Can't seem to find the absorption rate and digestion time for amino acid, does anyone know it? I know that the absorption rate for whey protein is 10 grams per hour, and it takes 3 hours to digest it, so 30 grams every 3 hours is what you can take in that gets absorbed.
I haven't seen anything on the digestion time of individual amino acids.
However, as you stated there is information on certain proteins
Whey Protein
The digestion time is about 120 minutes, 2 hours.
However, the digestion time is dependent on the type of whey.
Hydrolyzed Whey is digested quickly, approximately under an hour.
Benefits
It is high in Leucine, considered an "Anabolic Amino Acid". Since you are familiar with Norton, you probably know this.
Whey is also quickly digested. Thus, is quickly starts the "Muscle Protein Synthesis" (muscle building process).
"Muscle Protein Synthesis" = Increased Muscle Mass.
Thus, it is considered an "Anabolic Protein".
Downside
Due to it's quick digestion, it does not allow "Muscle Protein Synthesis" to continue past about the 2 hour mark.
Whey is also low in some other amino acids that assist in recovery, Arginine and Glutamine.
Casein
This is falls more in the catagory of "Time Released".
It takes about 300 minutes, 5 hours.
Benefit
Adding this to whey insures that "Muscle Protein Synthesis" continues to feed the muscles, long after whey has stopped working.
Casein has a good Leucine base but less than whey.
Casein is high in Glutamine, where whey is low.
It is considered an "Anti-Catabolic Protein".
Downside
Slow digestion time, low in Arginine and a bit lower in Leucine.
Soy Protein
It was once considered a protein to avoid. However, research shows soy has some benefits and should be considered.
Benefits
Digestion time is between whey and casein, about 180-240 minutes.
So, soy bridges the gap between whey and casein in the "Muscle Protein Synthesis" process.
It is high in Arginine and Glutamine.
It ranks along with whey and casein on the Protein Digestibility Corrected Amino Acid Score, PDCAAS. This is now one of the standard measurements of protein quality.
Downside
Low in Leucine.
Synergistic Mix
Research indicates that the whey/casein/soy combination provides a synergistic effect. That meaning the sum is greater than it's parts.
It is like adding 2 + 2 and getting 5!
I've added soy to my mix and and have NOT turned into a "Girly Man".
However, I do go to more "Chick Flick" movies and cry???
Whey/Casein/Soy Ratio
Dr. Jim Stoppani provides research information on the best Whey/Casein/Soy Ratio in the article posted below.
Supplement Research Update: Protein Blends Are Best
http://www.jimstoppani.com/home/articles/supplement-research-update-protein?preview
Here's the ratios that research indicates elicits the greatest effect.
1) 25% Whey
2) 50% Casein
3) 25% Soy
Soy Freakout
For those still still freaked out about soy, Stoppani recommends substituting egg protein.
Egg's has an intermediate digestion time, like soy.
With that said, the downside of eggs is that it is low in Arginine and the price.
Pea Protein
This vegan protein provides another protein option.
It has a good Leucine base and has high in Arginine.
The price is a lot less than egg but a little more than soy.
However, it is rated lower on the Protein Digestibility Corrected Amino Acid Score, PDCAAS.
Big Picture
Protein blends provided great foundation "Protein Team".
Each "team" member plays a position put point the board to help you win.
Kenny Croxdale