Difference in Protein Quality

[determined4000]

What would the differences be between consuming something like a wheat protein isolate vs. a complete protein source. Obviously it would be slower digesting than whey but what about the difference between any other complete protein source.
If someone is lactose intolerant or cannot digest whey, and wanted to get a protein supplement, would this be a viable option?
Or would I be better off telling them to forgo any supplement and just eat a complete protein. I am assuming a complete protein would be better but how great would the difference be if this person can't meet their needs through (or doesn't like consuming as much) meat/eggs/etc.

[Emma-Leigh]

^
There is no such thing as 'complete v's incomplete' protein. The only REAL incomplete protein = collagen/ gelatin. Other plant based proteins are simply a protein that is considered to be a protein source LIMITED in one or more of the EAA protein -> for more info check out THIS THREAD HERE - Vegetables = complete protein? (http://forum.bodybuilding.com/showthread.php?t=121062861).

In regards to your question ->
Firstly, most MANUFACTURED sources of plant proteins (eg: Wheat protein isolate, rice protein isolate, etc) are altered such that they are no longer considered to be limited/ 'incomplete'. So the concept/ concerns you discuss are only REALLY an issue in a diet where there is limited variability in sources (eg: someone living on rice ;) ).

Anyway - response to a protein comes back to a number of things - but is generally considered / described in relation to protein QUALITY. There was a good article about it recently in the AJCN (http://www.ajcn.org/cgi/content/full/87/5/1576S).
^
Basically/ simply: some proteins have a better response in terms of satiety/ hormones/ up-regulation of transcription enzymes etc etc.

So - in essence: If someone was lactose intolerant/ couldn't do whey -> they are viable options. Are they likely as GOOD as some of the other sources? No.

[Shredded-Wolf]

^
There is no such thing as 'complete v's incomplete' protein. The only REAL incomplete protein = collagen/ gelatin. Other plant based proteins are simply a protein that is considered to be a protein source LIMITED in one or more of the EAA protein -> for more info check out THIS THREAD HERE - Vegetables = complete protein? (http://forum.bodybuilding.com/showthread.php?t=121062861).

In regards to your question ->
Firstly, most MANUFACTURED sources of plant proteins (eg: Wheat protein isolate, rice protein isolate, etc) are altered such that they are no longer considered to be limited/ 'incomplete'. So the concept/ concerns you discuss are only REALLY an issue in a diet where there is limited variability in sources (eg: someone living on rice ;) ).

Anyway - response to a protein comes back to a number of things - but is generally considered / described in relation to protein QUALITY. There was a good article about it recently in the AJCN (http://www.ajcn.org/cgi/content/full/87/5/1576S).
^
Basically/ simply: some proteins have a better response in terms of satiety/ hormones/ up-regulation of transcription enzymes etc etc.

So - in essence: If someone was lactose intolerant/ couldn't do whey -> they are viable options. Are they likely as GOOD as some of the other sources? No.

agreed, Only differences between other proteins is their digesting speeds.

[Oliver1987]

Biological value does make a difference, Google these exact words, since I can't post links :


Biological value (BV) Definition

[BigRedMachine87]

Interesting read

[Frankdaddy]

It really depends on what you want from the protein. Imo find a source with the 9 essential amino acids, especially l-luciene, which had been shown to be one of the main inhibitors of protein synthesis. You could also get straight amino acid supplementation and calorically would not be the same as a shake, but nutrient profile, you would.

[sweetiebear0408]

I agree with the above posts and as someone who has to limit the amount of whey because that I'm supposed to avoid dairy alltogether and especially lactose, here are a few types of protein you can choose (i.e. powders):

Beef Protein Isolate: Has kind of a chalky taste but if you mix the right flavour it's ok. New to the market and hard to find, but I will post a link at the bottom :)

Gamma Pea Protein Isolate: In my opinion, the best tasting out of any plant protein and mixes really well. There is a slight taste to it, but again, if you avoid strawberry flavour or something to that effect you'll be ok :)

Hemp Protein: Not for the faint at heart - it often contains more fibre than anything and most likely it will go through you, unless you need the fibre, but you could mix it. I have found this kind only works with a heck of a lot of cocoa to hide the flavour of the hemp.

Rice Protein: Has basically no taste, but can be 'gritty'. In all honesty, not the best protein for you, but it is a better alternative than hemp.

Soy Protein: A good alternative if you cannot have whey and are vegan. Women should limit the amount of soy due to our hormone levels and soy can often affect that. Tastes good in almost any flavour, but has a 'nutty' taste to it.

Personally I recommend going for a custom mix. I did a 'non-dairy' mix with 35% Beef Isolate, 35% Gamma Pea Protein Isolate and chalked it full of Essential Aminos and Non-Essentials, along with vitamin and minerals, and I added fatty triglycerides as well (to help keep me full, but don't use it for quick digesting as it slows it down), and it worked great.

You can find the mixes at:
True Protein - they make custom mixes with as little as 5% per item. Probably a little more expensive than just ordering an isolate, but the custom mix is helpful if you cannot have whey and don't really like the taste of a single vegan/non-vegan option.

Hope this helps!

[Naturalham4]

Beef Protein Isolate: Has kind of a chalky taste but if you mix the right flavour it's ok. New to the market and hard to find, but I will post a link at the bottom :)

Not at all new to the market, though it is rare. The reason it's rare, besides the fact that it sounds disgusting, is that it's pretty much just collagen, which as Emma Leigh stated, IS an incomplete protein. Wouldn't recommend it. Would recommend actual beef, though.

[fitnessbyjay]

Not at all new to the market, though it is rare. The reason it's rare, besides the fact that it sounds disgusting, is that it's pretty much just collagen, which as Emma Leigh stated, IS an incomplete protein. Wouldn't recommend it. Would recommend actual beef, though.

Can you proof that *********** Beef Isolate is pretty much just collagen?

[iLoLd]

how many of you have tried rice protein, where does the protein itself come from rice out of curiousity