8. Reduced Fat Mozzarella
Mozzarella cheese contains riboflavin, vitamin B6, and biotin. Every cup or 132 grams of diced reduced fat mozzarella cheese contains 754mg or 269% RDI of tryptophan. Other cheeses that are rich in this amino acid are Tilsit, gouda, and edam with 35% RDI, fontina with 36%, swiss with 40%, gruyere with 42%, Romano with 43%, and cheddar and parmesan with 56% RDI per ounce.
9. Roasted Soybeans
Soybeans help enhance the metabolism, regulate circulation, improve bone and digestive health, and lower the risk of diabetes. One cup or 93 grams of soybeans contain 535 mg or 191% RDI of tryptophan. There are also other soya foods that contain this amino acid like tempeh with 19% RDI, boiled soybeans with 24% RDI, fried tofu with 27% RDI, stir-fried sprouted soybeans with 30% RDI, and dried-frozen tofu with 75% RDI per ounce.