Standardized, analytical-grade plant extracts manufactured under GMP certified quality control systems with full batch traceability.
Silybin (CAS Number: 22888-70-6), structurally recognized as silibinin, represents the major active flavonolignan isomer contained within the standardized extract of Milk Thistle (Silybum marianum). While commercial crude silymarin complex contains a mixture of flavonolignans—including silybin, isosilybin, silychristin, and silydianin—silybin accounts for 50% to 70% of the biological potency. Chemically, silybin exists as a mixture of two diastereomers: Silybin A and Silybin B in an approximate 1:1 equimolar ratio. For pharmaceutical procurement officers and senior formula developers, acquiring isolated high-purity Silybin Powder rather than generic silymarin is essential when targeting consistent biological performance, cellular membrane stabilization, and advanced hepatoprotective pathways.
At RAAG Biotech Co., Ltd., industrial-scale Silybin production avoids harsh chlorinated solvents. The raw botanical seed matrix undergoes a state-of-the-art multi-stage isolation process:
The fundamental bottleneck of standard Silybin powder in dietary supplements and pharmaceutical preparations is its hydrophobic crystal lattice, which yields low lipophilicity in gastrointestinal fluids and limited systemic absorption. Modern pharmaceutical trends focus heavily on Silybin-Phospholipid Complexes (Silybin Phytosomes).
By complexing Silybin molecules with soy or sunflower-derived phosphatidylcholine (PC) at a 1:1 or 1:2 molar ratio, the polar hydroxyl groups of silybin form hydrogen bonds with the phosphate head of phosphatidylcholine. The outer lipophilic acyl chains of the phospholipid encapsulate the silybin molecule, creating a amphiphilic complex that readily passes across enterocyte lipid membranes.
| Ingredient Parameter | Crude Silymarin Extract 80% | High-Purity Silybin Powder 95% | Silybin Phospholipid Complex |
|---|---|---|---|
| HPLC Assay Target | Total Silymarin 45-60% | Silybin A + B ≥ 95.0% | Silybin Content 29.0% - 37.5% |
| Water Solubility | Very Low (< 30 µg/mL) | Low (< 50 µg/mL) | Self-Emulsifying Dispersion |
| Relative Bioavailability | 1x Baseline | 2.5x Baseline | 8x to 10x Enhanced Absorption |
| Primary B2B Application | Standard Tablets & Capsules | Pharma Formulations & Synthetics | Premium Liver & Anti-Aging Formulations |
| Appearance | Yellowish-Brown Powder | Light Yellow Crystalline Powder | Light Yellow-Brown Granular/Powder |
RAAG Biotech Co., Ltd. operates as a specialized extraction house rather than a third-party trading broker. Since 2014, our manufacturing complex in the High-Tech Zone of Xi'an, Shaanxi Province, China, has delivered audit-ready, standardized botanical ingredients to over 40 countries worldwide.
Every single batch undergoes rigorous HPLC, UV-Vis, GC-MS (pesticide residues), and ICP-MS (heavy metals) testing. Retained lot samples are preserved for 36 months for ongoing stability verification.
Raw plant materials are sourced directly from contracted GAP (Good Agricultural Practices) planting bases. Internal lot tracking connects every drum back to the specific harvest plot and drying batch.
Our facility maintains ISO22000, HACCP, HALAL, KOSHER, and cGMP-compliant operating environments. We regularly host third-party verification audits from SGS and Eurofins.
Equipped with commercial 1000L x 3 Supercritical CO2 extraction units alongside multi-stage membrane concentration lines, protecting heat-sensitive phytochemicals with zero toxic solvent residue.
Whether your formulation requires high-density granules for direct compression tablets, micronized powders for softgel suspension, or water-soluble complexes, our technical R&D team provides custom solutions.
Full support for international customs compliance, providing comprehensive regulatory packages including COA, MSDS, Flow Charts, Allergen Statements, Non-GMO Declarations, and BSE/TSE Certificates.
As consumer intent shifts from broad-spectrum herbal teas toward scientifically validated, high-potency monomer active ingredients, global demand for purified Silybin Powder is projected to experience a compound annual growth rate (CAGR) of over 7.2% through 2030. Sourcing directors and formulation experts must navigate four core structural trends:
Nutraceutical brand owners are rapidly abandoning crude plant powders in favor of isolated monomer extracts like Silybin 95%, Quercetin 98%, and Pure Crocetin. Pure monomers allow brands to make precise clinical dosage claims, reduce inter-batch physiological variation, and fulfill strict regional regulatory standards (such as US FDA NDI notifications and EU Novel Food frameworks).
Global regulatory bodies (including EMA and US FDA) are continuously tightening maximum residual solvent limits for Class 1 and Class 2 solvents. Future-proof procurement requires factories utilizing green extraction technologies—such as enzymatic-assisted extraction, ethanol reflux, and supercritical fluid CO2—ensuring methanol, acetone, and ethyl acetate levels sit far below international safety thresholds.
Formulators are combining Silybin with synergistic flavonoid backbones—such as Quercetin (from Sophora Japonica), Dihydroquercetin, and Phosphatidylserine. These combined stacks target cellular lipid peroxidation, mitochondrial oxidative stress, and metabolic liver clearing pathways simultaneously.
Straightforward technical answers provided directly by our Quality Assurance and Export Engineering Teams.
UV-Vis spectrophotometry measures total light absorbance at specific wavelengths, often overestimating purity by counting non-silybin polyphenols. High-Performance Liquid Chromatography (HPLC) physically separates individual chromatographic peaks, quantifying Silybin A and Silybin B distinctly. RAAG Biotech standardizes all high-grade Silybin Powder batches using validated HPLC analytical methods to guarantee genuine chemical potency.
Our standard Minimum Order Quantity for bulk commercial drums is 25 kg. However, for initial laboratory testing, clinical trials, and pilot formula validation, we provide 1 kg trial packs as well as complimentary 10g-50g evaluation samples accompanied by batch-specific COAs.
Our extracts conform strictly to USP, EP, and California Proposition 65 standards. Standard specifications guarantee: Total Heavy Metals ≤ 10 ppm, Lead (Pb) ≤ 2.0 ppm, Arsenic (As) ≤ 1.0 ppm, Cadmium (Cd) ≤ 1.0 ppm, and Mercury (Hg) ≤ 0.1 ppm. Pesticide residue screens cover over 400 multi-residue pesticide compounds by LC-MS/MS and GC-MS/MS.
Yes. Our particle-engineering cleanroom can process custom fine milling from standard 80 mesh up to 200 mesh micro-powders. We can also adjust bulk density for automatic high-speed encapsulation machines or introduce non-GMO carriers (such as maltodextrin, acacia gum, or sunflower lecithin) per your specific product specifications.
Bulk Silybin Powder is packed in double-layer food-grade polyethylene inner bags sealed inside moisture-proof aluminum foil liner bags, packed into 25 kg fiber drums. Store in a cool, dry place away from direct sunlight and heat. Under unopened original packaging, the guaranteed shelf life is 24 to 36 months.
Rolling inventory of popular standardized catalog items (including Silybin 90%, Quercetin 98%, Phosphatidylserine) normally ships within 3 to 5 business days. Custom synthesis or contract extraction lots require 10 to 15 working days. We support international air express (DHL/FedEx/UPS), air freight, and sea container shipping with full customs handling.
Connect directly with our senior scientific sales team. Receive technical specifications, safety data sheets (MSDS), pricing tiers, and sample dispatches tailored to your formulation goals.
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