Marigold extract: Zeaxanthin Powder
Qingdao Borong Biotechnology offers high-purity Lutein derived from marigold flowers (Tagetes erecta).Our vertically integrated supply chain—from our own marigold plantations to advanced extraction facilities—ensures consistent quality, superior purity, and reliable supply for global markets .
Zeaxanthin typical Specification (Full COA available upon request):
| TEST ITEMS | SPECIFICATION |
| Physical Characteristics: | |
| Appearance | Orange-red to red powder |
| Odor & Taste | Characteristic |
| Particle size | 95% through 80 mesh |
| Loss on drying(w/%) | ≤5.0% |
| Total Ash | ≤3.0% |
| Bulk Density | N/A |
| Tapped Density | N/A |
| Heavy metals: | |
| Mercury (Hg) | ≤0.02 mg/kg |
| Cadmium (Cd) | ≤0.05 mg/kg |
| Lead（Pb） | ≤0.1mg/kg |
| Arsenic（As) | ≤0.5 mg/kg |
| Microbial Ealuation: | |
| Total Plate Count | ≤1000cfu/g |
| Total Yeast & Mold | N/A |
| Escherichia Coli | ≤10cfu/g |
| Salmonella | Not Detected |
| Staphylococcus aureus | ≤100cfu/g |
| Storage and Shelf life: | |
| Storage | Store in a cool and dry place,protected from light,heat and oxygen. |
| Shelf life | 24 months in the original package under recommend storage condition.It is recommended to use the entire content after opening |
We have about 16,000 acres of marigold farms in Gansu and Yunnan provinces, China. This ensures stable raw material supply and full control over quality, including heavy metals and pesticide residues.
Our 8.5-acre factory in Gansu is dedicated to producing marigold extracts (lutein and zeaxanthin), ensuring consistency and reliable quality.
We supply powder, microcapsule powder, beadlets, and oil suspensions, suitable for tablets, softgels, and other dosage forms.
We keep inventory of lutein, zeaxanthin, lycopene, and beta-carotene, allowing us to provide fast and efficient service to local clients.
Guaranteed Consistency and Quality of Supply from Seed to Finished Product.
