L-Theanine Powder
Lifeworth supplies L-Theanine Powder for commercial ingredient sourcing, with green tea-derived specification options, HPLC-based assay review, technical documentation, evaluation samples, and bulk export support for supplement and beverage projects.
Proof Points
- L-Theanine Powder for Bulk Supply
- Green Tea-Derived Specification Options
- HPLC Assay & Specification Review
- COA, TDS & SDS Support
- Sample & Bulk Export Supply
Tell us your application, target specification, and destination market so we can support grade selection, documentation review, and packaging recommendations.

Quick Specs
Identity
INCI Name
Alias
CAS Number
Quality
Assay
Grade
Standards
Assay Method
Handling
Appearance
Form
Solubility
Applications
Commercial Terms
MOQ
MOQ depends on packaging and specification.
Lead Time
3–7 working days for standard items; bulk orders by schedule.
Incoterms
EXW / FOB / CIF / DAP / DDP
Sample
Free sample (shipping charged)
Quality & Documents
COA (per batch) • SDS/MSDS • TDS/Spec sheet (on request). Additional statements depend on product and market.
Product Overview
Green Tea L-Theanine Powder is a green tea-derived amino acid ingredient commonly used in supplement, beverage, and multi-ingredient formulation projects.
It is typically sourced when buyers want clearer L-theanine positioning, more defined source-route discussion, and a product identity that is distinct from broader green tea extract, polyphenol, or EGCG materials.
Commercial evaluation usually focuses on theanine specification, source route, caffeine-related control, application format, and documentation support.

Applications
Dietary Supplements
L-Theanine Powder is commonly considered for capsules, tablets, sachets, stick packs, and nutritional powder blends. Buyers should select the appropriate source route and assay according to dosage design, formulation positioning, and finished-product requirements.
Functional Beverages & RTD Products
L-Theanine may be used in functional beverages, powdered drinks, and RTD systems where water solubility, flavor compatibility, clarity, and interaction with caffeine or other functional ingredients are important. Green tea-derived specifications may require additional sensory and color evaluation.
Premixes & Multi-Ingredient Formulations
L-Theanine can be incorporated into premixes and multi-active systems together with amino acids, botanicals, minerals, sweeteners, and other formulation components. Compatibility, blend uniformity, and finished-product stability should be confirmed during pilot evaluation.
Selected Food & Functional Formulations
L-Theanine may also be considered for selected food and functional-product applications according to applicable market requirements. The selected specification should be reviewed together with dosage format, processing conditions, sensory impact, and destination-market compliance.
How to Choose the Right Grade / Form
Source Route
L-Theanine may be supplied through different commercial sourcing routes, including green tea-derived extract specifications and high-purity L-Theanine ingredients. Buyers should confirm the required source route according to product positioning, formulation requirements, customer claims, and destination-market expectations.
Assay & Analytical Basis
The stated L-Theanine percentage should be reviewed together with the analytical method and specification basis. HPLC is commonly used for L-Theanine determination, and quotations, evaluation samples, and commercial batches should be compared using the same agreed assay method and release specification.
Caffeine & Tea-Extract Background
For green tea-derived L-Theanine products, buyers may also need to review residual caffeine, tea-polyphenol or catechin background, color, taste, and other extract-related characteristics. These factors may affect suitability for beverages, powders, capsules, or formulations where sensory performance is important.
High-Purity L-Theanine Requirements
For high-purity L-Theanine projects, buyers should focus on assay, identity, moisture, solubility, impurity profile, and batch consistency. High-purity material should not be assumed to have the same composition or formulation behavior as a standardized green tea extract containing L-Theanine.
Technical & Formulation Notes
Technical Notes
L-Theanine sourcing should be reviewed according to source route, assay level, analytical basis, and intended application. For green tea-derived specifications, buyers may also need to evaluate residual caffeine, tea-related background components, color, and sensory characteristics in addition to the stated L-Theanine content.
Manufacturing & Process
Green tea-derived L-Theanine products are produced through extraction and purification steps designed to concentrate L-Theanine from tea-derived raw materials, while high-purity L-Theanine may involve further purification according to the target specification. Exact processing routes vary by supplier, source route, and purity requirement.
Compatibility / Formulation Notes
Capsules, Tablets & Powder Blends
For capsules, tablets, sachets, and nutritional powder blends, buyers should review particle characteristics, flowability, moisture condition, blending behavior, and batch consistency. The selected L-Theanine specification should be compatible with the intended dosage form and inclusion level.
Beverages & RTD Systems
For beverage and RTD applications, evaluate water solubility, clarity, flavor contribution, pH conditions, processing temperature, and interaction with caffeine or other functional ingredients. Green tea-derived extract specifications may require additional review of color, taste, and residual tea components.
Premix & Functional Ingredient Systems
For premixes or multi-ingredient systems, formulation teams should evaluate compatibility with amino acids, minerals, botanicals, sweeteners, and other active ingredients. Pilot testing is recommended when clarity, taste, or stability is critical.
Processing & Handling
Avoid unnecessary moisture exposure and prolonged open-air handling. Processing temperature, pH, and storage conditions should be reviewed according to the selected specification and supplier technical data.
Extended QC & Test Items
Technical evaluation may include L-Theanine assay, identification, moisture, caffeine, related tea components, microbiological limits, heavy metals, and other agreed quality items according to the selected specification. Batch COA and supporting technical documents should be reviewed against the approved purchasing requirement before commercial supply.
Product specifications
| Test | Specification | Method |
|---|---|---|
| Appearance | White to off-white powder | Visual |
| Source | Green tea extract route | Reference |
| CAS No. | 3081-61-6 | Reference |
| Assay Basis | L-theanine specification | Per agreed specification |
| Solubility | According to grade / application | Per specification |
| Documents | COA per batch; SDS/MSDS and TDS available | Reference |
Storage, Shelf Life & Packaging
Storage
Store in a cool, dry place in tightly sealed containers.
Protect from moisture, direct light, and strong odor sources during storage and transportation.
Shelf Life
Shelf life is typically provided according to the agreed specification and original packing condition.
Packaging integrity and storage compliance should be checked before use.
Packaging & Logistics
Sample Packing
Sample quantities can be discussed for preliminary technical review, formulation testing, and sourcing evaluation.
Bulk Packing
Commercial supply is typically arranged in standard export packing suitable for ingredient transport and bulk shipment.
Customization
Specification direction, packing format, and supply arrangement can be discussed according to project type, target purity direction, and purchasing plan.
Logistics & Documents
COA, SDS/MSDS, TDS/specification sheet, and related commercial documents can be provided according to the agreed product route and order requirements.

Supply, Documentation & Customization
Documents & Compliance
COA, SDS/MSDS, and TDS/spec sheet available based on product and market requirements.
Customization & Private Label
Custom packing, private label, and labeling support available depending on product type and order scope.
Commercial Support
Sample, lead time, and incoterm options can be discussed according to destination market and supply plan.
Why Source From Lifeworth
Source-Route & Specification Clarity
We help buyers clarify whether the project requires a green tea-derived L-Theanine specification or a high-purity L-Theanine ingredient before quotation and sampling.
Assay & Caffeine Matching
For green tea-derived projects, L-Theanine assay should be reviewed together with caffeine, sensory characteristics, and other extract-related parameters. We coordinate suitable specification options according to the intended formulation and purchasing requirement.
Batch Documentation Support
Commercial batches can be supported with available COA, TDS, SDS / MSDS, assay information, and related technical documentation for supplier qualification, incoming inspection, and internal quality review.
Sample-to-Bulk Export Coordination
Evaluation samples can be arranged before commercial purchasing, with follow-up support for specification confirmation, bulk packing, labeling, export documentation, and international shipment coordination.

FAQ
What is the difference between green tea-derived L-Theanine and high-purity L-Theanine?
Green tea-derived L-Theanine may be supplied as a standardized tea extract containing L-Theanine together with other tea-related components, while high-purity L-Theanine is supplied as a more purified ingredient with a much higher L-Theanine assay. The suitable route depends on formulation, product positioning, sensory requirements, and specification targets.
What L-Theanine assay specifications are available?
L-Theanine can be supplied according to different assay requirements depending on the source route and commercial specification. Buyers should confirm the target percentage together with the HPLC method, source basis, and application requirements before quotation and sampling.
How should caffeine be reviewed in green tea-derived L-Theanine?
For green tea-derived products, residual caffeine should be reviewed together with L-Theanine assay, tea-polyphenol background, color, taste, and other extract characteristics. Low-caffeine or caffeine-controlled requirements should be defined before supplier approval.
Is L-Theanine soluble in water?
High-purity L-Theanine is water soluble and can be used in suitable beverage, premix, and nutritional systems. For green tea-derived extract specifications, clarity, dispersion, and sensory behavior should be evaluated according to the full extract composition.
Is L-Theanine suitable for RTD beverages?
Yes, L-Theanine may be considered for RTD and other beverage formulations. Formulators should review solubility, pH, flavor system, processing temperature, clarity, interaction with caffeine, and finished-product stability before commercial scale-up.
What documents can Lifeworth provide?
Available support may include COA, TDS, SDS / MSDS, product specification, assay information, packaging details, and other quality or technical documents according to the selected L-Theanine specification.
Can Lifeworth provide samples and bulk export supply?
Yes. Evaluation samples can be arranged for formulation testing and supplier qualification, with follow-up support for bulk packaging, labeling, export documentation, and international shipment coordination.
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