Second, and more importantly, protein aggregates can trigger immune responses
One study used advanced lab techniques to determine how much L-glutamine is found in various foods ( The following are the percentages of protein made up of L-glutamine in each food: Eggs : 4.4% (0.6 g per 100 g of eggs) Beef : 4.8% (1.2 g per 100 g of beef) Skim milk : 8.1% (0.3 g per 100 g of milk) Tofu : 9.1% (0.6 g per 100 g of tofu) White rice : 11.1% (0.3 g per 100 g of rice) Corn : 16.2% (0.4 g per 100 g of corn) Although some plant sources, such as white rice and corn, have a large percent of protein made up of glutamine, they have fairly low protein contents overall ( Thus, meat and other animal products are the simplest ways to get high amounts of it
The peptide sequence is Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val
Bonnefont-Rousselot D, Collin F (2010) Melatonin: action as antioxidant and potential applications in human disease and aging
Glutathione skin lightening is often one of the most popular benefits, as it can significantly improve an even tone and texture
Nature , 1987, 326(6112): 515-517