Sample: Available 20g
Appearance: Brown yellow powder
Delivery: within 3 days after payment
Certifications: ISO, HACCP, HALAL, KOSHER
Foil bag: 1-10kg; Drum: 20,25kg
- Product Description
Premium Kelp Extract from Xi'an Linnas Biotech — Standardized Marine Bioactives for Global Formulations
Xi'an Linnas Biotech Co., Ltd. manufactures pharmaceutical-grade Kelp Extract produced from high-quality Ascophyllum nodosum and Laminaria japonica species. To provide consistent bioactive profiles, our extraction procedure makes use of sophisticated solvent extraction and spray-drying technologies. Each batch ensures constant amounts of fucoidan (≥15%), natural iodine (0.3–0.8%), and alginates and is available in concentration ratios ranging from 10:1 to 50:1.
In contrast to raw seaweed powder, our extract goes through standardization and cell-wall breaking processes that increase bioavailability five to ten times. ICP-MS is used to evaluate each manufacturing run for heavy metal compliance, specifically to make sure that levels of inorganic arsenic satisfy USP and Proposition 65 requirements. Our production dependability for nutraceutical and cosmeceutical applications globally is validated by ISO 9001, HACCP, Halal, and Kosher certifications.
Why Choose Linnas Kelp Extract?
Standardized Bioactive Concentrations
The mineral and carbohydrate content of natural seaweed varies over the harvest seasons. In order to maintain fixed iodine percentages and fucoidan concentrations per specification sheet, our production technique modifies the extraction parameters. For supplement and cosmetic businesses, this standardization ensures consistent formulation performance by removing batch-to-batch variability.
Better Management of Heavy Metals
Arsenic contamination is a common danger associated with marine components. In order to eliminate harmful inorganic arsenic while preserving advantageous organic arsenobetaine, we employ selective extraction filtration. Thorough ICP-MS testing provides proven compliance for global markets by differentiating between dangerous and safe forms of arsenic.
Improved Bioavailability Technology
Raw kelp's intact cellulose structures restrict the absorption of nutrients. Plant cell walls are broken down by our mechanical disruption and enzymatic hydrolysis processes, which release polysaccharides and trace minerals into highly accessible forms that can be quickly absorbed by the body.

Technical Specifications
|
Parameter |
Specification |
|
Concentration Ratio |
10:1, 20:1, 30:1, 50:1 |
|
Appearance |
Brown yellow fine powder |
|
Iodine Content |
0.3–0.8% (standardized) |
|
Fucoidan Content |
≥15% |
|
Moisture |
≤5% |
|
Heavy Metals |
≤10ppm |
|
Arsenic (Inorganic) |
≤1ppm |
|
Lead |
≤2ppm |
|
Particle Size |
80–100 mesh |
Core Applications Across Industries
Formulations for Nutraceuticals
The main component of thyroid support supplements is Kelp Extract, which provides the bioavailable iodine needed for hormone production. In capsule, pill, and softgel delivery modalities, the concentrated polysaccharides promote immunological modulation and metabolic control.
Cosmetics
For high-end anti-aging serums, high-fucoidan extracts provide anti-inflammatory and collagen-protective qualities. The alginate component enables remarkable moisture retention, mending weakened skin barriers in hydration-focused cosmetic lines.
Biostimulants for Agriculture
Marine auxins and cytokinins improve crop stress tolerance when used as foliar sprays or fertigation treatments. The extract increases agricultural yield consistency by enhancing nutrient uptake in alkaline soils where mineral lockout frequently occurs.

Quality Assurance & Compliance
From raw material inspection to final packing, our automated production lines incorporate real-time quality monitoring. Every stage of the manufacturing process is governed by HACCP standards, and Linnas strictly adheres to ISO 9001 quality management systems.
Every batch is subjected to multi-parameter testing, which includes quantification of bioactive compounds, microbiological evaluation, heavy metal screening, and moisture analysis. Every shipment is accompanied by Certificates of Analysis, which offer complete traceability proof for regulatory compliance.
Because our factory is certified Halal and Kosher, it can easily integrate into international supply chains that cater to a variety of dietary needs in markets in Europe, North America, and the Middle East.
Packaging & Delivery
Small Orders: Nitrogen-flushed sealed aluminum foil packets holding 1–10 kg to maintain bioactive stability.
Bulk Orders: 20 kg or 25 kg fiber drums with a double food-grade polyethylene lining to keep moisture out.
Following payment confirmation, all orders of Kelp Extract are shipped out within three business days. Before purchasing in bulk, we offer free 20g samples for formulation testing and compatibility assessment.

Frequently Asked Questions
Q: In comparison to raw kelp powder, how does extraction enhance iodine absorption?
A: Compared to raw seaweed powder, our extraction method increases bioavailability by five to ten times by concentrating iodine and eliminating cellulose barriers.
Q: Is your extract stable in formulations for acidic beverages?
A: To avoid alginate precipitation in acidic settings, we suggest depolymerized low-molecular-weight versions for pH values below 4.
Q: How can the iodine content be guarantyd to be constant over batches?
A: To ensure fixed iodine percentages that match specification sheets, we modify concentration ratios during manufacture notwithstanding natural raw material variation.
Q: What kind of kelp has the most fucoidan?
A: Undaria pinnatifida and Ascophyllum nodosum have better fucoidan profiles for immune-support applications, whilst Laminaria japonica is excellent for iodine.
Partner with Linnas for Reliable Marine Bioactives
Ready to use the Kelp Extract to integrate pharmaceutical-grade kelp ingredients into your formulations? Contact our technical team at cathy@linnas.com.cn to discuss custom specifications, request analytical documentation.









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