What Is Birch Leaf Extract Flavone?
Birch Leaf Extract Flavone is a standardized botanical powder produced from the leaves of selected Betula species. Flavonoids are used as analytical marker compounds to control the consistency of the extract.
Unlike a conventional ratio extract described only as 10:1 or 20:1, a flavonoid-standardized extract is tested to confirm that the finished material meets a defined total flavonoid content.
Manufacturing Process
The standard manufacturing process includes:
- Birch leaf raw-material selection
- Cleaning and botanical identification
- Water–ethanol extraction
- Filtration
- Vacuum concentration
- Standardization
- Spray drying
- Sieving and blending
- Quality testing
- Sealed bulk packaging
Custom Flavonoid Content
Alternative flavonoid levels may be available according to order volume and technical feasibility.
Available options may include:
- 1% total flavonoids
- 2.5% total flavonoids
- 5% total flavonoids
- Customer-defined specification
Please provide your required assay, test method, application and estimated annual volume for evaluation.
Batch Quality Control
Each batch is evaluated against an approved product specification. Testing may include:
- Botanical identity
- Total flavonoid assay
- Appearance and organoleptic properties
- Moisture and ash
- Particle size
- Heavy metals
- Pesticide residues
- Residual solvents
- Total plate count
- Yeast and mold
- Specified pathogenic microorganisms
The total flavonoid content is measured using the method stated in the approved specification and Certificate of Analysis.
A sample COA may be supplied during product evaluation. The final shipment is accompanied by its corresponding batch COA.
Birch Leaf Extract vs. Birch Bark Extract
| Ingredient | Plant part | Common marker | Typical product form |
| Birch Leaf Extract Flavone | Leaf | Total flavonoids or flavones | Brownish-yellow powder |
| Birch Bark Extract | Bark | Betulin or betulinic acid | Light-colored or white powder |
| Birch Sap Powder | Tree sap | Minerals, sugars and other natural solids | Light-colored powder |
Applications
Dietary Supplements
Suitable for botanical capsules, tablets, powder blends and multi-ingredient supplement formulations.
Functional Formulations
Can be evaluated for functional powder blends and other botanical products where a standardized flavonoid marker is required.
Personal Care Products
May be evaluated for botanical skin-care, scalp-care and personal-care formulations, subject to compatibility, solubility and stability testing.
Why Purchase from Green Life?
- Standardized to a defined total flavonoid content
- UV assay stated on the product specification and COA
- Clear distinction between leaf, bark and sap ingredients
- Batch-specific quality testing
- Samples available for customer evaluation
- Commercial bulk packaging
- Custom specification support
- Export documentation support
- Direct technical and commercial communication
Any certification, production-capacity or delivery claim should be confirmed in the final quotation and supporting documents.Contact us at sales16@gl-herb.com
Frequently Asked Questions
Q: What is the flavonoid content of your Birch Leaf Extract?
Our standard Birch Leaf Extract Flavone grade contains not less than 5% total flavonoids by UV. Other concentrations may be evaluated upon request.
Q: Is “flavone” the same as “total flavonoids”?
“Birch Leaf Extract Flavone” is frequently used as a commercial product term. However, flavone and flavonoid are not automatically identical analytical descriptions. The controlling product name, assay and test method should always follow the approved specification and COA.
Q: Which part of the birch tree is used?
The product is manufactured from birch leaves. It is not made from birch bark or birch sap.
Q: What is the botanical source?
The botanical source is [confirm the exact species used for the commercial batch]. Green Life can provide the botanical name on the specification sheet and COA.
Q: How is the flavonoid content tested?
The standard 5% grade is tested by UV. The exact analytical method and reference standard are stated in the approved internal method or product specification.
Q: Can you provide a sample and COA?
Yes. Samples and a representative COA are available for product evaluation. Please provide your company name, destination country, required specification, application and estimated order quantity.