Wholesale Price Bulk Food Grade Organic L-Theanine

L-theanine powder (γ-glutamylethylamide) is a characteristic amino acid found in tea. It is synthesized in the roots of the tea plant from glutamic acid and ethylamine with the help of the enzyme theanine synthase. It is an important substance in forming the flavor of tea, mainly giving a fresh and sweet taste, and is the main component that contributes to tea's mouthwatering and mellow sweetness. Twenty-six amino acids have been identified in tea (six of which are non-protein amino acids), generally accounting for 1% to 5% of the dry weight of tea, with theanine making up more than 50% of the total free amino acids in tea.

Tea amino acids refer to all 26 amino acids found in tea. Among them, 20 are related to protein and are called protein amino acids, while six are unrelated to protein synthesis and are called non-protein amino acids. The six non-protein amino acids are more important in tea, with theanine being the most important among them. So, theanine is one of the amino acids and is considered the characteristic amino acid of tea. As the most abundant characteristic non-protein amino acid in tea, theanine is safe and has no toxic side effects. It has multiple biological activities, including antioxidant effects, immune regulation, anti-aging, and counteracting excitatory toxicity caused by excess glutamate.

At the same time, L-theanine, as an alkylamine, can activate γ-T immune cells to promote cell proliferation and cytokine secretion, enhance the body's ability to fight tumor cells, reduce infection from external microbes, and lower the likelihood of catching a cold or flu.

Product Specification

What Are the Main Product Applications for Bulk L-Theanine Powder?

L-theanine is one of the most versatile ingredients in the modern nutraceutical and functional beverage landscape. In sports nutrition and energy drinks, it is frequently paired with caffeine (typically at a 2:1 or 1:1 ratio) to smooth out the central nervous system spikes associated with stimulants, eliminating "caffeine jitters" and supporting clean, sustained mental focus.

In nighttime relaxation formulas and stress-support gummies, it is blended with GABA, magnesium, or botanical extracts like ashwagandha to encourage tranquil alpha brain-wave activity. Because of its neutral to slightly sweet taste and clear water solubility, formulators can easily integrate it into functional RTD (ready-to-drink) teas, mood-balancing sodas, powdered stick packs, and hard gelatin or vegetarian capsules without altering the final product's flavor or clarity.

Why Is HPLC Isomer Verification Essential for Quality Sourcing?

The physiological benefits of theanine are exclusive to the naturally occurring L-isomer form. Inferior or non-standardized synthesis methods can introduce the inactive D-theanine enantiomer, which reduces the active potency and competitive binding efficiency of the finished product.

Partnering with an established L-theanine powder manufacturer ensures every shipment undergoes High-Performance Liquid Chromatography (HPLC) testing using chiral stationary phases. This chemical verification confirms $\ge 99\%$ chemical purity and guarantees the complete absence of D-isomer impurities, allowing brand owners to maintain precise label claims and consistent product efficacy.

1. The Growing Demand for Clean-Label Nootropics and Focus Blends

As modern consumers seek healthier ways to manage stress and boost productivity, the global market for cognitive health ingredients continues to expand rapidly. Formulators leveraging L-theanine powder for supplement brands can tap into several booming categories, including executive wellness, esports nutrition, and student study aids.

By incorporating ultra-pure amino acids into clean-label formulations, brands communicate high efficacy and quality. Our ingredient holds international certifications (Kosher, Halal, ISO) and is naturally free from common allergens, gluten, and GMOs, making it suitable for vegan and plant-based supplement lines.

2. Formulating Advantages in Liquid and Ready-To-Drink (RTD) Systems

Unlike many botanical extracts that suffer from heavy sediment, bitter astringency, or dark coloring, L-theanine powder dissolves rapidly into clear aqueous solutions with minimal taste impact.

Its heat stability allows it to withstand standard pasteurization and hot-fill beverage processing techniques without thermal degradation. Beverage formulators can add pure L-theanine directly to sparkling waters, cold-brew coffees, functional juices, or liquid drops while maintaining clear visual presentation and a stable 24-month shelf life.

3. Comprehensive Quality Assurance and Regulatory Safety

Navigating global regulatory compliance requires complete transparency at the raw material stage. Every lot produced at our facility is subjected to rigorous analytical screening before release.

We verify safety parameters according to USP and EP standards, ensuring heavy metals (Lead, Arsenic, Cadmium, Mercury) remain strictly below 0.5 ppm, pesticide residues are undetected, and total microbial counts meet stringent international safety standards. Full batch documentation is supplied directly with each order to streamline your internal quality checks.

4. End-to-End Contract Manufacturing & Private Label Capabilities

Launching a new private label product or expanding an established line of stress-relief supplements requires flexibility, speed, and packaging options. Working with a dedicated OEM L-theanine powder factory provides access to turnkey production without capital investment in processing hardware.

Whether your brand requires bulk raw ingredient drums, custom-printed stand-up pouches, single-serve stick packs, or bottle-packaged HPMC capsules, our contract services handle manufacturing, quality validation, and packaging under one roof.

Xi'an Haoze Biotechnology Co., Ltd provides flexible OEM and ODM services designed to help you bring finished consumer-ready SKUs to market smoothly:

Encapsulation & Tableting: HPMC (vegetarian), pullulan, and gelatin capsules filled in standard 100mg, 200mg, or custom dosage formats.

Sachet & Stick-Pack Filling: Nitrogen-flushed single-serve foil packs (1g–5g) for drink mixes and pre-workout formulas.

Retail Bottling & Pouching: HDPE/PET bottle packaging (30, 60, or 90 counts) and aluminum foil stand-up pouches with custom label printing.

Custom Formulations: Development of synergistic premixes combining L-theanine with coffeeberry, caffeine, mushroom extracts, or electrolytes.

Decade of Manufacturing Excellence: Over 10 years of professional expertise in active ingredient extraction, amino acid synthesis, and global B2B supply.

High-Purity Guarantee: HPLC-tested 99% pure L-isomer with strict quality control from raw material input to final pack-out.

Complete Technical Dossier: Certificate of Analysis (COA), Flow Chart, MSDS, Allergen Statements, and Stability Data available for immediate regulatory submission.

Reliable Batch Stability: Large production capacity ensuring uninterrupted year-round supply, competitive tier pricing, and fast sample fulfillment.

We offer fast, dependable international shipping channels tailored to your production schedule and cargo volume:

Express Delivery (DHL / FedEx / UPS): Fast door-to-door transit within 3–7 business days, ideal for trial orders, research batches, and urgent samples.

Air Freight: Reliable airport-to-airport delivery within 5–8 days for medium-volume production runs (100kg–500kg).

Sea Freight: Economical FCL/LCL shipping solutions for large commercial orders (>500kg) with complete export customs clearance documentation.

Ready to order L-theanine powder or request pricing, technical specifications, and free sample testing for your upcoming formulation? Get in touch with our B2B sales team today.

Email: info@haoze-bio.com