What is Silymarin Extract?
Silymarin Extract is a standardized extract from the seeds of Silybum marianum (milk thistle) and is mainly made up of a complex of flavonolignans, namely: silybin, isosilybin, silychristin, and silydianin. It is manufactured by carefully controlling the extraction and purification steps, obtaining the isolation and concentration of these naturally occurring compounds in a uniform and specification-defined raw material that can be used in industry. It is formulated to be more uniform in composition, enabling manufacturers to control more precisely the quality of formulations and raw materials, as well as to ensure the consistency of products in large-scale production systems. It is broadly available in a variety of defined concentration grades, allowing procurement teams and formulators to choose input materials based on the properties of the formulation to be created, cost structure, and positioning of the application in the nutraceutical, functional food, and cosmetic manufacturing processes. It is highly appreciated in industrial applications for its consistency in processing, ability to blend, and ability to tableting, as well as being used in complex formulations that contain botanical extracts. It is a standardized botanical ingredient from the plant that is formulated for scalable manufacturing, formulation consistency, and flexibility in global botanical ingredient markets.

COA
| Item | Specification | Result | Test Method |
| Assay (Silymarin) | ≥80.0% | 80.65% | UV |
| Appearance | Fine Powder | Conforms | Visual |
| Color | Yellow Brown to Light Yellow | Conforms | Visual |
| Odor & Taste | Characteristic | Conforms | Organoleptic |
| Identification | Positive | Conforms | TLC |
| Particle Size | 95% Pass 80 Mesh | Conforms | USP <786> |
| Loss on Drying | ≤5.0% | 2.84% | USP <731> |
| Ash Content | ≤5.0% | 1.73% | USP <281> |
| Bulk Density | 0.35–0.65 g/ml | 0.48 g/ml | USP |
| Tap Density | 0.45–0.85 g/ml | 0.61 g/ml | USP |
| Residue on Ignition | ≤1.0% | 0.35% | USP <281> |
| Heavy Metals | ≤10 ppm | <10 ppm | USP <233> |
| Lead (Pb) | ≤2.0 ppm | <0.50 ppm | ICP-MS |
| Arsenic (As) | ≤1.0 ppm | <0.20 ppm | ICP-MS |
| Cadmium (Cd) | ≤1.0 ppm | <0.10 ppm | ICP-MS |
| Mercury (Hg) | ≤0.1 ppm | <0.01 ppm | ICP-MS |
| Total Plate Count | ≤10,000 CFU/g | 560 CFU/g | USP <2021> |
| Yeast & Mold | ≤1,000 CFU/g | 80 CFU/g | USP <2021> |
| Coliforms | ≤10 CFU/g | <10 CFU/g | USP <2022> |
| E. coli | Negative/10g | Negative | USP <2022> |
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Industry Background
Silymarin Powder comes with a rich history in the growing world of botanical ingredients for the worldwide expansion of the nutraceutical, functional food, and personal care manufacturing supply chain. More and more standardized extracts from plants like silymarin are part of the category of natural origin and minimally processed raw materials, which are in increasing demand on the international market. Milk thistle (Silybum marianum) has been known historically as a widely used medicinal plant in Europe, Asia, and North America, and, over the past few decades, progress in methods of extraction and purification has allowed for the shift from traditional herbal formulations to highly standardized industrial extracts. This change has been crucial for the progress of scalable production models to satisfy today's demands for consistency, traceability, and specification control. It is placed in a competitive field of botanical extracts, where the regulatory harmonisation, quality assurance requirements, and demand for well-documented raw materials are rising. The supply chains are also more global, with agriculture supply chains ranging from Europe to Asia and South America, and with standardized testing procedures and export compliance systems.
Development History
In the past, the seeds of the plant have been processed in a very primitive fashion, using drying and grinding processes without any control over the extraction methods, so the seeds have a very variable composition and quality, depending on the growing conditions and how they are treated. The production was mostly empirical at this stage, and very little scientific knowledge was known about the flavonolignan compounds found within the production, and there were no consistent specification standards. The modernization period started in the mid-20th century when the study of phytochemicals and solvent extraction technology allowed the identification of the main constituents like silybin and other flavonolignans, and the extraction and concentration of more active fractions. It was the beginning of a transition from the use of raw materials for the processing of botanicals to a more controlled process of making extracts. With the advent of the late 20th century, purification methods and other analytical methods, including HPLC, were refined, and manufacturers could determine more accurate quality specifications such as concentration ranges and levels of impurities, which further improved the consistency of batches and their industrial use. The 21st century saw the industry further develop to become scalable, with optimized solvent recovery and stringent quality documentation in order to fulfill international supply chain needs. Silymarin Milk Thistle Extract is now a proven and standardized botanical raw material in the nutraceutical, functional food, and cosmetic industries as a specification-controlled raw material to ensure uniform formulation performance across the globe.

Application
1. Dietary supplement manufacturing
Silybum Marianum Extract as a botanical ingredient, in capsules, tablets, and powders, for input into high-volume production of standardized plant extract products, consistent product positioning.
2. Functional beverage and food industry
Used as formulation ingredients in botanical-enhanced beverages, nutritional powders, and functional food systems, including the incorporation of plant-based ingredients into the formulation of the system for product diversification.
3. Cosmetic and personal care formulations
Part of ingredient complexes from plants as ingredients in skin care and topical product systems (creams, serums, lotions) for formulation placement and natural ingredient claims.
4. Nutraceutical contract manufacturing (OEM/ODM)
A common raw material used in a wide variety of projects by contract manufacturers and as a component for private label product development and bulk production.
5. Herbal extract blending industry
Used as part of multi-botanical formulations, constituted from different plant extracts for the elaboration of diversified effective matrices for the design of industrial products.
6. Ingredient distribution and wholesale trade
It is actively traded in global raw material trading circuits, a specification-controlled botanical extract, aiding global sourcing, re-packaging, and regional distribution supply chains.
Production Process

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