized as safe by the U.S. Food and Drug Administration.

One legitimate consideration is that highly refined canola oil has fewer antioxidants than cold-pressed oils like extra virgin olive oil. Refining removes beneficial compounds along with impurities. If you are looking for a cooking oil with maximum antioxidant content, extra virgin olive oil is a better choice. But for a neutral-tasting oil with a favorable fat profile, canola is a reasonable option.

How Does Canola Oil Compare to Other Cooking Oils?

Choosing a cooking oil depends on what you value: smoke point, flavor, fat profile, or nutrient content. Here is a quick comparison of common cooking oils.

The percentages are approximate and vary by brand and processing method. Canola oil offers one of the lowest saturated fat contents available, which is why it is frequently recommended for heart health. Avocado oil has a higher smoke point, making it better for very high-heat cooking. Extra virgin olive oil has more antioxidants but a lower smoke point and a stronger flavor.

Does Canola Oil Go Bad?

Yes, all oils go rancid eventually, and canola oil is no exception. Exposure to light, heat, and oxygen speeds up the process. Rancid oil develops an unpleasant odor and taste and contains free radicals that are harmful to health.

Unopened canola oil can last about one to two years when stored in a cool, dark place. Once opened, it is best used within six to twelve months. You can extend its shelf life by keeping it in the refrigerator, though it may turn cloudy. That cloudiness is normal and disappears when the oil returns to room temperature.

Signs that canola oil has gone bad include a fishy, stale, or paint-like smell. If the oil smells off, do not use it. Cooking with rancid oil will ruin your food and may introduce unhealthy oxidation products into your diet.