Latin Name: Silybum marianum (L.) Gaertn.
Specification: 10:1, 40%-80% silymarin
Appearance: Yellow Brown Fine Powder
Used Part: Whole Herb/Seed
Test Method: UV
Solubility: not soluble in water
MOQ: 1 kg
Sample: 20 g
Packing: 1 kg in aluminum foil bag; 25 kg in fibre drum
Delivery: FedEx, DHL, air shipment, sea shipment
Certifications: ISO, HACCP, KOSHER, HALAL, BRC
Features:
Non-irradiated
GMO-free, allergen-free, TSE/BSE-free
Not treated with ETO during production, storage, or transportation
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Reliable Milk Thistle Extract Manufacturer & Bulk Supplier
Greenherb operates a certified processing facility specializing in Milk Thistle Extract, a standardized flavonolignan ingredient derived from the seeds of Silybum marianum through controlled solvent extraction and chromatographic purification. Our production system delivers consistent silymarin complex standardization, verified botanical identity, and batch-level documentation. This provides supplement manufacturers and nutraceutical formulators with a dependable supply of this widely recognized liver wellness botanical ingredient.
Why Choose Greenherb Milk Thistle Extract
Silymarin Complex Standardization
Our extract is standardized for the full silymarin complex. This includes silybin, silydianin, and silychristin flavonolignans. This multi-component approach differs from single-marker silybin-only preparations. It reflects the complete active fraction naturally present in Silybum marianum seed.
HPLC-Verified Flavonolignan Content
Each production batch is verified by HPLC against a defined silymarin specification. This ensures consistent active compound loading across every order. Formulators can rely on predictable potency for finished product label claim compliance.
Seed-Exclusive Raw Material
Our extraction uses only the seed of Silybum marianum. Seeds contain the highest silymarin concentration of any plant part. Using seed exclusively avoids dilution of the active fraction by stem, leaf, or hull material.
Solvent Extraction with Residue Verification
Our extraction employs optimized food-grade solvent systems. Post-extraction purification validates residual solvent levels below international pharmacopeia limits by headspace GC analysis. This supports supplement-grade ingredient classification.
Spray-Dried Powder Consistency
Liquid extract is converted to free-flowing powder through controlled spray drying. This improves handling characteristics and dosing precision. The powder integrates directly into capsule filling and tablet granulation equipment.
Heavy Metal Compliance
Every lot undergoes ICP-MS screening for lead, arsenic, cadmium, and mercury. Results are verified against international pharmacopeia and supplement regulatory thresholds before release.
Microbiological Safety Panel
Each batch undergoes full microbiological panel testing. Total aerobic count, yeast and mold, and pathogen screening are all included. Results consistently meet supplement-grade safety standards.
Flexible Silymarin Concentration Tiers
We offer multiple silymarin standardization levels. These range from standard 70% through high-potency 80% specifications. A single supply relationship accommodates diverse finished product positioning requirements.
Certificate of Analysis

What Is Milk Thistle Extract
The Plant and Its Active Fraction
Silybum marianum is a flowering herb in the Asteraceae family. Its seeds contain a concentrated flavonolignan complex known as silymarin. This complex is not a single compound. It is a group of structurally related flavonolignans. Silybin is the most abundant component. Silydianin and silychristin are also present in meaningful quantities.
Extract vs. Milk Thistle Powder
Milk thistle powder is produced through simple mechanical grinding of dried seed material. It retains all seed components at naturally occurring concentrations. Silymarin content in crude seed powder is typically low. Milk Thistle Extract undergoes selective solvent extraction and purification. This concentrates the silymarin fraction to a defined and analytically verified specification. The extract delivers a measurable and reproducible active compound content. This is essential for supplement applications requiring documented silymarin loading per dose.
Why the Silymarin Complex Matters
Standardizing for the full silymarin complex rather than silybin alone is significant. Different flavonolignan components may contribute complementary activity within the liver wellness context. Focusing only on silybin can misrepresent the complete active profile of Silybum marianum seed. Our multi-component silymarin standardization approach reflects the actual composition of the source material more accurately.

Production Process
Seed Sourcing and Qualification
Incoming Silybum marianum seeds are authenticated by botanical identity verification and HPLC fingerprinting. Silymarin content, moisture, heavy metals, pesticide residues, and microbiological status are screened. Only qualified seed material proceeds to extraction.
Cleaning and Dehulling
Seeds undergo mechanical cleaning to remove foreign matter and debris. Dehulling separates the pericarp from the kernel fraction. This concentrates the silymarin-rich kernel material before milling.
Milling and Size Reduction
Dehulled seed is milled to a defined particle size. Uniform size reduction maximizes solvent contact surface area. This optimizes silymarin extraction efficiency in the subsequent step.
Solvent Extraction
Ground seed material undergoes extraction using an optimized solvent system. Temperature, time, and solvent-to-material ratio are carefully controlled. This selectively solubilizes the silymarin flavonolignan fraction from the seed matrix.
Filtration and Crude Concentration
Crude extract solution undergoes multi-stage filtration. Insoluble seed fiber and lipid fractions are removed. The clarified extract is then concentrated under reduced pressure at controlled temperatures.
Purification
Concentrated crude extract undergoes additional purification. This removes co-extracted pigments, waxes, and non-target compounds. It increases the relative silymarin concentration toward target specification.
HPLC Standardization
Purified extract is measured by HPLC for individual flavonolignan content. Silybin, silydianin, and silychristin are each quantified. The extract is adjusted through controlled blending to meet total silymarin specification.
Spray Drying
Standardized extract is atomized and dried at controlled temperatures. Food-grade carrier support produces a uniform, free-flowing light yellow to tan powder.
Quality Release Testing
Each lot is tested for silymarin content by HPLC, residual solvent by headspace GC, moisture, heavy metals, pesticide residues, and microbiological compliance. Batches are released only after all parameters are confirmed.
Protective Packaging
Powder is sealed in double-layer PE inner bags with desiccants and oxygen absorbers. Drums are light-proof and nitrogen-flushed. This protects flavonolignan stability during storage and transit.

Functional Properties & Benefits
Liver Comfort and Hepatic Wellness Support
Milk Thistle Extract is one of the most widely used botanical ingredients for liver wellness support. It contributes to formulations designed to support a healthy, comfortable liver function during daily routines. The silymarin complex is the basis for this well-established functional positioning.
Antioxidant Activity in Liver Tissue Context
The flavonolignan matrix contributes antioxidant activity within hepatic cell contexts. Supplement formulations target oxidative stress comfort at the cellular level. This positions Milk Thistle Extract as a functional antioxidant ingredient with specific organ wellness relevance.
Detoxification Comfort Support
Milk Thistle Extract is incorporated into daily detox and cleanse formulations. These products are designed to support the liver’s natural detoxification comfort processes. Regular use contributes to a sense of internal cleanliness and metabolic comfort.
Digestive Comfort and Bile Flow Support
Silymarin has a traditional association with supporting bile secretion comfort. Some digestive wellness formulations incorporate milk thistle for its contribution to comfortable bile flow and overall digestive system function during daily routines.
Skin Radiance and Antioxidant Beauty Support
Ingestible beauty formulations incorporate Milk Thistle Extract for its antioxidant contribution. These products target skin radiance and a clear, healthy complexion. Liver wellness and skin clarity are positioned as interconnected wellness concepts in this growing supplement category.
Post-Exercise Recovery Support
Some sports nutrition and recovery formulations include milk thistle. These products support liver comfort during periods of increased metabolic demand. Active lifestyle consumers use it alongside protein supplements and performance nutrition products.
Applications
Liver Wellness and Detox Supplements
Silymarin supplement formulations in hard capsule, softgel, and tablet formats. Standardized silymarin complex content, HPLC-verified flavonolignan profile, and comprehensive regulatory documentation support finished product positioning in the liver wellness supplement category.
Multi-Ingredient Detox and Cleanse Formulations
Milk Thistle Extract combines with complementary liver wellness botanicals. Dandelion root, artichoke leaf, and turmeric are common co-ingredients. Daily detox, liver support, and metabolic comfort are primary positioning concepts.
Antioxidant and Cellular Wellness Blends
Multi-ingredient antioxidant formulations incorporate milk thistle alongside other polyphenol-rich botanicals. Cellular protection, oxidative stress comfort, and daily wellness support are primary product positioning concepts.
Sports Nutrition and Active Lifestyle Products
Incorporated into post-workout and recovery supplement stacks. Liver comfort support and antioxidant activity during periods of increased physical demand position milk thistle as a relevant active lifestyle ingredient.
Ingestible Beauty and Skin Wellness Supplements
Beauty-from-within supplement formats include Milk Thistle Extract. Skin clarity, radiance support, and antioxidant wellness positioning connect liver health concepts to visible skin appearance outcomes in the nutricosmetics category.

Contact Greenherb for Milk Thistle Extract Supply
Greenherb supplies Milk Thistle Extract with verified silymarin profiles, backed by comprehensive third-party testing. We offer flexible order quantities from laboratory samples to full container loads. Customized silymarin standardization tiers, flavonolignan profiling options, and particle size specifications are available on request. For immediate assistance, contact our sourcing team directly.
Greenherb – Your Strategic Partner for Botanical Ingredients and Functional Foods.
GreenHerb is a trusted supplier of high‑quality plant extract powders. We offer custom specifications, strict third‑party quality control, and reliable global shipping. Whether you need samples or bulk orders, we deliver pure, consistent ingredients to customers worldwide.
Global Shipping Coverage
We offer worldwide shipping service for all plant extract powder items. Orders can be delivered to most countries and regions, meeting diverse international business demands.
Safe & Efficient Distribution
- We provide all customs documents (invoice, COA, packing list) and a tracking number for every order. Shipping cost is calculated at checkout. For bulk orders, contact us for a competitive freight quote.
- We offer flexible packaging: 1kg, 5kg, 10kg, 25kg bags, or bulk drums. Customizable bag materials (foil, kraft paper)
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CONTACT INFORMATION
Do you have questions about how we can help your company? Send us an email and we’ll get in touch shortly.
