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Protein powder quality
- Thread starter anthrax
- Start date
Y_lifter
New member
I'm looking.... I had a Certificate of Analysis COA from the Manufacturer that PF buys from Emailed to me about a year ago.
I asked for it on the ION WHEH ISOLATE and they sent me a scanned copy that was only 2 months old.
I know I have also seen other independent COA's on their protein on the web because they buy from the big raw protein manufacturers.
I'll keep looking and I have also asked again for a COA on the ION Exchange Whey Isolate that I use.
I asked for it on the ION WHEH ISOLATE and they sent me a scanned copy that was only 2 months old.
I know I have also seen other independent COA's on their protein on the web because they buy from the big raw protein manufacturers.
I'll keep looking and I have also asked again for a COA on the ION Exchange Whey Isolate that I use.
I have used 2 different brands of protien, EAS, and something else i cant remember. The one i cant remember had 25g of protien per serving, but clumped up pretty bad. I switched to EAS and no clumping at all, EAS had 3g less protien. I sarted to think and was wondering if this is a good thing though. Would the clumping mean that the protien is higher quality, or just because of the higher quantitiy?
w84me
New member
protein article by "Big Cat"
just one article with some comparisons & label guidance....
one topic from his article I copied below.....
Biological Value
Proteins are ranked according to Biological Values (BV), arbitrary numbers given to protein to show comparisons in their availability within the body. At the time the system was introduced eggs were given the highest BV of 100 because they are the most bio-available natural protein. Afterwards whey was isolated from milk and shown to have a higher BV, and depending on the process used can yield percentage from 104 to 154 on the scale. BV scales are a useful tool in putting together a complete protein, but it pisses me off that it's being used as a sales-pitch by companies promoting their whey products. Obviously a high BV brings with it certain downsides. The easier it absorbs the faster it absorbs. The faster it absorbs the faster it's rendered useless within the body, which makes taking it in large amounts at once impossible. Some would have you take 50 grams of whey in one sitting, and I guarantee you 25 to 50 percent of that is being wasted. At the price of a decent whey protein Isolate that is plain insanity. So in this article I present you with your fast-track guide to protein consumption.
just one article with some comparisons & label guidance....
one topic from his article I copied below.....
Biological Value
Proteins are ranked according to Biological Values (BV), arbitrary numbers given to protein to show comparisons in their availability within the body. At the time the system was introduced eggs were given the highest BV of 100 because they are the most bio-available natural protein. Afterwards whey was isolated from milk and shown to have a higher BV, and depending on the process used can yield percentage from 104 to 154 on the scale. BV scales are a useful tool in putting together a complete protein, but it pisses me off that it's being used as a sales-pitch by companies promoting their whey products. Obviously a high BV brings with it certain downsides. The easier it absorbs the faster it absorbs. The faster it absorbs the faster it's rendered useless within the body, which makes taking it in large amounts at once impossible. Some would have you take 50 grams of whey in one sitting, and I guarantee you 25 to 50 percent of that is being wasted. At the price of a decent whey protein Isolate that is plain insanity. So in this article I present you with your fast-track guide to protein consumption.
There are many methods of measuring protein quality including Net Protein Utilization (NPU), Biological Value (BV), Protein Efficiency ratio (PER) and protein digestibility corrected amino acid score (PDCAA).
BV = (N retained/N absorbed) X 100 where N = nitrogen
Based on this formula, BV must be expressed as a percentage; therefore, its obvious that BV cannot exceed 100 and that inflated numbers like 'Brand XYZ protein has a biological value of 150' is not possible. Whey protein has a high BV, but it cannot exceed 100.
BV = (N retained/N absorbed) X 100 where N = nitrogen
Based on this formula, BV must be expressed as a percentage; therefore, its obvious that BV cannot exceed 100 and that inflated numbers like 'Brand XYZ protein has a biological value of 150' is not possible. Whey protein has a high BV, but it cannot exceed 100.
