L-Theanine Powder
Sunjoy Supplies Bulk L-Theanine Powder for Your Healthcare Products
- CAS Number: 3081-61-6
- EINECS Number: 221-379-0
- Molecular Weight: 174.2
- Molecular Formula: C7H14N2O3
- Chemical Name: L-Theanine
- Related Name: Theanine, N-Ethyl-L-glutamine, 2-Amino-4-(ethylcarbamoyl)butanoic acid
- Appearance: White, odorless powder
What Is L-Theanine Powder?
L-Theanine powder is a unique amino acid that mainly exists in tea leaves, especially green tea, and some mushrooms. It can help adjust the mind to become calm and relaxed without causing drowsiness. These effects make it a popular ingredient for healthcare and supplement products.
L-Theanine penetrates the blood-brain barrier to modulate neurotransmitters. It can increase GABA, dopamine, serotonin, and other calming neurotransmitters. Meanwhile, it also blocks excitatory glutamate receptors. In this way, L-Theanine helps relieve stress and boost focus. Many healthcare brands utilize this feature to develop clean-label nootropics and relaxation formulas.
Functions of Our L-Theanine Powder
L-Theanine powder can cross the blood-brain barrier and act directly on the nervous pathways. It maintains a balanced mental condition without causing sedation. L-Theanine helps the human body handle psychological pressure and mental fatigue by promoting alpha brain wave activity.
We recommend using our high-purity L-Theanine powder in your cognitive and stress-managing formulations. It promotes overall nervous health and mood stability and therefore provides a practical option for cognitive function support and stress-relieving dietary supplements.
L-Theanine powder can regulate key neurotransmitters including GABA, dopamine, and serotonin. This helps the brain maintain stable cognitive performance under high mental pressure. The mechanism supports attention stability and coordinates with mental tasks efficiently.
You can utilize our high-purity L-Theanine powder in your specific formulations to support sustained concentration and productivity. It is a practical ingredient in daily cognitive health products.
L-Theanine works synergistically with caffeine. L-Theanine powder can gently moderate the side effects caused by caffeine while maintaining alertness and attention span.
This golden duo helps maintain ideal cognitive functions during long-period tasks.
You can suggest your consumers take pharmaceutical-grade L-theanine supplements before using energy supplements or pre-workout blends. It helps maintain balanced mental energy without overstimulation.
L-Theanine powder helps alleviate mental stress and promotes relaxation in the normal sleeping mode. It can promote overall rest quality without inducing residual morning grogginess.
You can apply this ingredient in your nighttime products as a reliable ingredient for nighttime relaxation and physical function recovery.
More About Our Company
- Professional Bulk L-Theanine Powder Supplier
- Features
- Manufacturing
- Specification
- Fully experienced in manufacturing L-Theanine Powder since 2017
- Trusted by global brands across over 50 countries with our GMP-certified facility
- 10g to 20g free samples available for lab testing
- Flexible MOQ of 25kg, pricing tiers start from 100kg
- GMP, FDA, and SQF Certified to support your global business
High Purity and Guaranteed L-Isomer Ratio: Multiple purification processes to yield L-Theanine powder of over 98% assay verified for superior L-enantiomeric purity. Strictly eliminated D-isomers and residual impurities ensure maximized biological efficacy.
Excellent Flowability: Excellent free-flowing properties for your smooth production. Effectively prevents caking and bridging during high-speed capsule filling and direct tablet compression.
Organoleptic Excellence: Utilizes an advanced refining process for a white appearance and neutral taste. Minimizes flavor-masking challenges in the formulation of premium products, such as gummies, chewing tablets, and functional beverages.
Uncompromised Batch Consistency: With our stable industrial manufacturing capacity, we maintain strict control over critical quality attributes. This ensures consistent ingredient quality and uniform potency to greatly reduce QC risks of your final products.
Step 1: Upstream Preparation: The microbial strains undergo processes of systematic activation and shake-flask cultivation. Then the materials are transferred into the seed tanks for scaled-up cultivation.
The raw materials are precisely formulated into seed and fermentation culture media. Meanwhile, the high-altitude air is captured, compressed via the air compressors, and purified with an air cleaning system. In this way, the air is transferred into sterile air for fermentation.
Step 2: Core Fermentation Process: We introduce the seed culture, fermentation culture media, and sterile air into the fermenters. The conditions, including temperature, pH, and dissolved oxygen, are strictly controlled for efficient microbial biomass and L-Theanine biosynthesis.
Step 3: Primary Separation and Decolorization: The harvested fermentation broth first passes through the ceramic membrane filtration to efficiently remove the cells, mycelium, and solid impurities. Then the liquid undergoes decolorization to remove pigments.
Step 4: Concentration and Crude Extraction: The decolorized clear liquid undergoes a concentration process. Then it passes through a crude product centrifugation to isolate the solid from the liquid. In this way, we get the solid L-Theanine intermediate.
Step 5: Refining and Crystallization: The crude product is redissolved to remove residual impurities and undergoes concentration and precise centrifugation once again. In this way, the purity of the product is significantly improved.
Step 6: Drying and Packaging: The refined product undergoes a drying process to thoroughly remove the moisture. After multiple crushing and sieving processes, the fine powder is packed in a cleanroom with food-grade PE bags, aluminium foil bags, and cardboard drums.
| L-Theanine Powder Production Process | |||
| Step | Process Stage | Key Operation | Equipment |
| Step 1 | Upstream Prep | Strain activation and sterile air supply | Shakers and Air Cleaning System |
| Step 2 | Core Fermentation | Biological fermentation and parameter control | Industrial Fermenter |
| Step 3 | Separation and Decolorization | Ceramic membrane filtration and pigment removal | Ceramic Membrane and Decolorization Unit |
| Step 4 | Concentration and Extraction | Evaporative concentration and crude centrifugation | Evaporative Concentrator and Crude Centrifuge |
| Step 5 | Refining and Crystallization | Product resolubilization and precision centrifugation | Resolubilization Tank and Refined Centrifuge |
| Step 6 | Drying and Packaging | Moisture evaporation drying and sterile sealing | Drying Equipment and Automatic Packaging Machine |
| L-Theanine Powder COA | |
| Item | Specifications |
| Assay | 98.5% ~ 101.5% |
| [α]20/D (C=1, H2O) Specific rotation(a)D20 | +7.7° ~ +8.5° |
| State of solution | ≥98.0% |
| PH | 4.5 ~ 6.0 |
| Loss on drying | ≤1.50% |
| Residue on ignition | ≤0.10% |
| Aerobic Plate Count | ≤1000 CFU/g |
| Appearance | White powder |
| MOQs | 25 kg/ drum |
| Sample | Available (10-20 g/ bag) |
Related Products
Pyrroloquinoline Quinone (PQQ) powder supports cognitive functions and protects cells from oxidative damage. L-Theanine powder helps relax and reduce mental stress without causing sleepiness.
We recommend applying both of these ingredients in your premium cognitive support products. They can promote mental clarity and support energy balance.
Branched-Chain Amino Acids Powder (BCAA) supports muscle recovery and athletic performance. L-Theanine powder enhances mental focus before sports.
You can apply them in your sports nutritional supplements and market the functions of smooth energy delivery and focused physical endurance in your product promotions.
Magnesium Glycinate powder can promote muscle relaxation and support healthy sleep quality. L-Theanine powder can help calm the mind before sleep and relieve daily mental stress.
We suggest combining these ingredients as a golden duo in your sleep support and stress-relief formulations. You can highlight the functions of comprehensive mind-body relaxation and restorative rest in promotions.
Calcium L-5-Methyltetrahydrofolate powder supports healthy methylation processes and functions of the nervous system. L-Theanine powder supports a calm mind and overall mental health.
You can apply them in your premium mental health products and target nervous system wellness and mood balance functions.
Sunjoy provides a complete regulatory documentation package for every batch of our wholesale L-theanine powder for manufacturing. In this way, we simplify your internal QA audits and vendor qualification.
| Compliance and Documentation Standards | |
| Compliance Item | Standard / Status |
| Pharmacopeia Compliance | USP / EP Compliant |
| Safety and TSE/BSE | BSE / TSE-Free |
| Genetically Modified Organisms | Non-GMO |
| Allergen and Residual Solvents | Allergen-Free and ICH Q3C Compliant |
Our standard packaging forms are aluminium foil bags for small trial orders like 10kg and cardboard drums for bulk orders over 25kg. We seal our L-Theanine powder within food-grade PE bags inside the packaging.
The standard lead time depends on the volume. For orders within 100kg, we arrange shipments 5 to 7 business days after successful payment. For Ton-scale orders, the standard lead time is 15 to 20 business days after payment confirmation.
Yes. Sunjoy L-Theanine powder is produced by the advanced microbial fermentation process with selected microbial strains and optimized culture media. We guarantee a biologically active form of 100% L-Isomer.
You can check the production processes below for detailed information.
L-Theanine powder should be placed in a cool, dry place and away from thermal sources. The ideal storage temperature is below 25°C (77°F). It should be kept away from high-temperature environments to prevent accelerated degradation.
L-Theanine powder is hygroscopic and vulnerable to moisture. This means it may cake and degrade in humid environments. It needs to be tightly sealed in an airtight container for low relative humidity.
We highly recommend storing L-theanine powder in opaque containers to avoid direct sunlight. Oxygen and UV light exposure can lead to loss of potency.
Under proper storage conditions, the shelf life of L-Theanine powder is about 2 to 3 years.
L-theanine is a water-soluble amino acid. It can be dissolved directly and easily in liquid-based beverage systems and aqueous solutions during manufacturing. The excellent flowability allows it to be easily mixed in the dry beverage premixes or directly added into the liquid streams.
Beverage Processing
Pure L-theanine raw material shows excellent stability under neutral to mildly acidic conditions (pH 3–7). But in highly acidic beverages (pH 2–3), the degradation rate under thermo-oxidative stress increases significantly. It is not ideal for high-acid liquid formulations.
Although our L-theanine powder can resist ordinary production temperatures. In low pH liquid matrices, when it is processed through pasteurization or sterilization that exposes it to high heat, L-Theanine converts into glutamic acid and ethylamine.
Pet Food Processing
L-theanine is relatively stable during standard mixing and coating stages. Extreme thermal processing methods, such as high-temperature meat or kibble extrusion and high-pressure retort sterilization, can lead to the loss of the active ingredient. If your production line involves these methods, processing parameters and master formulations must be carefully evaluated.
We suggest accounting for processing degradation or applying L-Theanine powder in the post-extrusion topical.
| Parameter and Characteristic Reference | ||
| Parameter / Processing Stage | Characteristics and Values | Impact and Processing Guidelines |
| Aqueous Solubility | Freely soluble in water (exceeding 200 g/L at room temperature) and insoluble in non-polar organic solvents. | Ideal for clear beverages, syrups, and liquid drops without leaving residues. |
| pH Stability Range | Stable in pH 3.0 – 7.0 | Optimal for most functional drinks, teas, and milk alternatives. High acid (pH < 3) requires refrigeration or faster turnover. |
| Thermal Tolerance | Stable up to 80°C – 100°C for short durations; thermal degradation accelerates above 120°C. | Suitable for standard pasteurization. Extreme UHT or high-pressure canning requires overage formulation. |
| Extrusion Compatibility (Pet Food) | Moderate tolerance to standard single/twin-screw kibble extrusion (core temp ≤120∘C). | Direct dry-mix extrusion may cause partial loss; post-extrusion fat/flavor coating spraying is recommended for high-retention targets. |
| Hygroscopicity | Mild to Moderate | Requires moisture-barrier multi-layer packaging (e.g., PE-lined fiber drums or foil bags) to prevent clumping. |
Contact Us
Looking for bulk L-Theanine Powder for your supplements and nutrition foods? Sunjoy guarantees on-time delivery with a large-scale production line and full experience. Contact us today and request a free sample, COA, and custom pricing tier.
