Research
Micronutrients & recovery
The geographical origin of protein powder (India, China, Japan) significantly influences its free amino acid profile.
The country where your protein powder was manufactured affects its specific amino acid content, not just the brand or type.
ModerateSupportsMEDIUM confidence
Notably, the whey and vegan protein samples originating from Japan exhibited distinct variations in their amino acid profiles compared to those from India and China.
Why this rating
Analytical study of products.
Source
Quantitative LC-MS/MS Determination of Source-Specific Variations of Underivatized Free Amino Acids in Protein Powders
C. Ranjani et al. · Asian Journal of Chemistry · 2025
DOI 10.14233/ajchem.2025.34190
mechanism_only · n=18
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Whey protein powders contain significantly higher concentrations of sweet-tasting free amino acids (glycine, alanine, serine, proline, threonine) compared to plant-based protein powders.Moderate
- High concentrations of specific free amino acids (glutamine, tryptophan) are consistently present in both whey and plant-based protein powders.Moderate
Related findings · Micronutrients & recovery
- Trans fats (industrial trans-fatty acids) are unequivocally harmful and should be completely avoided as they raise LDL-C, TGs, and Apo B while lowering HDL-C.Strong
- For menopausal women with osteoporosis, first-line pharmacologic therapies include alendronate, risedronate, zoledronic acid, and denosumab for the prevention of hip, nonvertebral, and vertebral fractures.Strong
- Folic acid fortification of flour prevents neural tube birth defects, and mandatory fortification is more effective than voluntary supplementation alone.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →