Amino Acid Profile of Yeast compared to Whey and Pea
Amino acid composition in g/100 g of yeast, whey, and pea protein supplements.
How does whey protein compare to yeast protein isolate, and pea protein?
View the table of the amino acids and the breakdown of each below.
Per 100G protein
Per 100g of Protein
| Amino Acid | Yeast Protein | Whey |
| Alanine | 5.8 g | 4.3 g |
| Arginine | 5.8 g | 2.8 g |
| Aspartic Acid + Asparagine | 11 g | 10.4 g |
| Cysteine | 0.8 g | 2.1 g |
| Glutamic Acid + Glutamate | 11 g | 16.4 g |
| Glycine | 4.4 g | 1.7 g |
| Histidine** | 2.4 g | 2 g |
| Isoleucine** ^ | 5.8 g | 5.7 g |
| Leucine**^ | 8.8 g | 10.9 g |
| Lysine** | 9.6 g | 9.3 g |
| Methionine** | 2 g | 2 g |
| Phenylalanine** | 5.3 g | 3.2 g |
| Proline | 4 g | 8.1 g |
| Serine | 5.3 g | 5.7 g |
| Threonine** | 5.2 g | 5.6 g |
| Tryptophan** | 1.6 g | 1.6 g |
| Tyrosine | 4.6 g | 2.8 g |
| Valine** ^ | 6.6 g | 5.4 g |
| * Essential Amino Acids | 47.3 g | 45.7 g |
| ^ Branched Chain Amino Acids | 21.2 g | 22.0 g |
A study by Banaszek et al. found that pea protein and whey protein had similar effects on physical adaptations after eight weeks of high-intensity functional training. The study found that both proteins had similar effects on: Strength, Performance, Body composition, Muscular adaptations. Yeast protein fits this same profile, and should be just as effective.
Source: https://pubmed.ncbi.nlm.nih.gov/30621129/
Yeast protein is comparable to whey, and has a PDCAAS of 1.0
PDCAAS stands for Protein Digestibility Corrected Amino Acid Score. It's a method for assessing the quality of protein in food by comparing its amino acid composition to the amino acid requirements of humans.
ProteinRx is created using single-celled yeast; fermented and extracted to isolate protein. We blend it with some fiber and sweetener to make an awesome & versatile protein powder -- better in every way.
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With No Plants & No Animals... we avoid cruelty and keep our protein pesticide and herbicide free. Of course no antibiotics or land usage from cattle either.