L-Tryptophan Bulk Powder – Premium Grade Essential Amino Acid

Shaanxi Nuoyuan Biotech Co., Ltd. delivers pharmaceutical-grade L-tryptophan Bulk Powder with a guaranteed purity of 98% and an annual processing capacity of 20,000 tons. This crystalline powder is white to light yellow (CAS No. 73-22-3) and is manufactured by sophisticated microbial fermentation in our 30,000㎡ ISO 9001-certified facility to fulfil USP, EP and AJI requirements. Our quality control system has 5 HPLC testing devices to guarantee constant potency, zero contamination and complete traceability from fermentation to final packing. We have over 15 years of OEM/ODM expertise, providing ready-stock inventory, quick global delivery and full technical support to pharmaceutical, nutraceutical and animal nutrition businesses across the globe.

What is L-tryptophan Bulk Powder?

It is a high purity necessary amino acid known as a metabolic building block for production of serotonin and melatonin. Your body can’t make it on its own therefore supplementation is key to keeping your mood, sleep and protein metabolism at peak levels.

This crystalline powder is a major raw ingredient for nutritional supplements, therapeutic nutrition formulations and speciality animal feed in industrial applications. It tackles critical production difficulties such as providing uniform bioavailability, stringent pharmacopoeia compliance and stability throughout processing.

Our product provides you a solid option for big scale manufacturing. Whether you’re making mood-support capsules or improving poultry feed efficiency, this ingredient will provide the performance consistency your operations need.

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Certificate of Analysis (COA)

Product Name	L-Tryptophan	Batch number	/
Product Type	98%	Batch quantity	6500kgs
Quality	Feed Grade	Country of origin	China

Analysis Item	Specification	Results
Appearance	White or light yellow Crystalline Powder	Conforms
Odor /Taste	Characteristic	Conforms
Impurity	None visible impurity	Conforms
Assay	≥ 98%	99.8%
Loss on Drying	≤ 0.5%	0.3%
Total ash	≤ 0.5%	0.3%
PH(1% solution)	5.0 ~ 7.0	5.8
Specific Rotation(˚) ·dm2/kg	-29.0 ~ -32.8	-29.4
Storage:	Store in a well-closed container away from moisture,light, oxygen.
Shelf life:	24 months under the conditions above and in its original packaging.

Processing Excellence: From Fermentation to Crystallization

Our manufacturing approach combines the accuracy of biotechnology with industrial-scale efficiency. We used genetically optimised strains of Corynebacterium glutamicum in fed-batch bioreactors at regulated pH 7.0 and 37°C. This process of fermentation yields a higher purity than the conventional chemical synthesis.

Post-fermentation we have a multi-stage purifying method. Ion exchange adsorption (pH 3.5–4.0) for impurity removal Activated carbon decolorisation and recrystallisation. This stringent technique is a total elimination of the hazards of “Peak E” contamination.

Your finished product has excellent stability while undergoing tableting, encapsulation, or feed pelleting. The optimised particle size distribution guarantees homogeneous mixing and constant bioavailability in the final composition.

Key Benefits in Different Industries

For Pharmaceutical & Clinical Nutrition Manufacturers:

You are provided with a USP/EP compliant ingredient for total parenteral nutrition (TPN) formulations. Our powder preserves nitrogen balance in metabolically challenged individuals and fits well into enteral feeding regimes.

For Dietary Supplement Makers:

Your products for mood support and sleep control provide dependable performance. High bioavailability means consistent outcomes for customers and improved flowability means easier capsule-filling and tableting operations for you.

For Animal Nutritionists:

This feed-grade additive lowers stress-related behaviour in weaned piglets and poultry in transition to high density housing. You will see greater feed intake efficiency, a better immunological response and less hostility in your livestock operations.

Quality Certifications You Can Trust

Our facility holds internationally recognized certifications that safeguard your supply chain integrity:

ISO 9001 Quality Management System Certificate – Ensures consistent process control across all production batches
HALAL Certification – Meets Islamic dietary requirements for global market access
STAR-K Kosher Certification – Complies with Jewish dietary laws for specialized product lines
FDA Registration – Guarantees alignment with U.S. regulatory standards for ingredient traceability

These L-tryptophan Bulk Powder credentials eliminate compliance uncertainties when you're entering regulated markets or serving diverse consumer bases.

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Flexible Packaging Solutions for Every Order Scale

We understand your procurement needs vary by project phase and market scale:

Package Size	Package Type	Ideal For
100g	Food-Grade Plastic + Aluminum Foil Bag	Laboratory testing & R&D evaluation
1kg	Food-Grade Plastic + Aluminum Foil Bag	Product development trials
5kg	Food-Grade Plastic + Aluminum Foil Bag	Pilot production runs
10kg	Food-Grade Plastic + Aluminum Foil Bag	Bulk trial orders
25kg	Fiber Drum (Standard Commercial)	Full-scale manufacturing operations

All packaging meets international shipping standards and protects against moisture, oxidation, and contamination during transit.

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Reliable Global Transportation Methods

Your shipment options include:

Express Courier Services – DHL, FedEx, UPS, EMS, and USPS for urgent small-batch orders (3-7 business days)

Air Cargo – Fast delivery for medium to large commercial shipments (5-10 business days)

Sea Cargo – Cost-effective solution for bulk orders exceeding 500kg (20-35 business days)

We maintain ready-stock inventory for immediate dispatch and provide DDP (Delivered Duty Paid) air and sea options to simplify your customs clearance process.

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Warehouse & Shipping

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Our Teams

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Exhibitions

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FAQ

Q: What's your minimum order quantity?

A: We accept sample orders starting at 100g and trial orders from 1kg. Standard commercial MOQ is 25kg per batch.

Q: How do you assure the purity of your products?

A: Each batch is tested by HPLC using our 5 in-house equipment, third party lab verification and fully documented COA before to shipping.

Q: How long will it last if stored properly?

A: Below 25°C for two years in sealed containers, protected from direct sunshine and moisture.

Q: Can you customize specifications for specific applications?

A: Yes, our OEM/ODM team adjusts particle size, mesh range, and packaging formats to match your production requirements.

Q: Do you provide technical support for formulation development?

A: Our experienced team offers consultation on dosage optimization, stability testing, and regulatory documentation throughout your product development cycle.

Q: What documentation do you provide with shipments?

A: Each order includes COA, batch manufacturing records, allergen statements, and certifications (ISO, Halal, Kosher) as required.

Contact Us

Ready to secure your L-tryptophan Bulk Powder supply? Reach out to our team at sales@nuoyuanbio.com for quotations, COA samples, and customized solutions today.