L-Theanine Green Tea Extract is a high quality botanical substance obtained from the leaves of Camellia sinensis . It is standardised to contain 20-60% Theanine, which is known to improve cognitive functions and relaxation. Hefei Fushan Yuansheng Biotechnology Co., Ltd. provides this high-activity natural amino acid extract using water-based extraction procedures, to provide clean-label formulations free from harsh chemical residues. Our extract is available in customisable multi-gradient concentrations, with consistent batch quality, verified by HPLC testing and conformity to USP and FDA GRAS requirements. This ingredient fits the demanding standards of functional food, nutritional supplement and beverage makers across the globe, including procedures for the elimination of pesticide residues and possibilities for low-caffeine customisation.
L-Theanine, gamma-ethylamino-L-glutamic acid, is a non-proteinaceous amino acid that may penetrate the blood-brain barrier. It meets the increasing need of consumers for non-sedative relaxants and clean-label cognitive enhancers. Our extract is more enantiomerically pure than the synthetics, therefore assuring that the formulation consists mostly of the physiologically active L-isomer.
This special amino acid helps to create a sense of calm alertness by promoting alpha brain wave activity. It gets rid of the shakes and the energy crashes that come with caffeine based stimulants. This eliminates a major trouble issue for formulators of energy drinks and attention pills.
Our extract is naturally sourced and benefits from a synergistic action of tea polyphenols and catechins. This increases metabolic health and boosts antioxidant activity. Your clients are getting a multi-functional substance that does more than just relax.
| Parameter | Specification |
|---|---|
| Product Name | L-Theanine Green Tea Extract |
| Latin Name | Camellia sinensis O. Ktze. |
| Active Ingredient | Theanine |
| Specification | 20-60% (customizable) |
| Appearance | Light yellow to yellowish brown powder |
| Used Part | Leaf |
| Extraction Solvent | Water |
| Odor | Green tea grassy aroma |
| Particle Size | 100% pass through 80 mesh |
| Test Method | HPLC |
| Shelf Life | 3 years |
| Drying Method | Store in cool, dry place away from light and high temperature |
| Heavy Metals | Arsenic complied |
| Total Aerobic Count | <10 CFU/g |
Our extract starts with excellent green tea raw materials chosen for their high natural Theanine content. The water-based extraction procedure removes synthetic solvent residues and maintains biological integrity. This means a clean label profile satisfying worldwide regulatory needs.
Standard procedures for pesticide residue removal and plasticiser removal are given. Low caffeine customisation is offered for formulations for sensitive groups or evening usage. The multi-gradient content choices enable you to optimise dose and cost-effectiveness.
Rigorous HPLC testing and conformity to GMP, ISO22000, HACCP and HALAL certifications ensures batch to batch uniformity. Our technical assistance team offers formulation techniques, stability testing and regulatory paperwork help.

L-Theanine Green Tea Extract is widely employed in functional solid drinks, nutritional supplement capsules, compressed candies and antioxidant culinary additives. Its excellent water solubility and pH stability make it suitable for liquid formulations such as ready-to-drink relaxation beverages and balanced stimulation energy drinks.
It is used in cosmetics and everyday chemicals as an anti-aging active ingredient because to its antioxidant qualities. It’s also used in aquaculture and cattle feed, where reducing stress leads to better animal welfare and production.
The most therapeutically useful is EGCG from the catechin subclass of plant polyphenols. Total polyphenol content might provide you a broad idea of antioxidant power, but EGCG is the main active element for metabolic assistance and calorie burning. EGCG concentration in product formulations must be accurately quantified to achieve effectiveness.
Our extract gives transparency on Theanine and catechin characteristics. This dual-active method maximises functional advantages, while clarifying labelling and claim substantiation.
With 13 years of experience in functional nutrition and plant extracts, our firm makes use of the innovative and research infrastructure of Shenzhen Fushan Biotechnology Co., Ltd. Our R&D team consists of 4 PhDs and has applied for 54 local and foreign innovation patents, of which more than 30 have been authorised to support our technological leadership.
Our services integrate from raw material supply, scientific evidence support, formulation strategy, patent licensing solutions to regulatory compliance aid. With more robust science, our objective is to enable global companies to produce novel nutrition solutions.

Q:Does this extract contain caffeine?
A:Natural green tea extract conventionally contains 2-10% caffeine. We provide different solutions based on your formulation needs, including low-caffeine and decaffeinated options to suit various consumer preferences and usage occasions.
Q:Is the product guaranteed?
A:We guarantee that all products supplied are identical to confirmed samples. Each batch undergoes strict testing before shipment, complying with Chinese, European, or US Pharmacopoeia standards. Quality certifications and certificates of analysis are provided with every order.
Q:What purity levels are available?
A;Our product is available in concentrations ranging from 20% to 60% Theanine. Custom specifications can be developed to meet specific formulation requirements, ensuring optimal dosage and cost efficiency for your product line.

Ready to enhance your product formulations with premium L-Theanine Green Tea Extract? Reach out to our technical team at info@extrabroc.com for samples, specifications, and tailored raw material solutions.