Rapeseed instead of soy burgers: Researchers identify a new source of
protein for humans

Date:
September 30, 2020
Source:
Martin-Luther-Universita"t Halle-Wittenberg
Summary:
Rapeseed has the potential to replace soy as the best plant-based
source of protein for humans. In a current study, nutrition
scientists found that rapeseed protein consumption has comparable
beneficial effects on human metabolism as soy protein. The glucose
metabolism and satiety were even better. Another advantage:
The proteins can be obtained from the by- products of rapeseed
oil production.



FULL STORY ========================================================================== Rapeseed has the potential to replace soy as the best plant-based
source of protein for humans. In a current study, nutrition scientists
at the Martin Luther University Halle-Wittenberg (MLU), found that
rapeseed protein consumption has comparable beneficial effects on human metabolism as soy protein. The glucose metabolism and satiety were
even better. Another advantage: The proteins can be obtained from the by-products of rapeseed oil production. The study was published in the
journal Nutrients.


==========================================================================
For a balanced and healthy diet, humans need protein. "It contains
essential amino acids which can not be synthesized in the body,"
says Professor Gabriele Stangl from the Institute of Agricultural and Nutritional Sciences at MLU. Meat and fish are important sources of high-quality proteins. However, certain plants can also provide valuable proteins. "Soy is generally considered the best source of plant protein
as it contains a particularly beneficial composition of amino acids,"
says Stangl.

Her team investigated whether rapeseed, which has a comparably beneficial composition of amino acids, could be an alternative to soy. Rapeseed
also contains phytochemicals -- chemical compounds produced by plants --
which could have beneficial effects on health, says Stangl. "So far,
only a few data on the effect of rapeseed protein intake in humans had
been available," adds the scientist. In comparison to soy rapeseed has
several other advantages: It is already being cultivated in Europe and
the protein-rich by-products of the rapeseed oil production could be
used as ingredients for new food products.

These by-products are currently used exclusively for animal feed.

In a study with 20 participants, the team investigated the effect of
ingested rapeseed and soy proteins on human metabolism. Before the interventions the participants were asked to document their diets
for a few days. Then they were invited to eat a specifically prepared
meal on three separate days: noodles with tomato sauce, that either
contained no additional protein, or was enriched with soy or rapeseed
protein. After the meal, blood was regularly drawn from the participants
over a six-hour period. "By using this study design, we were able to
assess the acute metabolic response of each study participants to the
dietary treatments." says Stangl.

The study showed: "The rapeseed protein induced comparable effects
on metabolic parameters and cardiovascular risk factors as soy
protein. Rapeseed even produced a slightly more beneficial insulin
response in the body," says nutritionist Christin Volk from MLU. Another benefit was that the participants had a longer feeling of satiety after
eating the rapeseed protein. "To conclude, rapeseed appears to be a
valuable alternative to soy in the human diet," says Volk.

The only drawback: "Rapeseed protein, in contrast to soy protein, has
a mustard flavour," says Volk. Therefore, rapeseed is more suitable
for the production of savoury foods rather than sweet foods, explains
the researcher.

The work was supported by the Union for Oil and Plant Technology
e.V. (UFOP, grant number: 528/181).


========================================================================== Story Source: Materials provided by Martin-Luther-Universita"t_Halle-Wittenberg. Note: Content may be edited
for style and length.


========================================================================== Journal Reference:
1. Christin Volk, Corinna Brandsch, Ulf Schlegelmilch, Monika Wensch-
Dorendorf, Frank Hirche, Andreas Simm, Osama Gargum, Claudia Wiacek,
Peggy G. Braun, Johannes F. Kopp, Tanja Schwerdtle, Hendrik Treede,
Gabriele I. Stangl. Postprandial Metabolic Response to Rapeseed
Protein in Healthy Subjects. Nutrients, 2020; 12 (8): 2270 DOI:
10.3390/ nu12082270 ==========================================================================

Link to news story: https://www.sciencedaily.com/releases/2020/09/200930110124.htm

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