Peptides and peptones are provided by Tryptone. It is very rich source of amino acids. Tryptone contains lots of nitrogen, which bacteria need to grow. As a rich source of nutrients, it can be mixed with other chemicals to make various kinds of microbiological media. The absence of detectable levels of carbohydrates in Tryptone makes it a suitable peptone in differentiating bacteria on the basis of their ability to ferment various carbohydrates. Tryptone is rich in tryptophane, making it valuable for use in detecting indole production. It is used as an ingredient and provides nitrogen, amino acids, and vitamins in microbiological culture media.