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Premium L-Tryptophan Supplements: Essential Amino Acid for Health & Wellness
Understanding L-Tryptophan: Is Tryptophan and L-Tryptophan the Same?
L-Tryptophan is an essential amino acid that serves as a vital precursor for several important biomolecules, including serotonin, melatonin, and niacin. When people ask “is tryptophan and l tryptophan the same“, the answer lies in stereochemistry. Tryptophan refers to the amino acid in general, while L-Tryptophan is the natural, biologically active form utilized by the human body. Our pharmaceutical-grade L-Tryptophan offers 99%+ purity, ensuring optimal bioavailability and efficacy for your formulations.
- Product Name: L-Tryptophan (L-2-Amino-3-(indol-3-yl)propionic acid)
- CAS No.: 73-22-3
- Molecular Formula: C11H12N2O2
- Molecular Weight: 204.23 g/mol
- Appearance: White to slightly yellow crystalline powder
- Assay (HPLC): ≥ 99.0%
- Specific Rotation: -30.0° ~ -33.0°
- Loss on Drying: ≤ 0.5%
- Residue on Ignition: ≤ 0.1%
- Heavy Metals (as Pb): ≤ 10 ppm
Comprehensive Specification & Quality Standards for L-Tryptophan
As a leading l tryptophan supplier from China, we maintain rigorous quality control protocols to ensure our product exceeds international standards. Our L-Tryptophan complies with USP, EP, and JP specifications, making it suitable for pharmaceutical, nutraceutical, and food-grade applications worldwide.
| Test Item | Specification | Test Method |
|---|---|---|
| Identification (IR Spectrum) | Conforms to Reference Standard | USP <197> |
| Appearance & Color | White to slightly yellow crystalline powder | Visual Comparison |
| Assay (on dried basis) | 99.0% ~ 101.0% | HPLC |
| Specific Rotation [α]20/D | -30.0° ~ -33.0° (c=1 in H₂O) | Polarimetry |
| pH (1% aqueous solution) | 5.5 ~ 7.0 | Potentiometric |
| Loss on Drying | ≤ 0.5% (105°C, 3 hours) | Gravimetric |
| Residue on Ignition (Sulfated Ash) | ≤ 0.1% | USP <281> |
| Heavy Metals (as Pb) | ≤ 10 ppm | ICP-MS / USP <231> |
| Arsenic (As) | ≤ 2 ppm | ICP-MS |
| Chloride (Cl) | ≤ 0.05% | Titration |
| Sulfate (SO₄) | ≤ 0.03% | Turbidimetric |
| Related Substances (Total Impurities) | ≤ 1.0% | HPLC |
| Solvent Residues | Complies with ICH Q3C | GC |
| Microbiological Total Plate Count | ≤ 1000 cfu/g | USP <61> |
| Yeast & Mold | ≤ 100 cfu/g | USP <61> |
| E. Coli | Negative / 10g | USP <62> |
| Salmonella | Negative / 25g | USP <62> |
Versatile Applications of L-Tryptophan Supplements
The unique biochemical properties of L-Tryptophan make it invaluable across multiple industries. From dietary supplements to functional foods and sports nutrition, our product serves diverse applications for manufacturers seeking reliable sources of l tryptophan.
1. Dietary Supplements Targeting L-Tryptophan Benefits
L-Tryptophan is fundamental in supplements designed to support mood, sleep, and cognitive function through its role as a precursor to serotonin and melatonin.
- Sleep Support Formulas: Natural precursor to melatonin, promoting healthy sleep-wake cycles.
- Mood & Emotional Wellness: Supports serotonin production for balanced mood and emotional resilience.
- Stress Management: Helps regulate stress response through neurotransmitter synthesis.
- Cognitive Function: Supports memory, focus, and overall brain health.
2. Functional Foods & Enriched Products
Incorporating L-Tryptophan into functional foods creates value-added products targeting specific health benefits, including lebensmittel tryptophan enriched products in European markets.
- Sleep-Promoting Beverages: Added to teas, drinks, and nighttime formulas.
- Mood-Enhancing Foods: Incorporated into snacks, bars, and confectionery.
- Sports Recovery Products: Combined with carbohydrates in post-exercise nutrition.
- Geriatric Nutrition: Added to foods for elderly populations to support sleep and mood.
3. Sports Nutrition Formulations
Athletes and active individuals benefit from L-Tryptophan’s role in protein synthesis, recovery, and performance optimization.
- Protein Powders & Aminos: Essential component of complete amino acid profiles.
- Recovery Formulas: Supports muscle repair and reduces exercise-induced fatigue.
- Endurance Products: May help delay fatigue during prolonged exercise.
- Sleep Recovery: Added to nighttime formulas to enhance sleep quality for athletes.
4. Sleep Aid Products & Pharmaceutical Applications
L-Tryptophan serves as a natural alternative to synthetic sleep aids, leveraging l 5 hydroxy tryptophan pathways for gentle, non-habit-forming sleep support.
- OTC Sleep Aids: Standalone or combination sleep formulas.
- Melatonin Precursor Products: Combined with other sleep-support ingredients.
- Pharmaceutical Intermediates: Raw material for 5-HTP production.
- Mental Health Support: Adjunctive support in mood disorder management.
Recommended Usage & Formulation Guidance
Proper incorporation of L-Tryptophan ensures optimal stability, bioavailability, and efficacy in finished products. Below are general guidelines; specific formulations should be developed with technical support from our team.
In Dietary Supplements
For capsule or tablet formulations: L-Tryptophan blends well with common excipients. Recommended usage: 500-1000 mg per unit dose. For powder blends: Ensure proper mixing to achieve uniform distribution. Stability is excellent when protected from light, moisture, and excessive heat.
In Functional Foods & Beverages
Solubility in water: ~1.1g/100mL at 25°C. Consider micronized versions for improved dissolution in beverages. pH stability range: 3.0-8.0. Avoid prolonged exposure to strong oxidizers and direct sunlight.
In Sports Nutrition Products
Typically combined with B vitamins (especially B6) to support conversion to serotonin. May be combined with magnesium for enhanced relaxation benefits. Stability in protein powders is excellent when stored in cool, dry conditions.
Packaging & Storage
To preserve the quality and shelf life of our premium L-Tryptophan, we offer multiple packaging options suitable for various market needs:
- Standard Packaging: 25 kg per fiber drum with double polyethylene inner bags
- Alternative Options: 20 kg or 25 kg paper bags with food-grade PE liner
- Small Quantity: 1 kg or 5 kg aluminum foil bags for R&D or small production runs
- Custom Packaging: Available upon request to meet specific customer requirements
Storage Conditions: Store in a cool, dry, well-ventilated area away from direct sunlight. Keep containers tightly closed when not in use. Recommended temperature: 15-25°C. Relative humidity: below 60%.
Shelf Life: 36 months from date of manufacture when stored under recommended conditions in original, unopened packaging.
Certifications & Quality Assurance
As a reliable china l tryptophan supplier, we maintain comprehensive quality certifications to guarantee product safety, consistency, and regulatory compliance for global markets.
ISO 9001:2015 Certified
Comprehensive Quality Management System ensuring consistent product excellence and continuous improvement.
Kosher Certified
Certified suitable for Kosher dietary requirements, expanding market accessibility worldwide.
Halal Certified
Compliance with Islamic dietary laws for Muslim-majority markets and consumers.
In addition to these certifications, our L-Tryptophan is manufactured in a GMP-compliant facility, undergoes rigorous third-party testing, and comes with full traceability documentation from raw materials to finished product. We also comply with HACCP principles and FDA regulations for export markets.
Frequently Asked Questions About L-Tryptophan
Yes, there’s an important distinction. “Tryptophan” refers to the amino acid in general, while “L-Tryptophan” specifically denotes the natural, biologically active isomer that the human body can utilize. The “L” prefix indicates the stereochemistry that matches human biochemistry. All our products are pure L-Tryptophan, ensuring maximum bioavailability.
Excellent sources of l tryptophan include turkey, chicken, eggs, cheese, nuts, seeds, soy products, and chocolate. However, for therapeutic applications or precise formulation control, purified L-Tryptophan supplements offer consistent dosage and purity that food sources cannot guarantee.
As a specialized l tryptophan supplier, we offer superior quality control (99%+ purity), comprehensive certifications, competitive pricing, reliable global logistics, and dedicated technical support. Our focus on amino acids ensures deep expertise and consistent supply chain reliability for our customers worldwide.
Typical dosages range from 500mg to 2000mg daily, often taken before bedtime for sleep benefits. For mood support, doses are typically split throughout the day. However, specific recommendations should be made by healthcare professionals based on individual needs and product formulations.
Yes, our L-Tryptophan is produced via microbial fermentation, making it 100% suitable for vegetarian and vegan formulations. We provide full documentation verifying its non-animal origin and production method.
How to Select the Right L-Tryptophan Supplier
Choosing a reliable supplier is critical for your supply chain security and product quality. Consider these key factors when evaluating l tryptophan suppliers:
1. Quality & Purity Standards
Verify third-party testing results and ensure minimum 99% purity. Check for compliance with relevant pharmacopeia standards (USP, EP, JP) and absence of contaminants.
2. Certifications & Regulatory Compliance
Ensure the supplier holds ISO, GMP, and relevant religious certifications (Kosher, Halal) for your target markets, along with necessary FDA or equivalent regulatory compliance.
3. Production Capacity & Scalability
Assess consistent supply capability and scalability to meet your growing demands without interruption, including backup production facilities.
4. Technical Support & Documentation
Choose suppliers who provide comprehensive technical support, formulation assistance, and complete documentation (CoA, MSDS, stability data).
5. Logistics & Supply Chain Reliability
Evaluate global shipping capabilities, incoterms flexibility, and proven track record of on-time delivery with proper temperature control where required.
6. Reputation & Industry Experience
Look for established suppliers with verifiable track records, positive customer testimonials, and specialization in amino acid production.
Contact Us for Premium L-Tryptophan Supply
Ready to source premium l tryptophan supplement ingredients from a trusted supplier? Contact our team today for competitive pricing, samples, or detailed technical consultations tailored to your specific needs.
📞 Phone: +86-27-8329 8801
📱 Email: contact@nutrition-ingredients.net
🌐 Website: https://nutrition-ingredients.net
🤝 Our Partner: www.srikro.com
📍 Location: Wuhan, China – Serving Global Markets Since 2010
Request your sample or quotation today and experience the quality difference with our premium L-Tryptophan.
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