The company focuses on vitamins, amino acids, plant extracts, sweeteners and other series of products, which have been widely used in food, health food, cosmetics, feed, veterinary medicine and other industries.
Products
High Purity L-Threonine Powder | ≥98.5% Feed, Food & Supplement Grade | CAS 72-19-5
Description:
Product Overview
L-Threonine is an essential amino acid that cannot be synthesized by humans or animals and must be obtained through diet or supplementation. It was the last of the 20 proteinogenic amino acids to be discovered, identified in 1935 by W.C. Rose as an essential nutrient. Threonine plays a critical role in protein synthesis, glycine production, and immune function, making it indispensable for both human and animal nutrition.
In animal nutrition, L-threonine is widely recognized as the second limiting amino acid in swine diets and the third limiting amino acid in poultry diets. Its supplementation enables the formulation of low-protein diets without compromising performance, reducing feed costs and nitrogen excretion.
At Henan Liyin Biotech, we supply high-purity L-Threonine in the form of a white crystalline powder, with a minimum purity of ≥98.5%, compliant with USP, EP, and FCC standards. Our product is available in Feed Grade, Food Grade, and Supplement Grade to serve applications across animal nutrition, human food, dietary supplements, and personal care.
Why Choose Our L-Threonine?
Verified Purity: Assay ≥98.5% (typically 98.5–101.5%), ensuring consistent potency for all applications
100% Bioavailability: The natural L-form is 100% available for swine, poultry, and other animals
Multi-Standard Compliance: Meets USP, EP, and FCC specifications, providing global regulatory acceptance
Complete Traceability: Each batch is accompanied by a comprehensive Certificate of Analysis (COA)
Flexible Packaging: Available in packaging options from 1kg to bulk quantities
Key Functional Properties
Protein Synthesis & Growth
L-Threonine is a fundamental building block for protein synthesis. It is particularly important in muscle development and overall growth performance in both animals and humans. As an essential amino acid, it must be supplied through diet to support tissue maintenance and repair.
Glycine Production
Threonine serves as a precursor for glycine, an amino acid involved in collagen synthesis, neurotransmission, and detoxification processes.
Gut Health & Immunity
In animal nutrition, threonine plays a vital role in gut health and immune function. Research demonstrates that supplementation improves gut integrity, supports immune system function, and promotes efficient feed digestion. The inclusion of threonine enhances the amino acid profile of feed, improving feed conversion rates and overall livestock health.
Reduced Feed Costs & Nitrogen Excretion
Supplementing with L-threonine allows feed manufacturers to reduce crude protein content in animal diets without compromising performance. For every 1% decrease in dietary crude protein level, nitrogen excretion decreases by approximately 10%, ammonia emissions decrease by 10%, and water consumption decreases by 3%.
Mood & Neurological Health
Studies indicate that L-threonine may have potential applications in supporting neurological health, with some research suggesting it may help alleviate symptoms of amyotrophic lateral sclerosis (ALS) and spasticity.
Quality Assurance & Documentation
All batches undergo rigorous quality control, including:
Assay by HPLC: ≥98.5% (typically 98.5–101.5%)
Heavy Metal Screening: Lead ≤ 5 ppm, Arsenic ≤ 2 ppm
Microbiological Testing: For safety and purity
Specific Rotation and pH: Verified against USP/EP/FCC specifications
Loss on Drying and Residue on Ignition: To ensure stability and purity
We provide complete documentation with every shipment, including Certificate of Analysis (COA), Material Safety Data Sheet (MSDS), and Allergen Statement. Our GMP-certified production ensures batch-to-batch consistency and traceability.
Sourcing Support
We offer flexible packaging and can provide samples for pre-shipment testing. Our technical team is available to assist with grade selection (Feed, Food, or Supplement Grade), application guidance, and custom formulation support — from R&D trials to full-scale commercial production.
Contact us to discuss your specific L-Threonine requirements or to request samples for your formulations.
Parameters:
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Parameter
Specification
Product Name
L-Threonine
CAS Number
72-19-5
Molecular Formula
C₄H₉NO₃
Molecular Weight
119.12 g/mol
Assay (Purity)
≥ 98.5% (typically 98.5–101.5% )
Appearance
White to off-white crystalline powder
Available Grades
Feed Grade, Food Grade, Supplement Grade
Standards
USP, EP, FCC
Specific Rotation
[α]²⁰/D -26.5° to -29.0°
Loss on Drying
≤ 0.5%
Residue on Ignition
≤ 0.1%
Heavy Metals
≤ 10 ppm
pH (100g/L solution)
5.0 – 6.0
Water Solubility
90 g/L at 20°C
Solubility
100 g/L in water at 20°C
Melting Point
Approx. 185°C (decomposes)
Packaging Options
1kg, 5kg, 25kg (or as per request)
Documentation
Full COA, MSDS, Allergen Statement
Storage Conditions
Store in a cool, dry place at 5–30°C, protected from light and moisture.
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Animal Feed
L-Threonine is one of the most widely used feed additives globally, recognized as the second limiting amino acid in swine diets and the third limiting amino acid in poultry diets. It is particularly valuable in cereal-based diets which are naturally deficient in threonine.
Poultry
Supports growth performance, feed conversion, and body weight gain
Plays a critical role in gut health and immune function
Enables reduction of dietary crude protein while maintaining performance
Swine
The second limiting amino acid in pig diets
Improves feed conversion rates and overall growth
Supports maintenance requirements and gut health
Aquaculture
Allows reduction of crude protein in diets while maintaining growth
Reduces nitrogen excretion in aquatic systems
Regulatory Status: L-Threonine is authorized as a feed additive for all animal species in the European Union (Commission Implementing Regulation EU 2016/1220). EFSA has evaluated L-threonine produced by fermentation for use in all animal species.
Recommended Inclusion: Levels vary by species and production stage. Typical feed grade product contains ≥98.5% L-Threonine with 100% bioavailability.
Food & Beverage
L-Threonine is used in food applications as a nutritional supplement and flavoring agent (FEMA 4710).
Key Applications
Nutritional Fortification: Used to enhance the amino acid profile of processed foods and protein-based products
Flavoring Agent: Contributes to taste development in processed products
Clinical Nutrition: Used in amino acid infusion solutions and specialized nutrition formulas
Regulatory Status: FCC grade is suitable for food, beverage, and nutritional supplement applications.
Dietary Supplements
L-Threonine is a popular ingredient in dietary supplements targeting protein support, immune function, and overall wellness. As an essential amino acid, it is included in many amino acid blend formulations.
Key Applications
Amino Acid Blends: Used in comprehensive amino acid formulations for general wellness and protein support
Clinical Nutrition: Included in specialized formulas for patients requiring nutritional support
Sports Nutrition: Supports protein synthesis and recovery
Typical Dosage: Adult human requirements are approximately 20 mg/kg body weight/day. Supplementation levels vary by intended use.
Personal Care & Cosmetics
L-Threonine is used in personal care formulations for its skin-conditioning properties.
Key Applications
Skin Care: Supports skin health through its role in cellular metabolism
Formula Compatibility: Stable in topical formulations and compatible with a wide range of cosmetic ingredients
Formula Compatibility: Stable in topical formulations and compatible with a wide range of cosmetic ingredients.
Key words:
High Purity L-Threonine Powder | ≥98.5% Feed, Food & Supplement Grade | CAS 72-19-5
Function:
Application：
Animal Feed
L-Threonine is one of the most widely used feed additives globally, recognized as the second limiting amino acid in swine diets and the third limiting amino acid in poultry diets. It is particularly valuable in cereal-based diets which are naturally deficient in threonine.
Poultry
Supports growth performance, feed conversion, and body weight gain
Plays a critical role in gut health and immune function
Enables reduction of dietary crude protein while maintaining performance
Swine
The second limiting amino acid in pig diets
Improves feed conversion rates and overall growth
Supports maintenance requirements and gut health
Aquaculture
Allows reduction of crude protein in diets while maintaining growth
Reduces nitrogen excretion in aquatic systems
Regulatory Status: L-Threonine is authorized as a feed additive for all animal species in the European Union (Commission Implementing Regulation EU 2016/1220). EFSA has evaluated L-threonine produced by fermentation for use in all animal species.
Recommended Inclusion: Levels vary by species and production stage. Typical feed grade product contains ≥98.5% L-Threonine with 100% bioavailability.
Food & Beverage
L-Threonine is used in food applications as a nutritional supplement and flavoring agent (FEMA 4710).
Key Applications
Nutritional Fortification: Used to enhance the amino acid profile of processed foods and protein-based products
Flavoring Agent: Contributes to taste development in processed products
Clinical Nutrition: Used in amino acid infusion solutions and specialized nutrition formulas
Regulatory Status: FCC grade is suitable for food, beverage, and nutritional supplement applications.
Dietary Supplements
L-Threonine is a popular ingredient in dietary supplements targeting protein support, immune function, and overall wellness. As an essential amino acid, it is included in many amino acid blend formulations.
Key Applications
Amino Acid Blends: Used in comprehensive amino acid formulations for general wellness and protein support
Clinical Nutrition: Included in specialized formulas for patients requiring nutritional support
Sports Nutrition: Supports protein synthesis and recovery
Typical Dosage: Adult human requirements are approximately 20 mg/kg body weight/day. Supplementation levels vary by intended use.
Personal Care & Cosmetics
L-Threonine is used in personal care formulations for its skin-conditioning properties.
Key Applications
Skin Care: Supports skin health through its role in cellular metabolism
Formula Compatibility: Stable in topical formulations and compatible with a wide range of cosmetic ingredients
Formula Compatibility: Stable in topical formulations and compatible with a wide range of cosmetic ingredients.
About Us
Henan Liyin Biotech Co.,Ltd
We are is established in 2024,located in Zhengzhou,on the banks of the Yellow River-the revered “Mother River “of China .As a specialized supplier of human nutrition and animal health products ,the company focuses on a range of products including vitamins ,amino acids ,plant extracts ,and sweeteners,which are widely used in industries ,such as food ,health supplements,cosmetics ,feed and veterinary medicine .By integrating global product resources with the needs of international clients ,Liyin Biotech provides premium products and professional services tailored to each customer .
FAQ
How to contact ?
You can contact with us by Whatsapp:+86 15824830539, the Average Response Time is 0-4h on Work time, <24h on Non-worktime.
For every inquiry, our sales will provide the one-for-one service for you.
How about the payment terms ?
Normal orders: Company account ;Sample/small orders: Paypal(The 5-10% extrafee).About the payment term, we will negotiate alone.
How to get the samples ?
At the first time ,we can provide you the normal product <30g free sample
How to confirm the Product Quality before placing orders?
1st, you can get free samples for some products, just paythe basic cost for us.
2nd,Also you can send the specification or your quest tous, we will customize the products for you.3rd,We emphasis that our whole company make a livingwith organic chemical and customers, we absolutelyimpossible to sale any fake goods, unqualified goods, it isshame! And None False certificate/lie/illegal thing in oursales net!
Which kind of payment do you accept?
- As usually we use company account ,T/T in advance ,or at least 30% T/T in advance ,the balance can be paid by the copy of B/L
- For some countrys we can accept L/C at sight & DP at sight
- For smaples we can use Paypal (The 5-10% extra fees) or other ways
About the payment term, we will negotiate alone.
How about the shipment ?
1>For bulk goods ,we can use contaioner by sea ,1&20 and 1&40 contaioner
2>For urgently and expensive goods ,we can arrange the air lines for customers choose ,or can as customer required
3>For samples or small quantity goods ,we can use Fedex or other express ways
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As a specialized supplier of human nutrition and animal health products ,the company focuses on a range of products including vitamins ,amino acids ,plant extracts ,and sweeteners,which are widely used in industries ,such as food ,health supplements,cosmetics ,feed and veterinary medicine .
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