Chitosan Oligosaccharide (COS) is a food-grade water-soluble low-molecular-weight oligosaccharide produced by enzymatic hydrolysis of chitosan from crustacean shells.We supply bulk Chitosan Oligosaccharide sourced from leading China manufacturers, available in powder form for food and beverage manufacturers worldwide. Our Chitosan Oligosaccharide is widely used in immune-support supplements, gut-health products, weight-management formulas, antimicrobial food preservation and agricultural plant-growth enhancers.
Chitosan Oligosaccharide (COS) is manufactured by enzymatic or acidic hydrolysis of chitosan derived from deacetylated crustacean chitin.
Unlike high-molecular-weight chitosan, COS is fully water-soluble, heat-stable and highly bioavailable. It has prebiotic, immune-modulating, antimicrobial, antioxidant and cholesterol-lowering activity, and is used in functional foods, supplements and agricultural applications.
Grades / Types Available: Food grade, Feed grade, Cosmetic grade, Agricultural grade
| Item | Specification |
|---|---|
| Appearance | Off-white to light yellow fine powder |
| Assay (COS, dry basis) | ≥ 90% |
| Degree of Polymerisation | 2-10 |
| Water Solubility | ≥ 99% |
| Moisture | ≤ 10% |
| Ash | ≤ 1.5% |
| Heavy Metals (as Pb) | ≤ 10 mg/kg |
| Total Plate Count | ≤ 1,000 cfu/g |
| Purity (Food Grade) | ≥ 90% |
| Viscosity (Food Grade) | < 100 mPa.s |
| Moisture/Loss on Drying | ≤ 10% |
| pH | 6.0 - 7.5 |
| Particle Size/Mesh | 80 mesh |
| Lead | ≤ 1 ppm |
| Arsenic | ≤ 0.5 ppm |
| Yeast & Mold | ≤ 100 cfu/g |
Our MOQ for bulk food/feed ingredient is generally 500 kg. We also support mixed containers — combine Chitosan Oligosaccharide with other food ingredients in one shipment to save on freight.
We provide free samples (100–500g) for quality testing before you place a bulk order. The buyer covers shipping costs only. Samples are typically dispatched within 2–3 business days.
Standard lead time is 7–15 days after order confirmation and payment. For stock items, delivery can be faster. We will confirm the exact timeline before you place the order.
You will receive the original COA (Certificate of Analysis), COO (Certificate of Origin), MSDS, TDS, and relevant certifications directly from the manufacturer. We guarantee full document authenticity and traceability.
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Whether you're sourcing bulk ingredients or mix container, contact our team for pricing, free samples, and technical support.