China Dihydroquercetin and Quercetin Manufacturer & Factory

Empowering Global Health Formulators with Superior E-E-A-T Certified Flavonoids, Direct Supply-Chain Resilience, and Industrial-Scale Purity Verification.

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Biochemical Differentiation: Dihydroquercetin vs. Quercetin

Understanding the molecular structures, bioavailability parameters, and synergistic combinations.

Molecular Architecture & Mechanisms

Quercetin (3,3',4',5,7-pentahydroxyflavone) is one of the most thoroughly documented dietary flavonoids, renowned for its strong scavenging action against reactive oxygen species (ROS) and its ability to inhibit lipid peroxidation. Extracted primarily from high-yield botanical resources such as Sophora japonica, Quercetin acts as a natural senolytic agent, supporting cardiovascular tone, respiratory health, and normal inflammatory modulation.

Dihydroquercetin (also known as Taxifolin or 3,5,7,3',4'-pentahydroxyflavanone) is the reduced counterpart of Quercetin. Lacking the C2-C3 double bond in the C-ring, Taxifolin features two chiral centers, giving it unique stereo-isomeric properties. This minor structural distinction significantly alters its physical characteristics, making Dihydroquercetin far more water-soluble and biologically available than traditional Quercetin, while remaining remarkably stable against oxidation under typical formulation environments.

Property Quercetin Dihydroquercetin (Taxifolin)
CAS Number 117-39-5 (Anhydrous) 480-18-2
Molecular Formula C15H10O7 C15H12O7
Water Solubility Extremely Low (<0.01 g/L) Moderate to High (~1.2 g/L at 25°C)
Primary Raw Material Sophora japonica buds Larch wood (Larix gmelinii / sibirica)
Antioxidant Index (ORAC) Baseline Standard Up to 3-4x Higher in lipid phases

Technology Roadmap & Future Outlook

How we are advancing flavonoid bioavailability, stability, and therapeutic delivery systems.

Micro-Encapsulation & Liposomes

By leveraging lipid-based delivery vehicles and cyclodextrin complexation, our R&D team has successfully bypassed the poor gut absorption typically associated with raw Quercetin, increasing systemic bio-absorption profiles by over 500% in pre-clinical studies.

Enzymatic Modification

We are piloting enzymatic glycosylation pathways that attach glucose moieties to the Dihydroquercetin backbone. This yields highly soluble derivatives that remain completely clear in functional beverages without precipitating out over time.

Green Chemistry Synthesis

Our long-term development roadmap focuses on zero-emission solvent recovery cycles. By moving towards pressurized hot water extraction (PHWE), we eliminate traditional organic residues, aligning with global organic requirements.

98.5%
Minimum Purity Level
500+ Tons
Annual Extraction Capacity
< 10 ppm
Heavy Metal Threshold
100%
Traceable Chain of Custody

Company Profile

Andy Biotech: Your Trusted Partner in Plant Extract Solutions

Andy Biotech is a leading manufacturer and supplier of premium-quality, scientifically-validated plant extracts for the food, beverage, nutraceutical, cosmetic, and pharmaceutical industries. Founded on a commitment to purity, potency, and innovation, we bridge the gap between nature’s potential and your product development goals.

Our core strength lies in our vertically integrated process, which gives us complete control from seed to extract. We partner with a network of certified organic and sustainably managed farms to ensure the integrity of every raw material. Our state-of-the-art extraction facilities employ advanced technologies, including supercritical solvent and water-based methods, to preserve the full spectrum of bioactive compounds without compromising on environmental responsibility.

Andy Biotech Factory Facility

Uncompromising Quality & Versatile Applications

Exceeding international regulatory baselines through certified laboratory oversight and custom blending.

Advanced Testing Instrumentation
01

Quality and safety are non-negotiable. Every batch undergoes rigorous testing in our in-house laboratories, equipped with HPLC, GC-MS, and other advanced analytical instruments. We guarantee compliance with stringent international standards, including ISO, NSF, cGMP, and related certifications. Our commitment to transparency means you receive comprehensive Certificates of Analysis (CoA) for every product, ensuring traceability and peace of mind.

Surpassing Standards Control
02

It’s one thing to just meet the regulations when providing ingredients, but when an ingredient supplier exceeds those standards and imposes even higher ones in its products, that is a sign of a company who cares. Andy Biotech takes extra steps to ensure that our independent third-party laboratory-tested ingredients you want meet our standards as well as your own.

Scientific Formulations
03

Our extensive portfolio features a wide range of standardized extract, ratio extract, and custom blends tailored to specific formulations. Whether you need Echinacea for immune support, Turmeric with high curcuminoid content, or innovative botanical blends for skincare, our technical team works closely with you to deliver exactly what your product requires. Andy Biotech provides high quality Ginkgo Biloba Extract, Lycopene Tomato Extract, Lutein Marigold Extract, Aloe Vera Gel Freeze Dried powder, Aloe Vera Extract, and other natural ingredients to the food, health, and nutraceutical industries.

Macro-Industry Solutions for Global Enterprises

Deploying targeted flavonoid preparations across highly regulated commercial channels.

Pharmaceutical & Nutraceutical

Our ultra-pure, low-solvent Dihydroquercetin fulfills USP/EP specifications. Ideal for cardiovascular tablets, cellular rejuvenation capsules, and targeted longevity supplements where bioavailability is a key KPI.

Cosmeceuticals & Anti-Aging

With unmatched anti-glycation properties, Dihydroquercetin acts as a powerful topical active. It stabilizes delicate skin formulations, prevents collagen breakdown, and provides natural defense against UV-induced damage.

Functional Foods & Beverages

Our clean-label sweetening substitutes and natural preservatives increase product shelf-life. They prevent fat oxidation in packaged foods while adding active antioxidant benefits to energy and health drinks.

China Factory 4.0 Infrastructure

China Factory 4.0: Supply Chain Resilience & Efficiency

Andy Biotech's production facility leverages advanced automation to maximize yield efficiency and minimize batch-to-batch variation. By implementing real-time SCADA monitoring systems, we track critical parameters like pressure, temperature, and solvent-contact duration during extraction processes.

Located within close reach of abundant raw material source networks in China, our facility enjoys an uninterrupted supply of high-grade botanical inputs. This location reduces long-distance logistics and carbon footprint, giving us a clear cost and supply-chain stability advantage over Western producers.

Furthermore, our factory employs a circular manufacturing approach. Bio-waste from the extraction process is redirected for agricultural composting, creating a zero-waste loop. This practice meets the rigorous sustainability expectations of global B2B buyers.

Our Story

Andy was born in a small village close to the Hanjiang River in Shaanxi province, China. Thirty years ago, when she was still a little child, she caught a cold, but medical services were not available unless the family crossed over high mountains to find a hospital. Thus, Andy's grandfather first used Echinacea leaves soaked in water for her treatment, then he dug Echinacea root, shredded it into pulp, and squeezed the liquid for Andy to drink one spoon every two hours. Andy recovered after this treatment.

As a child, Andy watched his grandfather harness the healing power of plants in his humble garden. His ancient herbal remedies were not just treatments; they were magic. That early wonder blossomed into a profound passion for plant extracts and a deep respect for nature’s wisdom. From that time on, little Andy swore that he would help to spread herbs all over the world to benefit more people.

This personal journey is the heart of Andy Biotech. It’s why Andy Biotech is dedicated to researching and delivering the purest, most effective botanical solutions for modern wellness. Andy’s lifelong vow is to honor that tradition by innovating for a healthier future, empowering lives through the timeless power of plants.

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Honor & Qualification

Validated by global standard organizations for safe, consistent export operations.

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Global Logistics & Localization Support

Ensuring customs compliance, low transit risk, and on-ground technical backup.

Frictionless Global Integration

Navigating international health regulations can be complex. Andy Biotech provides structured assistance for FDA NDI filings, EFSA Novel Food compliance dossiers, and strict allergen-free certificates. We maintain regional warehouses in major hubs to support just-in-time delivery schedules, minimizing inventory costs for our buyers.

Every batch leaves our factory with complete dual-laboratory verification documents (CoA, residual solvent tests, pesticide screenings, and heavy metal profiling). This level of transparency guarantees smooth clearance through customs in the US, Europe, and Asia-Pacific regions.

Whether you require Kosher, Halal, or USDA Organic certifications, our compliance team ensures the documentation aligns with your final target markets, preventing costly launch delays.

Our Global Supply Assurances:

  • Full Raw Material Traceability: Complete tracking from seed collection to final extract packaging.
  • Pesticide residue testing: Confirms compliance with stringent European Pharmacopoeia limits.
  • Customized packaging options: High-barrier double-polyethylene food-grade bags packed in 25kg fiber drums.
  • On-demand technical consultations: Direct support from our formulations lab to solve solubility or color challenges in your applications.

Frequently Asked Questions

Answering technical queries for procurement managers and formulators.

What are the primary botanical sources of your Dihydroquercetin and Quercetin?
Our Dihydroquercetin (Taxifolin) is primarily extracted from the wood of Larix gmelinii (Siberian Larch), while our Quercetin is extracted from the dried flower buds of Sophora japonica. Both sources are sustainably managed and harvested under strict ecological guidelines.
How does Andy Biotech ensure batch-to-batch consistency?
We use standardized extraction processes with automated control systems that regulate temperature, solvent ratios, and pressure. Every batch is tested in our in-house lab using HPLC to verify active ingredient percentages and GC-MS to check for contaminants, ensuring consistent quality across all shipments.
Can you supply custom mesh sizes for specific formulation needs?
Yes, we provide customizable milling and micronization services. Our standard powder is 80 mesh, but we can process it to 100 mesh, 200 mesh, or custom specifications depending on your formulation requirements for tablets, capsules, or instant drink powders.
What is the shelf life and storage protocol for Dihydroquercetin powder?
When stored in its original, unopened packaging in a cool, dry place away from direct sunlight, our Dihydroquercetin powder has a verified shelf life of 24 months. We recommend keeping storage temperatures below 25°C with relative humidity under 60%.
Are your plant extracts certified for Kosher and Halal formulations?
Yes, our plant extract products, including Dihydroquercetin and Quercetin, are certified Kosher and Halal. We provide the corresponding certificates with each shipment to support your compliance needs.
Do you offer third-party testing reports?
Yes. While we perform thorough testing in our internal laboratories, we regularly send samples to independent, ISO-accredited third-party laboratories (like SGS or Eurofins) to verify purity, heavy metal limits, and pesticide residue profiles. Reports are available upon request.

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