Food Additives, Food Ingredients Supplier - Foodchem

FOODCHEM is the L-Tryptophan supplier and manufacturer, engaged in the export and wholesale of L-Tryptophan for more than 10 years. The MOQ of L-Tryptophan is 500 kgs, if you need only a small amount, please contact the local distributor of L-Tryptophan. Any suggestions and questions about the L-Tryptophan, please send Email to, we will reply within 24 hours.


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L-Tryptophan, CAS# 73-22-3, is a amino acid manufactured through fermentation, available as White to light yellow crystal powder. L-Tryptophan is widely used as nutrition supplements. It is widely accepted as safe food additive in many countries. As a professional supplier and manufacturer of food additives, Foodchem International Corporation has been supplying quality L-Tryptophan to customers all over the world for over 10 years. If you have any questions or wish to receive a quote, please feel free to reach us by email: or by phone: +86 21 2206 3075. Our sales person will get back to you in 1 working day.

  • Specification
  • FAQ
  • In-Depth
Items Standards
Appearance White crystals or crystalline powder
Assay 98% Min
Specific Rotation -29.0°~-32.3°
Loss on Drying 0.5% Max
Heavy Metals 20mg/kg Max
Arsenic(As2O3) 2mg/kg Max
Residue on ignition 0.5% Max

Available Grade of L-Tryptophan

  • Food Grade: L-Tryptophan is widely used as nutritional supplement in food and beverage industries. Foodchem's food grade L-Tryptophan is available as fine powder(>98% purity).
  • Feed Grade: Foodchem's feed grade L-Tryptophan is available as fine powder(>98% purity).
  • Quality Control

    At Foodchem International Corporation, we apply strict quality control process to all our products. All L-Tryptophan we provide has been strictly tested under HACCP and ISO standards and proved to be safe for using as food additive.

    Storage&Handling Precaution

    Storage: L-Tryptophan should be kept in dry, cool, and shaded place with original packaging, avoid moisture, store at room temperature.
    Handling Precaution: Handling of L-Tryptophan should only be performed by personnel trained and familiar with handling of organic chemicals. Avoid skin and eye contact and breathing in dust. Avoid handling which leads to dust formation.

    Application and Uses of L-Tryptophan

    L-Tryptophan is a amino acid widely used as nutrition supplements in food and beverage industries. As a essential amino acids, L-Tryptophan can be used in a wide variety of industries including: food production, beverage, pharmaceutical, cosmetics, agriculture/animal feed, and various other industries.
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