Milk Thistle Extract Powder Wholesale | 80% Silymarin

Milk Thistle Extract Powder

Milk thistle extract including silymarin and silybin. Natural Field offers a comprehensive range of such extracts to meet diverse formulation needs: silybins (30%), silymarin (80%), water-soluble silymarin (40%), and high-purity silybin (98%). All batches undergo strict quality control and are tested via HPLC to ensure consistency, purity, and potency.

Suitable for dietary supplements, functional foods, cosmetics, and other applications, our pure milk thistle extract powder complies with international standards, supported by full batch traceability and relevant documentation (Certificate of Analysis/COA, Material Safety Data Sheet/MSDS).

Specifications of Milk Thistle Extract Powder

product name

milk thistle extract silymarin

Common Names

Holy thistle, Lady's Thistle, Mary thistle, Marian thistle

Keywords

Silymarin; silymarin powder; Milk Thistle Extract silymarin powder

Appearance

brown powder

Grade

milk thistle extract food grade

Main Functions

provide energy and healthcare support

OEM

customized logo is welcome, packing as your requirement, offering private label

Storage

keep in a cool, dry, dark location in a tightly sealed container or cylinder.

Shelf Life

24 Months

Your Trusted Milk Thistle Extract Supplier in China

Our milk thistle powder products are carefully manufactured to deliver high active yield, exceptional purity, and extended shelf life.

Certified Quality: Fully compliant with USFDA, HALAL, Kosher, and EU standards.
Superior Potency: High active yield and bioactive integrity in every batch.
Scalable Supply: Advanced manufacturing for large-scale industrial needs.
Global Delivery: Reliable international shipping with secure packaging.
Strict Testing: Multiple stages of lab analysis to guarantee safety.

Natural Field is a professional China supplier of premium milk thistle extract powder, trusted by global brands for quality and reliability. Request a quote or sample today to see how we can support your production.

Certificate of Analysis for Milk Thistle Extract Powder

ITEM	SPECIFICATION	RESULT	METHOD
Assay
Assay of Silymarin	≥80.0%	80.46%	UV
Assay of Silymarin	/	45.53%	HPLC
Sum of Silycristin and Silydianin	/	11.82%	HPLC
Sum of Isosilybin A and Isosilybin B	/	5.18%	HPLC
Physical & Chemical Characteristics
Appearance	Amorphous Powder	Conforms	Organoleptic
Color	Yellow to Yellowwish-Brown	Conforms	Organoleptic
Odor	Characteristic	Conforms	Organoleptic
Taste	Characteristic	Conforms	Organoleptic
Identification	A. Thin-Layer Identification TestChromatographic	Conforms	TLC
Identification	B. HPLC Identification Test	Conforms	HPLC
Particle Size	100%Through 40-60 mesh	Conforms	USP<786>
Loss on Drying	≤5.0%	2.41%	USP<731>
Sulphated Ash	≤0.5%	0.25%	USP<561>
Solubility
In Water	Practically Insoluble	Conforms	/
In Methanol and Acetone	Soluble	Conforms	/
Heavy metals	≤10.0ppm	Conforms	USP<231>
Lead(Pb)	≤2.0ppm	Conforms	USP<730>
Arsenic(As)	≤1.0ppm	Conforms	USP<730>
Mercury(Hg)	≤0.1ppm	Conforms	USP<730>
Cadmium(Cd)	≤1.0ppm	Conforms	USP<730>
Microbiological Tests
Total plate Count	≤1000cfu/g	Conforms	USP<2021>
Yeast & Mold	≤100cfu/g	Conforms	USP<2021>
E. Coli	Negative	Negative	USP<2022>
Salmonella	Negative	Negative	USP<2022>
Staphylococcus	Negative	Negative	USP<2022>
Conclusion	Conform to In- house standard.

COA Download

FAQs of Milk Thistle Extract Powder

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1. What is the difference between UV and HPLC testing for Silymarin?

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UV detection measures the total flavonolignans content as silymarin, which is a traditional, cost-effective method widely used for routine quality control. It reflects the overall active content but cannot distinguish individual components.

HPLC testing can separate and quantify the main active isomers, such as silybin A, silybin B, isosilybin, silychristin, and silydianin. It offers higher accuracy, specificity, and repeatability, and is usually required for high-end products, pharmaceutical preparations, and USP/EP standard compliance.

In short:

UV: Fast, economical, for total silymarin content.

HPLC: Precise, component-specific, for strict quality standards.

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2. Does your Milk Thistle Extract meet USP/EP residual solvent standards?

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Yes, fully compliant.

Our milk thistle extract is produced under strict GMP conditions. Residual solvents are controlled in accordance with USP <467> and EP 5.4 guidelines (Class 1, Class 2, Class 3 solvents). All solvent residues are far below the permitted limits, and we provide batch test reports including solvent residue analysis for verification.

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3. Is your Milk Thistle Extract Powder water-soluble?

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We offer both regular oil-soluble/lipophilic grade and water-soluble grade milk thistle extract.

The original 80% silymarin powder has poor water solubility and is suitable for hard capsules, tablets, and softgels.

Our water-soluble grade is processed via micronization, dispersion technology, or liposomal encapsulation, which disperses stably in water and is suitable for oral liquids, beverages, functional drinks, and cosmetics.

Custom solubility requirements can be supported.

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4. Do you provide free samples for lab testing?

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Yes, we provide free small samples for customers’ laboratory testing and evaluation.

Generally, 10–20g samples are available upon request. Customers only need to bear the international shipping cost or provide their courier account number. Formal COA, specification sheet, and sample application documents can be issued together with the sample.

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