Foods highest in Tryptophan per 100 g (USDA)
The SR Legacy and Foundation food records with the most tryptophan per 100 g. Tryptophan is an essential amino acid with no Daily Value.
- Unit:
- g per 100 g
- Daily Value:
- none defined
- Datasets:
- SR Legacy and Foundation Foods; FNDDS does not report it
Tryptophan is the least abundant essential amino acid in most proteins and the precursor of serotonin and niacin. Because the usual acid hydrolysis destroys it, USDA determines it separately after alkaline hydrolysis, and fewer records report it than report the other amino acids.
Dried egg white, spirulina, soy protein, seeds, hard cheeses and some fish rank highest. Turkey, often named for its tryptophan, contains about as much per gram of protein as other meats.
Top 100 foods by Tryptophan per 100 g
5,084 of 13,621 Normal catalog records report this nutrient (Foundation Foods: 54/397 · SR Legacy: 5,030/7,793 · FNDDS: 0/5,431). Records without a value are not ranked.
How to read this ranking
A missing value means the record was not analysed for tryptophan, not that the food lacks it. FNDDS records never report amino acids, so the universe of this ranking is the analytical datasets.
Values are USDA amounts per 100 g of edible portion, ordered as reported; this is information, not dietary advice. Methodology