Protein Isolate, Soy Protein Concentrate, & Textured Soy Protein
If you read our whey
protein articles, you'll know that there are whey
protein concentrates and whey protein isolates. Soy
protein is no different - it also has concentrates and isolates.
These refer to the process by which the proteins are produced,
and the quality of the protein. Isolate is always a higher
quality protein. Let's take a look at soy protein concentrate
Soy Protein Concentrate
Soy protein concentrate are made from
defatted soy beans, by removing most of the water soluble,
non-protein ingredients. Most of the carbohydrates remain
in soy protein concentrate, so it tends to have some soy
bean flavors. Soy protein concentrate contain at least 65%
protein on a moisture free basis. In our Nitro-tech
protein supplement review, we talked in some detail
about Nitro-tech's claim of 97% whey protein isolate. You
can read a bit more about it here.
The thing is that often times, you gotta
be careful about what the manufacturers are labeling.
Protein isolates will always be more pure
than concentrates. And also be ware of how the protein content
is reported, either as "dry basis" or "as-is
basis". Reporting by as-is basis is more reflective
of the true protein contents, since all protein supplements
will have some moisture. Reporting as "dry basis"
allows the lablers to make it look like there's about 4
to 8% extra protein than an "as-is basis".
Soy Protein Isolate
Soy protein isolates are the most pure
and refined soy protein available. Soy protein isolates
are made from defatted soy beans, with most other ingredients
removed leaving almost all protein. Usually, soy protein
isolates contain 90% + protein on a moisture free (dry)
basis. Soy protein isolates will also be more 'neutral'
flavored, compared to soy concentrates, mainly because almost
everything else is removed except the protein. Unlike soy
concentrate, the carbohydrates are also removed, so the
soy bean taste is also removed.
What is Textured Soy Protein?
Textured soy protein are made from soy
protein concentrates. They're made to resemble various meat
products such as beef, pork, chicken, or seafood when hydrated.
Many people now supplement soy protein
powder for the health benefits. Read more about soy
protein benefits here. Soy protein not only provides
a full spectrum of amino acids, it also helps lower cholesterol
and reduce heart related diseases. You can find all types
of soy protein supplements online at much cheaper prices
than retail. Follow the links below.
>> Click here for Optimum Nutrition Soy Protein
>> Click here for Soy Supplements