Rapeseed instead of soya: a new source of protein for humans
Although foods of animal origin such as meat or eggs are particularly good sources of protein, more and more people are eating vegetarian or vegan and therefore depend on plant protein. Soy products are particularly popular here. But researchers are now reporting a new source of plant protein for humans: rapeseed.
Canola may overtake soybeans as the best source of plant protein for humans. This is what the results of a new study suggest. (Image: AVTG / stock.adobe.com)
In the future, rapeseed may overtake soybeans as the best source of plant protein for humans. This is what the results of a new study suggest. Researchers have found that rapeseed is equivalent to soybeans, and in some areas it even works better. Another advantage: proteins can be obtained from the remains of rapeseed oil production.
Alternative source of protein to soy
People need protein for a healthy, balanced diet. “These contain, among other things, essential amino acids that the human body cannot produce on its own,” explains Professor Dr. Gabriele Stangl of the Institute of Agricultural and Nutritional Sciences of the Martin Luther Halle University. Wittenberg (MLU) in a communication.
Meat and fish in particular are rich in high quality protein, but there are also good plant sources of protein. “Soy is generally considered to be the gold standard for vegetable protein sources, because it has a particularly favorable amino acid composition,” says Stangl.
A research team led by Stangl wanted to know if rapeseed could be an alternative source of protein to soybeans. Because rapeseed proteins are also known to have an extremely favorable amino acid composition. In addition, rapeseed contains natural accompanying substances that could have an effect on health, explains the nutritionist.
“So far, this has not yet been sufficiently studied for humans,” explains the scientist. Rapeseed has several advantages over soybeans: in Germany significantly more rapeseed than soybeans are grown and the raw materials for the production of rapeseed proteins are already used in the production of rapeseed oil. So far, however, these have only been processed for animal feed.
Effect on metabolism
In a small study with 20 participants, nutritionists looked at the direct effect of rapeseed and soy protein on human metabolism.
For this, test subjects had to first keep a nutritional diary and then eat a special three-day meal: a plate of pasta with tomato sauce, either pure or enriched with soy or rapeseed protein. After the meal, blood was drawn regularly from the participants over a six hour period.
“One of the advantages of our study is that the blood samples give us information about the body’s immediate reaction. This gives us a much more precise knowledge of the body’s metabolic response than studies that only take single measurements, ”says Stangl.
Participants were full longer
The study, which was published in the journal ‘Nutrients’, shows:’ Rapeseed protein performed at least as good as soybean for all parameters measured. The body’s insulin response was even slightly more beneficial with rapeseed, ”explains lead author Christin Volk of MLU.
Another advantage: the test subjects were full longer after eating the rapeseed protein than with the other two meals. “In principle, rapeseed is a very good alternative to soybeans for human consumption,” Volk says.
The only minus point: “Soy is more tasteless than rapeseed, which in turn has a very light mustard note,” Volk explains. Therefore, rapeseed would be particularly suitable for producing salty foods and probably wouldn’t be used for desserts, according to the scientist. (a d)
Author and source information
This text conforms to the requirements of specialized medical literature, medical directives and current studies and has been verified by health professionals.
Martin Luther Halle-Wittenberg University (MLU): Rapeseed instead of soy pulp: a research team shows a new source of protein for humans, (consulted on 03.10.2020), Martin Luther Halle-Wittenberg University (MLU) Volk C. et al. : Postprandial metabolic response to rapeseed protein in healthy subjects; in: Nutrients, (published: 29/07/2020), Nutrients
This article is provided for informational purposes only and should not be used for self-diagnosis or self-treatment. It cannot replace a visit to the doctor.