Re: PDCAAS and dual protein sources

[Guest guest]

Combination products must be calculated individually using IAA analysis compared to the reference/requirement pattern per g/protein. I have calculated the PDCAAS for a number of the combo products and some of the them have a lower PDCAAS than some of the collagen products. If you send me the IAA analysis, I'll calculate the PDCAAS for you. Cordially, Litchford PhD, RD, LDNwww.casesoftware.commdlphd@...New Release...Nutrition Focused Physical Assessment: Making Clinical Connections. From: ina Lowkis <paulinaj5@...> Bariatric < > Sent: Monday, June 4, 2012 4:29 PM Subject: PDCAAS and dual protein sources

Hello again,

If a product has dual protein sources (i.e., collagen AND whey) which digestibility factor do you use?

TIA,

ina

ina P. Lowkis RD, LDN, CDE

"Never eat more than you can lift"

-Miss Piggy

[Guest guest]

I have been wondering this same thing! The company rep said that the PDCAAS score is 100 because they add back the individual amino acids the collagen was

lacking (which sounds plausible, but I’m not convinced). My hospital has switched to a liquid protein now as well which is concerning to me. Another question is how much complete protein would someone get from a combo product – for example ProSource made

by Medtrician says you get 15g/oz, but it is a collagen/whey combo. Here is what the label says:

Ingredients: Protein (from hydrolyzed collagen, l-leucine, l-tryptophan, whey isolate, l-histidine, l-isoleucine, l-threonine, and –methionine), purified

water, sucrose, sodium acid sulfate, phosphoric acid, natural flavors, tartaric acid, potassium sorbate, and sodium benzoate.

Typical Amino Acid profile per gram of protein:

Indispensible Amino Acids

Histidine – 14mg

Isoleucine – 17mg

Leucine – 40mg

Lysine – 34mg

Methionine + Cysteine – 13mg

Phenylalanine + Tyrosine – 24mg

Threonine – 24mg

Tryptophan – 6mg

Valine – 23mg

Modified Amino Acids

Hydroxylysine – 15mg

Hydroxyproline – 122mg

Dispensable Amino Acids

Alanine – 86mg

Arginine – 79mg

Aspartate – 47mg

Glutamate – 104mg

Glycine – 239mg

Proline – 141mg

Serine – 35mg

What seems odd to me is they state “typical AA profile” – does that mean the product varies or are they just saying that if you random sample test 1 g of

the product it might not look exactly the same as the next?

We also have Pro-Stat available:

AMINO

ACID COMPOSITION

ESSENTIAL MG/G

AMINO ACIDS PROTEIN PATTERN

Histidine 18

Isoleucine 25

Leucine 55

Lysine 51

Methionine & Cysteine 25

Phenylalanine & Tyrosine 47

Threonine 27

Tryptophan 7

Valine 32

NON-ESSENTIAL AMINO ACIDS

Alanine 93

Aspartic Acid 66

Serine 32

CONDITIONALLY- ESSENTIAL

AMINO ACIDS

Arginine 86

Glutamic Acid 111

Glycine 269

Proline 148

MODIFIED AMINO ACIDS

Hydroxylysine 9

Hydroxyproline 140

Prostat is a hydrolyzed collagen with other AA added.

What are your thoughts on these products and the theory of adding the AA collagen is missing?

Thank You,

Berry, MS, RD

Healdsburg

District Hospital

Clinical Dietitian

(707)431-6426