
Proanthocyanidins: Grape Seed Extract/Cranberry Extract/Pine Bark Extract
Proanthocyanidins (OPC) are powerful antioxidants primarily sourced from Grape Seed, Cranberry or Pine Bark. They are widely used in dietary supplements to support cardiovascular health, skin anti-aging, and UV protection.
1)Grape Seed: Proanthocyanidins 95%UV; Polyphenols 70% UV,80%UV
2)Cranberry: Proanthocyanidins 1%~25% DMAC/BL-DMAC
Proanthocyanidins Key Specifications (Full COA available upon request):
| TEST ITEMS | SPECIFICATION |
| Appearance | Light brown fine powder |
| Odor | Characteristic |
| Taste | Characteristic |
| Part Used | Leaf |
| Excipient | None |
| Particle Size | Nlt 95% Through 80 mesh |
| Bulk Density | 0.40g/ml~0.60g/ml |
| Maker Compounds | |
| Total Tea Polyphenol | ≧98.00% |
| Catechins | ≧80.00% |
| EGCG | ≧50.00% |
| Caffeine | Report only |
| Chemical Test | |
| Loss on Drying | ≦5.00% |
| Heavy Metals | ≦10.00PPM |
| Lead | ≦0.50PPM |
| Arsenic | ≦0.50PPM |
| Cadmium | ≦0.10PPM |
| Mercury | ≦0.10PPM |
| Microbiological Tests | |
| Total Plate Count | ≦1000Cfu/g |
| Yeast & Mold | ≦100Cfu/g |
| E. Coli. | Negative |
| Salmonella | Negative |
| Staphylococcus | Negative |
| Storage | Store in a cool and dry place,protected from light,heat and oxygen. |
| Shelf life | 36 months in the original package under recommend storage condition.It is recommended to use the entire content after opening |
We keep inventory in US, allowing us to provide fast and efficient service to local clients.

Our food additive workshop meets specifications for a Class 100,000 cleanroom, complete with CIP cleaning and automated metal rejection systems
Our professional QC team and our full suite of equipment, we can test every parameter listed on the COA, including assay, heavy metals, and microbiology.

Immediate acknowledgement of all inquiries during business hours.
Guaranteed Consistency and Quality of Supply from Seed to Finished Product.
Yes, we offer complimentary samples for quality evaluation. We only ask that you cover the courier/shipping costs.
We use only Water and Ethanol as extraction solvents to ensure the highest safety and purity for our botanical extracts.
Our ingredients are typically packed in 25kg net cardboard drums with an internal double-layer polyethylene (PE) bag for maximum protection.