Ureda Naturals manufactures L-Theanine in 98.5%–101.5%, TH40, TH30 and TH20 specifications. The available grades support capsules, tablets, powdered beverages, functional foods and beverage formulations with different requirements for active concentration, formula space, colour and source positioning.
| CAS No | 3081-61-6 |
|---|---|
| Available Assays | 98.5%–101.5%, ≥40%, ≥30%, ≥20% |
| Form | Crystalline powder or powder |
| MOQ | 1 kg |
Ureda Naturals manufactures high-assay crystalline L-Theanine and tea-source L-Theanine powders for dietary supplements, powdered beverages, functional foods and beverage formulations. Available specifications include 98.5%–101.5%, TH40, TH30 and TH20.
These specifications are not interchangeable on a weight-for-weight basis. Their different L-Theanine concentrations affect raw-material dosage, capsule or tablet loading, beverage colour, sensory contribution and the cost of delivering a specified amount of L-Theanine.
| Specification | L-Theanine Assay | Appearance | Practical Selection |
|---|---|---|---|
| 98.5%–101.5% | 98.5%–101.5% | White or slightly yellowish crystalline powder | Low-dose formulas, capsules, tablets and products requiring minimal non-active powder contribution |
| TH40 | ≥40.0% | Pale yellow to light brown or tea-brown powder | Concentrated tea-source positioning with lower inclusion than TH20 or TH30 |
| TH30 | ≥30.0% | Pale yellow to light brown or tea-brown powder | Powdered beverages, solid drinks and supplement blends requiring a middle assay range |
| TH20 | ≥20.0% | Pale yellow to light brown or tea-brown powder | Formulas prioritising tea-source positioning where higher powder inclusion is acceptable |
The 98.5%–101.5% grade provides the highest concentration and the lowest raw-material contribution for a given L-Theanine target. TH20, TH30 and TH40 provide tea-source options at different assay levels, allowing formulators to balance ingredient positioning, dosage, appearance and available formula space.
A kilogram price alone does not show the actual formulation cost. Buyers should compare the amount and cost of powder required to deliver the same quantity of L-Theanine.
| Specification | Calculation Basis | Powder Required |
|---|---|---|
| 98.5% minimum assay | 100 mg ÷ 0.985 | Approximately 101.5 mg |
| TH40 | 100 mg ÷ 0.40 | 250 mg |
| TH30 | 100 mg ÷ 0.30 | Approximately 333.3 mg |
| TH20 | 100 mg ÷ 0.20 | 500 mg |
Delivering 100 mg of L-Theanine from TH20 requires nearly five times as much powder as the 98.5% minimum-assay grade. This difference affects capsule capacity, tablet weight, sachet weight, excipient space and the amount of flavour adjustment required in a beverage.
For capsules, tablets and compact stick packs, the higher-assay grade leaves more room for other active ingredients and excipients. For powdered beverages and larger serving formats, TH20–TH40 may remain practical when tea-source positioning and the resulting sensory profile fit the product concept.
| Test Item | Specification | Result |
|---|---|---|
| Appearance | White or slightly yellowish crystalline granules or crystalline powder | White crystalline powder |
| Specific rotation | +7.7° to +8.5° | +8.0° |
| Solution appearance | Clear and colourless | Clear and colourless |
| Loss on drying | ≤1.5% | 0.21% |
| Residue on ignition | ≤0.2% | 0.01% |
| Assay | 98.5%–101.5% | 99.65% |
| pH | 4.5–6.0 | 5.07 |
| Chloride | ≤0.02% | <0.02% |
| Sulphate | ≤0.02% | <0.02% |
| Particle size | ≥90% through 80 mesh | 92.4% |
| Heavy metals | ≤10 ppm | <10 ppm |
| Arsenic | ≤1 ppm | Not detected |
| Total plate count | ≤3,000 CFU/g | 400 CFU/g |
| Yeast and mould | ≤100 CFU/g | 20 CFU/g |
| Coliforms | Negative | Not detected |
| Salmonella | Negative | Not detected |
| Staphylococcus aureus | Negative | Not detected |
Assay determines how much raw material must be added to reach the declared L-Theanine level. A higher-assay grade reduces total powder loading, which is particularly valuable in capsules, tablets, concentrated sachets and multi-active formulas.
The lower-assay TH grades contribute more material at the same L-Theanine target. Their higher inclusion rate should therefore be considered when calculating serving size, excipient space and finished-product weight.
Specific rotation is an identity-related parameter used to confirm the L-form of the amino acid. It supports incoming-material identification when assessed with assay, appearance and the other release parameters. It is a raw-material quality attribute rather than a finished-product performance claim.
The clear and colourless solution result of the 98.5%–101.5% grade is relevant when screening ingredients for transparent or lightly coloured beverages.
After the complete formula is prepared, check clarity, colour, sediment and L-Theanine content through the intended mixing, thermal-processing and storage sequence.
The particle-size specification is particularly relevant when L-Theanine is used at a low inclusion rate in a dry blend. Differences in particle size or density between L-Theanine and the main carrier can encourage segregation during transfer, vibration or hopper discharge.
For tablets, capsules and small-dose sachets, assess particle size together with the carrier system, premixing sequence, blender loading and final blend-uniformity results.
High-assay L-Theanine is the more efficient option when the target dose must fit inside a restricted tablet weight or capsule volume.
When L-Theanine represents only a small proportion of a multi-ingredient formula, direct addition to the complete blend can produce local concentration differences. Premix it with a compatible portion of the carrier using geometric dilution before incorporating the premix into the main batch.
During pilot production, monitor:
These observations determine whether the selected grade and blending sequence are suitable for production scale.
The 98.5%–101.5% grade minimises powder loading and leaves more formulation space for flavours, acids, sweeteners and other active ingredients. TH20–TH40 require higher addition levels and can make a greater contribution to powder colour and sensory character.
A practical trial should compare:
Add L-Theanine under the intended water composition, pH and ingredient order. Evaluate the complete formula before and after the actual thermal process rather than relying only on the appearance of a simple raw-material solution.
The pilot evaluation should record:
A reliable quotation comparison should use delivered L-Theanine rather than raw-material price alone. For each offer, calculate:
A lower price per kilogram can produce a higher cost per delivered gram of L-Theanine when the assay is substantially lower. It may also increase finished-product weight and reduce the space available for other ingredients.
The appropriate specification depends on the required active dose, formula space, desired source positioning, finished-product colour and processing format.
Available quality and technical documentation may include:
Ureda Naturals supports quality and supply-chain review through GMP, FSSC 22000, ISO 9001 and HACCP systems, together with applicable Halal and Kosher documentation.
The main difference is the amount of powder required to deliver the same L-Theanine dose. At their minimum assay values, approximately 101.5 mg of the 98.5% grade, 250 mg of TH40, 333.3 mg of TH30 or 500 mg of TH20 is required to provide 100 mg of L-Theanine. This changes formula space, finished-unit weight, sensory contribution and cost per unit of delivered L-Theanine.
The 98.5%–101.5% grade is generally the more efficient choice for compact capsules, tablets and multi-active formulas because it delivers the target amount with the lowest raw-material weight. TH20–TH40 are more appropriate when tea-source positioning is required and the formulation can accommodate a higher inclusion rate.
Premix L-Theanine with a compatible portion of the carrier using geometric dilution before adding it to the main blend. During pilot production, sample the blend from multiple locations and check finished-unit content uniformity, powder flow and fill-weight variation. These results show whether the premixing sequence and selected material grade are suitable for production scale.
Check dissolution during the actual addition step, followed by clarity, colour and sediment after the complete formula is prepared. Repeat these observations after the intended thermal process and during storage, while measuring L-Theanine content at the stages relevant to the product’s release and stability programme.
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