L-theanine Powder

99% Pure L-Theanine Powder Supplier for Dietary Supplements & Functional Foods：

Guanjie Biotech is a professional L-Theanine powder manufacturer supplying high-purity raw materials for global nutraceutical, functional food, and beverage companies. Our L-Theanine powder is available in bulk quantities with customized packaging and OEM/ODM support. L-theanine is primarily produced through microbial fermentation or chemical synthesis, with market extracts commonly reaching concentrations of up to 40%. Our premium product features a purity specification of ≥99%, verified by the HPLC detection method to ensure accuracy and consistency. It appears as a white or off-white powder with excellent stability and solubility, making it ideal for capsules, tablets, beverages, and functional foods. CAS No.: 3081-61-6. Guanjie Biotech supports bulk supply, strict quality control, and customized OEM/ODM services for global partners. Welcome to enquire with us at info@gybiotech.com.

Why Choose Guanjie Biotech as Your L-Theanine Supplier?

1. Direct Manufacturer Supply

As a factory-direct supplier, Guanjie Biotech provides stable L-Theanine production capacity and competitive pricing.

2. High Purity Raw Material

Our L-Theanine powder reaches ≥99% purity and is tested by HPLC to ensure consistency.

3. Quality Control System

Each batch is tested for purity, heavy metals, microbial limits, and other quality parameters.

4. Customized Solutions

We support customized specifications, packaging, and formulation requirements. With competitive pricing and consistent quality, we are committed to providing the best products and services. For our L-theanine powder, please contact us at :info@gybiotech.com

COA

Is L-Theanine Powder Water Soluble?

L-Theanine powder has good water solubility, making it suitable for functional beverages, instant powders, and liquid supplement formulations.

Applications of L-Theanine Powder

What Is the Source of Pure L-Theanine Powder?

Pure L-theanine Powder, chemically known as N-ethyl-γ-L-glutamine, is a characteristic non-protein amino acid naturally found in tea plants. It is one of the most important functional components in tea and is highly valued in the health supplement, food, and beverage industries. The primary sources of pure L-theanine can be summarized as follows.

1. Natural Source: Tea Plants as the Main Origin

The most important natural source of pure L-theanine powder is the tea plant, Camellia sinensis. L-theanine is considered a signature amino acid of tea and is rarely found in other plants. In addition to tea trees, only a few other species, such as Camellia japonica, Camellia sasanqua, and the mushroom Xerocomus badius, have been reported to contain this compound.

Among all natural sources, tea leaves contain the highest concentration. Studies show that L-theanine accounts for approximately 70% of the total free amino acids in new tea shoots, while its content in fresh tea leaves is generally 1% to 2% of the dry weight. This makes tea leaves the most commercially valuable raw material for extracting pure L-theanine powder.

2. Distribution Within Different Parts of the Tea Plant

L-theanine Powder is not evenly distributed throughout the tea plant. Its concentration varies significantly depending on the plant part. The highest levels are found in young leaves and tender buds, which are also the main parts used for tea production.

The concentration generally follows this order:
young leaves > root bark and absorbing roots > old leaves > stem bark and xylem tissues

Before the tea tree begins to sprout, nitrogen absorbed by the plant is mainly stored in the roots and leaves in the form of theanine, glutamine, and arginine. Once germination starts, these nitrogen-containing compounds are transported to the growth points and developing shoots. Among them, L-theanine Powder is present at the highest concentration, making new buds and young leaves especially rich sources.

3. Seasonal Variation of L-Theanine Content

The source concentration of L-theanine powder is also influenced by seasonal changes. The content is usually highest in spring, when tea plants produce fresh shoots and buds. As the growing season progresses, the level gradually declines during summer and may rise slightly again in autumn.

During winter, L-theanine mainly accumulates in the roots of the tea plant as a nitrogen reserve. When spring arrives, and the tea tree begins to germinate, the theanine content in the roots decreases because it is transferred to the newly developing shoots.

This seasonal movement is one of the key reasons why spring tea leaves are considered the best natural source for high-purity L-theanine extraction.

These properties make it an important raw material in the nutraceutical market. Guanjie Biotech, as a Pure L-theanine Powder supplier, supports bulk supply and OEM/ODM services for global customers seeking high-quality amino acid ingredients.

 

User Evaluation

"We have been sourcing L-Theanine from Guanjie Biotech for over a year. The product quality is consistent from batch to batch, and the test reports are always provided on time. Their professional support has helped us maintain stable production."

Hive Corps

"Guanjie Biotech's L-Theanine meets our strict quality requirements. The powder has good flowability and performs well in our formulations. Fast delivery and responsive communication make them a reliable supplier."

Mark Su

"We are very satisfied with Guanjie Biotech's L-Theanine. The purity and quality are excellent, and the company provides complete technical documentation. Their sales team is knowledgeable and always ready to assist with our requests."

Herry

FAQs:

A: The MOQ starts from 1kg for sample orders and can be customized for bulk purchasing.

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