L-Tryptophan is one of the popular food/feed additives and ingredients in most countries, As a professional L-Tryptophan supplier and manufacturer, Niran BioChemical Limited has been supplying and exporting L-Tryptophan from China for almost 18 years, please be assured to buy L-Tryptophan at Niranbio. Any inquiries and problems please feel free to send emails to us via export@niranbio.com, we will reply you within 1 working day.

Additional information


Amino Acids



Qty in 20' FCL


Min. Order




Product Details:

Tryptophan can participate in the renewal of plasma proteins in animals, and can promote the role of riboflavin, and also help the synthesis of niacin and heme, which can significantly increase the antibodies in fetuses of pregnant animals, and promote lactation in dairy cows and sows during lactation. When livestock and poultry lack tryptophan, growth stagnation, weight loss, reduced fat accumulation, testicular atrophy in breeding males.

Tryptophan 98.5% (Feed Grade) is a fermentation product from natural raw materials as nutritional additives for feedstock. Thanks for the state-of-the-art fermentation technology and high level quality control system, we can offer our tryptophan in high purity above 98.5% and consistent quality for animal feed.

Test Items Standards Results
Appearance White or slightly yellow crystalline powder with slight odor complies
Assay more than 98.0% 98.71%
Content 400k~600k iu/g 522k iu/g
Loss on dry less than 0.5% 0.32%
Crude Ash less than 0.5% 0.22%
Rotation -29.0 – -32.8 -30.45°
PH 5.0-7.0 6.28


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