Explore our premium grade botanical extracts manufactured under GMP control, delivering unparalleled potency, standardized active ingredients, and absolute batch-to-batch consistency.
Black tea extract, derived from the leaves of Camellia sinensis via controlled enzymatic oxidation, is a complex matrix rich in bioactive polyphenols. Unlike green tea, which is dominated by monomeric catechins, the oxidation phase in black tea processing transforms these catechins into dimeric and polymeric compounds known as theaflavins and thearubigins. These molecules are responsible for the rich amber color, astringency, and unique therapeutic profiles of black tea.
Our extraction methodologies specifically target and stabilize these active structures, standardizing them to precise percentages of theaflavins (such as Theaflavin-3-gallate, Theaflavin-3'-gallate, and Theaflavin-3,3'-digallate) and polyphenols. These compounds have been shown in clinical evaluations to support cardiovascular health through the inhibition of LDL oxidation, activate AMPK pathways for metabolic balance, and act as powerful scavengers of reactive oxygen species (ROS).
A comparative look at the technical parameters and target specifications of premium black tea extracts.
Standardized to 20% - 40% Theaflavins via HPLC. Ideal for heart health formulations, vascular elasticity support, and high-performance metabolic supplements.
100% cold-water soluble, optimized for RTD beverages, instant iced teas, and clear liquid supplement bases with zero sediment or turbidity.
Standardized to 40% - 60% Polyphenols. Formulated specifically as an active ingredient in premium anti-aging skincare and cosmetic applications.
As a leading Chinese manufacturer, our supply chain integration starts directly at the agricultural level in high-altitude tea plantations in Yunnan, Fujian, and Hunan provinces. The unique climatic and geographic parameters of these regions generate tea crops with dense polyphenolic content, establishing a superior starting material for our extraction facilities.
Our extraction facilities deploy advanced clean-loop technologies, combining multi-stage countercurrent extraction, ultrafiltration to remove heavy molecular weight inert compounds, and chromatography columns to enrich theaflavins. By automating temperature, pressure, and flow controls, we minimize the thermal degradation of delicate polyphenols, achieving a higher yield of undamaged target monomers. This technological control lowers processing costs and ensures a reliable bulk supply that isolates our global clients from supply chain disruptions.
Providing verification, traceability, and certification across every stage of the manufacturing workflow.
Every single batch undergoes rigorous testing for pesticide residues (complying with USP <561> and EU regulations), heavy metals limits (Pb <0.5ppm, As <0.2ppm, Hg <0.1ppm, Cd <0.1ppm), and PAHs (polycyclic aromatic hydrocarbons).
Our manufacturing sites operate in strict alignment with cGMP protocols. We hold valid Kosher, Halal, USDA Organic, EU Organic, ISO 22000, and HACCP certifications, allowing seamless imports into highly regulated territories.
Our supply chain delivers complete traceability from the harvest field to the finalized dry extract. We track pesticide spray applications, soil compositions, and harvest dates for every production batch.
The global dietary supplement market is experiencing a massive pivot toward brain health, cognitive enhancement, and proactive cellular longevity. In recent years, TRB has focused heavily on the research and development of specialized Nootropic solutions. Our research shows that Black Tea Extract, rich in polyphenols and naturally occurring standard amounts of L-theanine and caffeine, serves as an exceptional structural foundation for these formulations.
When combined with key adaptogens, the active molecules in black tea extract support sustained cognitive focus, stress mitigation, and cellular energy production without the common crash linked to synthetic stimulants. Furthermore, emerging clinical trials underscore the anti-aging potentials of theaflavins, indicating their ability to downregulate cellular senescence markers and protect vascular lining. Formulators are increasingly using black tea extract alongside nootropics and longevity ingredients to build multifactorial, synergistic health products.
Optimized botanical solutions tailored to fit diverse applications and manufacturing processes.
Perfect for RTD teas, powdered sports drinks, and kombucha bases. Engineered for rapid dissolution, high clarity, and zero sedimentation under thermal pasteurization.
Easily formulated into capsules, tablets, and functional gummies. Our powders feature superior compressibility and flowability profiles for high-speed tableting operations.
Utilized as a potent active in topical formulations. Helps protect against UV radiation and environmental particulate pollution, reducing visible signs of aging.
China's leading developer and manufacturer of clean label, standardized botanical extracts.
Nanjing Tong Rui Bio-Tech Co., Ltd. (TRB), is a leading China manufacturer and exporter of herbal extracts and its derivatives for more than 20 years. TRB is a technology-based company that combines research and development, production, and international market sales. TRB products include Herbal extracts, Sweeteners, Nootropics, Vegetable & Fruit Juice powder, Essential oil, and Bee Products.
Due to TRB's rapid development and dedicated service in the plant extract industry over the years, we have been awarded the 2026 "Global Biotechnology and Life Sciences Award" - "Best Global Herbal Extract Provider 2026".
TRB currently operates three factories: one dedicated to herbal extracts, another for bee products, and a third for animal extract products. Our production sites hold a full range of industry certifications, including GMP, ISO, HACCP, ORGANIC, FDA, HALAL, and KOSHER Certificates. Over the years, TRB products have been exported to more than 60 countries and regions, gaining a strong global reputation for consistency and reliability. We remain committed to the research and development of pure natural plant extracts, dedicated to the health of all humanity.
Direct technical feedback from our engineering and regulatory affairs department.
We prevent polyphenol degradation by utilizing low-temperature vacuum drying and specialized spray drying parameters. We adjust pH ranges during liquid concentration phases, stabilizing the weak acidic properties of active theaflavins to keep them intact throughout their shelf life.
Yes, our instant beverage-grade black tea extract powder is designed for cold water. During processing, we run the extract through a membrane filtration step that removes insoluble proteins, lipids, and large-particle starches, ensuring a crystal-clear appearance at 4°C with no haze.
We maintain complete oversight of our sourcing and raw materials. We run our raw tea leaves through pre-extraction testing, evaluating them against 500+ chemical compounds. Each batch must pass third-party testing (by firms like SGS or Eurofins) before being cleared for export to the EU.
For customized formulations (such as specific mesh particle sizes, high-concentration active levels, or non-caffeinated options), our typical production cycle takes 2 to 3 weeks. This includes processing, laboratory testing, and completing our final quality release process.
Explore our broader line of natural health ingredients manufactured to meet the same high quality standards.
Pioneer Bio-Park, No 127 North Road Xishan Bridge, Yu Hua Tai District, Nanjing, China 210012
Fax: 86-25-52867040
Contact our technical support and sales team for full specifications, COAs, sample requests, and bulk pricing options.
