L-Theanine Green Tea Extract 20%-40% HPLC Supplier
HERBSEA supplies bulk green tea leaf extract standardized to 20%-40% L-Theanine by HPLC for supplement, beverage powder, tablet, capsule, functional food and private-label formulation projects.
L-Theanine Product Path
Compare L-Theanine with Adjacent Green Tea Specifications
L-Theanine projects should confirm HPLC target, COA and grade fit before comparing broader Green Tea Extract, EGCG or instant green tea powder.
This is a specification-driven tea ingredient page.
- buyers should review assay method
- marker range
- physical properties
- microbiology
- heavy metals
- MOQ and sample availability before quote
L-Theanine Green Tea Extract Sourcing Summary
| Buyer question | Practical sourcing answer |
| What is this ingredient? | A tea-derived green tea leaf extract standardized to 20%-40% L-Theanine by HPLC. |
| Who uses it? | Supplement brands, beverage powder developers, capsule/tablet manufacturers, private-label teams and ingredient distributors. |
| What should buyers compare first? | Assay target, HPLC method, representative COA, particle size, sensory profile, documents and commercial terms. |
| How is it different from instant green tea powder? | This page focuses on L-Theanine assay and HPLC documents. Instant green tea powder focuses on tea flavor, color and beverage-base solubility. |
| What documents matter? | Specification sheet, COA, HPLC assay information, microbiology, heavy metals, residual solvent review, packing details and export documents. |
Product Nature and Assay
| Product name | Green Tea Leaf Extract L-Theanine |
| Specification direction | 20%-40% L-Theanine |
| Assay method | HPLC |
| CAS | 3081-61-6 |
| Botanical source | Camellia sinensis leaf |
| Typical form | Fine powder for B2B formulation projects |
| Common review points | Assay target, appearance, particle size, solubility, taste, COA and quality documents. |
Specification Selection: 20% vs 40% L-Theanine
Buyers should select the L-Theanine specification according to finished-product format, formula space, target marker level, taste requirements, cost target and document expectations.
The exact grade should be confirmed by current specification and representative COA.
| Specification | Typical sourcing role | Buyer notes |
| 20% L-Theanine HPLC | Tea-derived ingredient direction for powder blends, beverages or functional food concepts. | May be suitable when formula space allows a lower assay material and tea matrix characteristics are acceptable. |
| 40% L-Theanine HPLC | Higher-assay tea-derived ingredient direction for compact formulas or stronger marker requirements. | Often reviewed when formula space, marker level or internal specification requires a higher assay range. |
| Project-specific target | Customized direction discussed by application and order quantity. | Confirm feasibility, MOQ, lead time and documents before sample request. |
L-Theanine Ingredient Sourcing Checklist
Use this checklist when comparing bulk green tea leaf extract standardized to L-Theanine by HPLC. It helps sourcing, R&D and quality teams align the specification before requesting samples or a quote.
| Buyer checkpoint | What to confirm |
| Assay target | 20%, 40% or project-specific L-Theanine range confirmed by HPLC. |
| Analytical method | HPLC method, marker calculation, representative COA and specification sheet. |
| Application | Beverage powder, capsule, tablet, functional food or custom powder blend. |
| Sensory profile | Taste, color, odor and compatibility with tea, flavor, sweetener or mineral systems. |
| Physical properties | Particle size, flowability, bulk density and blend behavior for the target format. |
| Quality documents | COA, specification, microbiology, heavy metals, residual solvent review and export documents. |
| Commercial planning | MOQ, lead time, sample quantity, packaging size, annual demand and destination market. |
L-Theanine Extract vs Instant Green Tea Powder
| Page / ingredient | Main sourcing purpose | Best-fit buyer intent |
| L-Theanine Green Tea Extract 20%-40% HPLC | Standardized L-Theanine assay, HPLC review and COA-based quality approval. | Buyers searching for L-Theanine 20% HPLC, L-Theanine 40% HPLC, tea-derived L-Theanine extract or assay documents. |
| Instant Green Tea Powder | Green tea flavor, color, beverage-base solubility and sensory performance. | Buyers searching for instant green tea powder, green tea instant powder or RTD green tea ingredient. |
| EGCG 98% | High-purity green tea catechin ingredient for standardized projects. | Buyers searching for pure EGCG powder, EGCG 98% or high-purity green tea catechin. |
Quality Control and Documents
Review these points before RFQ.
- Each sourcing project can be reviewed against assay
- heavy metals
- microbiology and residual solvent limits. Buyers can request a COA
- specification sheet
- HPLC assay information
- production flow chart and supporting quality documents for internal approval
Compare these points before RFQ.
- For commercial projects
- confirm the destination market
- target finished-product format
- internal specification
- required certificates and packaging needs before final quote. This helps match the L-Theanine extract grade with the buyer’s formulation
- quality system and import documents process
Application Scenarios
- Ready-to-mix beverage powders needing clean taste and verified L-Theanine content.
- Capsules and tablets where assay, particle size and flow properties matter.
- Functional food projects where color, taste and process compatibility need early testing.
- Private-label projects needing stable supply and documents support.
Related Tea Ingredient Pages
- Instant Tea Powder Supplier — compare black tea, green tea, matcha, oolong, EGCG and tea-derived ingredients.
- Instant Green Tea Powder — review a soluble green tea powder option for beverage and dry mix projects.
- L-Theanine in Green Tea Extract HPLC & COA Guide — review assay and document questions for sourcing teams.
- EGCG 98% — review a high-purity green tea catechin ingredient.
- Bulk Instant Tea Powder Supplier Guide — compare broader tea powder supplier checkpoints.
HERBSEA can discuss green tea leaf extract standardized to 20%-40% L-Theanine by HPLC. Buyers should confirm the target assay range, method, application, sample quantity and quality document requirements before quote.
Common documents include COA, specification sheet, HPLC assay information, microbiology, heavy metals, residual solvent review, production flow information, packaging details and export documents where applicable.
L-Theanine green tea extract is selected for standardized L-Theanine assay and HPLC documents. Instant green tea powder is selected mainly for green tea flavor, color, beverage-base solubility and sensory profile.
B2B buyers may review this ingredient for beverage powders, capsules, tablets, functional food concepts and powder blends that require a documented L-Theanine specification and batch-level quality records.
Include the target assay, finished-product format, estimated annual volume, packaging preference, destination country, sample request and required documents such as COA, specification sheet and HPLC method information.
Partner With HERBSEA
Send your target specification, annual demand estimate, destination market, packaging preference and sample request.
HERBSEA will confirm MOQ, lead time, sample availability and specification fit for bulk L-Theanine green tea extract.
Related Tea Powder Supplier Pages
- instant tea powder supplier – Review bulk instant tea powder options for RTD tea, milk tea, instant drink and food manufacturing projects.
- instant black tea powder supplier – Check black tea powder specifications, COA, sample testing, MOQ and packaging before RFQ.
L-Theanine Green Tea Extract 20%-40% HPLC Supplier Sourcing Review
For B2B sourcing, L-Theanine Green Tea Extract 20%-40% HPLC Supplier should be reviewed as a bulk instant tea powder with a clear specification, sample plan and document checklist.
HERBSEA supports sourcing teams, supplement brands, beverage developers and private label buyers that need stable supply, batch documents and responsive quote communication.
| Buyer review area | What to confirm before ordering |
|---|---|
| Specification fit | Confirm solubility, color, taste profile, caffeine direction, tea solids, carrier status and beverage process fit against your internal purchasing brief. |
| Sample review | Check appearance, odor, flowability, blending behavior and process fit in the target product format. |
| Quality documents | Request COA, specification sheet, available test data, packing details and export document support before approval. |
| Commercial planning | Confirm MOQ, lead time, packaging, shipment terms, destination market requirements and reorder expectations. |
Application Fit and Sample Testing
Include these details in the RFQ.
- Common product uses for this ingredient include RTD tea
- iced tea systems
- milk tea powders
- foodservice drink mixes. Before approval
- buyers should test the sample in the real formula or process instead of relying only on a name match. Color
- particle size
- carrier selection and packing format can affect production handling and finished-product consistency
- Define the target assay, extract ratio or physical specification needed by the project.
- Share the finished-product format so HERBSEA can recommend a practical sample direction.
- Review COA data, microbiology, heavy metals, moisture and packing information before approval.
- Keep sample labels, batch numbers, quote notes and document files together for reorder review.
Batch Consistency and Documents
For repeat purchasing, the approved sample should connect clearly with the commercial batch.
- Sourcing teams can keep a simple record that includes supplier item name, batch number, specification version, COA file, packing photo, sample feedback and final quote.
- This makes reorder checks easier and helps the buyer confirm whether a later batch follows the same sourcing brief.
If your project has a custom requirement, share it before sample dispatch.
HERBSEA can review whether the requested document set, packing format, label wording, shipment timing and sample quantity are practical for the selected instant tea powder specification.
Related Sourcing Links
Compare related materials in the Instant Tea Powder category, or send an RFQ through the contact plant extract supplier page.
Include the product name, specification target, sample quantity, order volume, destination country and document requirements so the HERBSEA team can reply with the most relevant sourcing option.
FAQ: L-Theanine Green Tea Extract 20%-40% HPLC Supplier Bulk Supply
Share the target specification, application format, estimated order quantity, destination market, packaging preference, sample request and required documents.
This helps HERBSEA match the material and quote to the project.
Sample support and COA review are available for many qualified B2B projects. Buyers can confirm the grade, specification fit, packing format and document set before moving to a commercial order.
Compare identity, assay method, specification range, batch consistency, particle size, documents, MOQ, lead time, packaging and communication quality. Unit price should be reviewed together with these sourcing factors.
Related Bulk Ingredient Sourcing Tools
Use these HERBSEA buyer resources to compare product pages, prepare COA and sample requests, and organize RFQ details before contacting the supplier team.
- Bulk Ingredient Product Finder for supplier, COA, sample, MOQ and RFQ paths across HERBSEA product pages.
- Ingredient Sourcing Resource Center for procurement templates, export documentation and supplier audit checklists.
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- Instant Tea Powder Supplier hub for related HERBSEA ingredient options.
