In the United States, you cannot make a "High Protein" claim based solely on the total grams of protein on the label. The FDA requires that protein claims be based on the quality of that protein, measured by the Protein Digestibility-Corrected Amino Acid Score (PDCAAS). If your PDCAAS is low (common in plant-based proteins), your 20g of protein might only count as 10g toward your % Daily Value, disqualifying your claim.
Quick Answer / Outcome Preview
By following this calculation and blending protocol, you will be able to determine the exact PDCAAS of your formula and adjust your protein blend to hit specific regulatory claim thresholds (e.g., 10% or 20% DV).
Prerequisites / Requirements
- Amino Acid Profiles: Detailed milligram-per-gram data for every protein source in your formula (provided by your supplier).
- Formulation Inclusion Rates: The exact grams of each protein source per serving.
- FDA Reference Pattern: The standard amino acid requirements for the target age group (usually adults/children > 4 years).
- Digestibility Coefficients: The established digestibility percentage for your protein sources (e.g., Soy = 0.97, Pea = 0.89).
Step-by-Step Instructions
1. Identify the Limiting Amino Acid
Protein quality is limited by whichever essential amino acid is present in the lowest amount relative to the FDA reference pattern.
- Action: For each protein source, divide the mg of each essential amino acid by the grams of total protein.
- Action: Compare these values to the FDA reference pattern (e.g., Lysine requirement = 51 mg/g protein).
- Result: The amino acid with the lowest "ratio" to the pattern is your Limiting Amino Acid.
2. Calculate the Uncorrected Amino Acid Score
If you are using a blend, you must calculate the weighted average of the amino acids across all sources.
- Action: Sum the total mg of the limiting amino acid in the serving.
- Action: Divide by the total grams of protein in the serving.
- Action: Divide that result by the reference pattern value.
3. Apply the Digestibility Correction
The final PDCAAS is the Amino Acid Score multiplied by the weighted digestibility of the blend.
The Math of the Claim
- Action: Calculate the % Daily Value using this formula:
%DV = (Grams of Protein × PDCAAS) / 50g (Daily Value Reference)
4. Adjust the Blend to Optimize the Score
If your %DV is just below a claim threshold (e.g., 19% instead of 20%), don't just add more protein. Optimize the quality.
| Attribute | Industry Standard | Mesh Framework |
|---|---|---|
| Protein Source | Pea Only | Pea + Rice (70:30) |
| PDCAAS Score | 0.67 | 0.88 |
| Grams needed for 20% DV | 15g | 11.4g |
| Cost Impact | Baseline | -8% (lower total protein) |
- Action: Identify an "offsetting" protein. For Pea (low in Methionine, high in Lysine), add Rice or Sacha Inchi (high in Methionine, low in Lysine).
- Result: The "complementary" blend raises the score of the limiting amino acid, increasing the %DV without increasing total protein volume.
Tips, Warnings, & Edge Cases
- Warning: Processing (specifically high heat) can lower the digestibility of certain proteins. If your product is UHT or extruded, use a slightly more conservative digestibility coefficient in your initial math.
- Tip: Concentrates usually have lower PDCAAS than Isolates due to higher fiber/antinutrient content which lowers digestibility.
- Edge Case: Claims for infants (< 1 year) or toddlers (1–3 years) use a different reference pattern and a different method (PER instead of PDCAAS). This protocol is for adults and children > 4.
Troubleshooting / FAQs
Q: My supplier doesn't have the Amino Acid profile. What do I do? A: You cannot legally calculate a protein claim without this data. Demand a "Typical Amino Acid Profile" (TAAP) from the manufacturer or send a sample of the raw material to a lab for an AOAC 994.12 analysis.
Q: Can I use PDCAAS for "Plant-Based" claims? A: PDCAAS is only for "High Protein" or "Source of Protein" claims. It is not required for a simple "Made with Pea Protein" statement.
Expected Results
Successful optimization will yield:
- A finalized PDCAAS score backed by a calculation worksheet.
- A protein blend that hits the 10% DV (Good Source) or 20% DV (Excellent Source) threshold.
- Reduced formulation cost by using higher-quality, lower-volume protein systems.
Optimize Your Protein Claims.
Don't leave your label to chance. We help you maximize your PDCAAS scores and ensure FDA compliance with precise analytical mapping and strategic protein blending.
"Mesh's process has truly given us the impossible results we were hoping for. They have created a product that is truly unique and has the potential to change the way we think of healthy and protein containing foods."
— Reverb
