L-Theanine Powder is a naturally occurring non-protein amino acid primarily found in the leaves of Camellia sinensis (green tea), where it coexists with key tea compounds such as catechins and other polyphenols. It is one of the characteristic functional components of tea, contributing to its unique balance of relaxation and clarity. Known for its ability to promote relaxation without drowsiness, L-Theanine is widely used in modern nutritional formulations focused on cognitive balance, stress support, and calm mental performance. As a versatile functional ingredient, Theanine Powder is commonly incorporated into nootropic blends, functional beverages, and wellness products designed to support focus and daily performance.
Natural Field supplies pure L-Theanine powder manufactured under consistent batch quality and reliable formulation performance. Its excellent solubility and neutral taste make it highly suitable for capsules, powders, beverages, and multi-ingredient systems.
L-Theanine CAS No: 3081-61-6
Molecular Weight: 174.20
Specification: Natural 2%
| Product name | L-Theanine Powder |
| Grade | Food grade |
| Specification | Natural 2% |
| CAS | 3081-61-6 |
| Molecular Weight | 174.2 |
| Appearance | White powder |
| Application | Antioxidant properties, cognitive function improvement, ingredients for immune system |
| Certificate | FSSC22000/HACCP/SKS/ISO9001/SC/ISO22000/HALAL |
| Brand | Natural Field |
| Shelf life | 24 months |
| Soluble | Soluble in DMSO and ethanol, almost insoluble in water. |
L-Theanine is a naturally occurring amino acid found in tea leaves, particularly green tea. It is widely recognized for its unique ability to promote relaxation while maintaining mental alertness, making it a valuable ingredient in cognitive and wellness formulations.
Relaxed Alertness Support: L-Theanine is associated with increased alpha brain wave activity, supporting a calm yet focused mental state without causing drowsiness.
Cognitive Function: L-Theanine is commonly used in nootropic formulations and may help support attention, mental clarity, and cognitive performance.
Sleep Quality Support: While not a sedative, L-Theanine’s calming properties may help support improved sleep quality as part of relaxation-focused formulations.
Antioxidant Support: L-Theanine contributes to antioxidant activity, helping to support cellular protection against oxidative stress.
Stress Response Balance: L-Theanine is often included in formulations designed to support the body’s response to everyday stress and promote emotional balance.
Neurotransmitter Modulation: L-Theanine is studied for its interaction with key neurotransmitters such as dopamine, serotonin, and GABA, which are associated with mood and cognitive function.
Alpha Brain Wave Promotion: L-Theanine may help promote alpha wave activity, which is linked to a relaxed and focused mental state.
Oxidative Stress Regulation: Through its antioxidant properties, L-Theanine may help support the body’s natural defense against oxidative stress.
| Item | Specification | Results | Method |
| Assay | 98.0%-102.0% | 100.1% | HPLC |
| Physical & Chemical characteristic | |||
| Appearance | White or quasi-white crystalline powder | Conforms | Organoleptic |
| Solution clarity | Clear and colorless | Conforms | / |
| Loss on drying | ≤1.0% | 0.30% | GB 5009.3 |
| Residue on ignition | ≤0.2% | 0.07% | GB 5009.4 |
| pH | 4.5-6.0 | 5.5 | / |
| Chloride | ≤0.02% | Conforms | USP<221> |
| Sulfates | ≤0.02% | Conforms | USP<221> |
| Heavy metal | ≤10ppm | Conforms | GB5009.74 |
| Iron (Fe) | ≤10ppm | Conforms | USP<241> |
| Arsenic (As) | ≤2ppm | Conforms | GB5009.12 |
| Cadmium (Cd) | ≤lppm | Conforms | GB5009.15 |
| Mercury (Hg) | ≤0.1 ppm | Conforms | GB5009.17 |
| MicrobiologicalTests | |||
| Total plate count | ≤1000cfu/g | Conforms | USP<2021> |
| Yeast & Mould | ≤100cfu/g | Conforms | USP<2021> |
| Coliforms | Negative | Negative | USP<2022> |
| Salmonella | /25g Negative/25g | Negatrve | USP<2022> |
| Conclusion | Conforms to In-house standard | ||
We accept intemational Express-FedexDHUPs, air shipping and sea shipping, We can ship to all over the word, even to some remote areas, suchas remote areas of Russia, countries near the north and south poles.
Thank you for your interest in our products!
Please noticed that our products are raw materail , only supply for commercial use.
Our products are not available for individual use.
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