The Extract Factory stands as a trusted manufacturer and supplier of high-quality Morus Alba Leaf Extract in China, serving the global dietary supplement, functional nutrition, and cosmetic ingredient markets. Our standardized white mulberry leaf extract is engineered for batch-to-batch consistency, full supply-chain traceability, and competitive bulk pricing—making it a strategic choice for formulators, contract manufacturers, brand owners, and wholesale distributors seeking dependable botanical raw materials.
What Is Morus Alba Leaf Extract?
Morus Alba Leaf Extract is a concentrated botanical preparation derived from the dried leaves of Morus alba L., a deciduous tree in the Moraceae family commonly known as the white mulberry. Native to northern China and extensively cultivated throughout Asia, Morus alba has been utilized in traditional wellness practices for centuries. Today, the extract is prized in modern nutraceutical applications for its robust phytochemical profile, which includes flavonoids, phenolic acids, polysaccharides, and the signature alkaloid 1-deoxynojirimycin (DNJ). It is frequently integrated into capsules, tablets, powdered beverages, and topical skincare systems.
Botanical Source & Raw Material Origin
We procure our mulberry leaves from established agricultural regions in China recognized for sericulture and sustainable farming practices. These cultivation zones are selected based on optimal soil chemistry, continental climate patterns, and responsible harvest protocols. Leaves are collected at the peak of their phytochemical development and gently dried under controlled conditions to protect sensitive active compounds prior to extraction.
Botanically, the leaf constitutes the largest share of the tree’s total dry biomass—approximately 65%—making it the most efficient commercial matrix for extraction. Furthermore, the leaves contain the highest relative concentration of DNJ compared to other plant parts such as roots and branches, where the alkaloid is present in significantly lower quantities.
Key Active Constituents
1-Deoxynojirimycin (DNJ)
The primary marker compound for standardization is 1-deoxynojirimycin (DNJ), a naturally occurring polyhydroxylated indolizidine alkaloid. In raw mulberry leaves, DNJ occurs at roughly one-thousandth (0.1%) of the dry weight, necessitating precision concentration during manufacturing. Within the nutraceutical industry, DNJ is scientifically recognized as a potent alpha-glucosidase inhibitor, supporting its inclusion in metabolic health and glucose-management formulations.
Flavonoids & Polysaccharides
Complementing the alkaloid fraction, our mulberry leaf extract delivers valuable secondary metabolites with broad functional appeal. Standardized specifications routinely available include:
- Mulberry Leaf Polysaccharides: typically standardized to 10%
- Mulberry Leaf Flavonoids: typically standardized to 5%
These constituents contribute antioxidant activity and support the extract’s utility in holistic wellness and immune-modulation product lines.
Product Specifications & Standardization
The Extract Factory supplies Morus Alba Leaf Extract in multiple standardized grades to align with diverse formulation strategies. While DNJ is available in various potencies, our flagship commercial specification is DNJ ≥1% verified by HPLC.
Due to the strongly hygroscopic nature of DNJ, the material demands stringent environmental controls during production, milling, and packaging. To safeguard physicochemical stability and prevent moisture-induced degradation, DNJ-enriched grades are manufactured predominantly on an order-by-order basis rather than maintained in open inventory.
Manufacturing Excellence & Quality Assurance
Premium Raw Material Selection
Our quality assurance pipeline begins at the source. We collaborate with growers in regions renowned for superior Morus alba cultivation, assessing soil integrity, climate suitability, and sustainable agricultural compliance. Every incoming lot of leaf material undergoes botanical authentication and incoming contaminant screening before release to the extraction floor.
Advanced Extraction & Processing
Employing state-of-the-art extraction and purification methodologies—including aqueous and hydroalcoholic extraction followed by concentration, purification, and low-temperature spray-drying—we prioritize the preservation of DNJ integrity and the bioactivity of companion polyphenols and polysaccharides. This controlled process enhances the extract’s efficacy and bioavailability while effectively removing extraneous matter and undesirable impurities.
Comprehensive Quality Control
Our production workflow is governed by rigorous internal quality protocols and batch-specific documentation. Full traceability is maintained from harvested leaf to finished powder, ensuring each production lot meets predefined specifications for identity, purity, potency, and safety.
Physical & Chemical Profile
| Parameter | Specification | Test Result | Method |
|---|---|---|---|
| Appearance | Yellow-brown fine powder | Conforms | Visual |
| Odor | Characteristic odor of Morus alba leaf | Conforms | Organoleptic |
| Taste | Characteristic taste of Morus alba leaf | Conforms | Organoleptic |
| Bulk Density (Slack) | — | 0.47 g/ml | USP 616 |
| Particle Size | 95% through 80 mesh | Conforms | CP 2020 |
| Chemical Tests | |||
| DNJ | ≥1% | 1.25% | HPLC |
| Moisture | ≤5% | 3.21% | CP 2015 (105°, 4h) |
| Ash | ≤5% | 3.42% | CP 2020 |
| Total Heavy Metals | <10 ppm | Conforms | CP 2020 |
Microbiological Safety
| Parameter | Specification | Test Result | Method |
|---|---|---|---|
| Total Aerobic Bacterial Count | ≤1,000 CFU/g | Conforms | GB 4789.2 |
| Yeast | ≤100 CFU/g | Conforms | GB 4789.15 |
| Mold | ≤100 CFU/g | Conforms | GB 4789.15 |
| Escherichia coli | <3.0 MPN/g | Conforms | GB 4789.38 |
| Salmonella | Not Detected | Conforms | GB 4789.4 |
| Staphylococcus aureus | Not Detected | Conforms | GB 4789.10 |
Functional Applications & Industry Uses
Morus Alba Leaf Extract is a versatile botanical ingredient with established demand across multiple commercial sectors:
Dietary Supplements & Nutraceuticals
The extract is widely formulated into hard-shell capsules, tablets, and single-serve sachets positioned for metabolic wellness, glycemic balance, and systemic antioxidant support. Standardized DNJ content enables formulators to develop products with consistent, label-claimed potency that meets consumer expectations.
Functional Foods & Beverages
Thanks to its favorable solubility profile, the extract can be incorporated into powdered drink mixes, meal-replacement systems, and fortified confectionery. Its characteristic sensory properties allow for successful integration into various food matrices when paired with appropriate flavor-masking or carrier systems.
Cosmetics & Personal Care
Rich in phenolic acids and flavonoids, Morus Alba Leaf Extract is increasingly utilized in topical applications—including serums, creams, and toners—formulated to soothe irritation, brighten complexion, and defend skin against environmental oxidative stress.
Formulation Compatibility, Solubility & Stability
The water-soluble nature of DNJ and mulberry leaf polysaccharides facilitates easy incorporation into aqueous-based supplement and beverage systems. Certain lipophilic flavonoid fractions may benefit from emulsification or co-solvent technologies when used in oil-based media.
Formulators should note that DNJ-enriched extract is highly hygroscopic. Exposure to ambient humidity during blending or encapsulation can compromise flow characteristics and chemical stability. All handling should occur in controlled low-humidity environments, and finished products should incorporate robust desiccant protection.
Packaging & Storage Recommendations
To preserve stability and commercial shelf life, store the sealed product in a cool, dry, well-ventilated warehouse away from direct sunlight, heat sources, and volatile substances. Relative humidity must be strictly controlled during storage and handling to prevent caking or degradation of moisture-sensitive constituents.
Standard export packaging consists of 25 kg fiber drums with inner double-layer polyethylene (PE) liners, providing an effective moisture and oxygen barrier. Custom packaging configurations, including smaller MOQ sizes or vacuum-sealed aluminum foil bags, are available upon request to accommodate specific regulatory or operational requirements.
Why Partner With The Extract Factory?
- Verified Potency: HPLC-standardized DNJ content with stringent batch-to-batch uniformity.
- Full Traceability: Documented chain-of-custody from cultivated leaf to finished extract powder.
- B2B Manufacturing Flexibility: Bulk wholesale volumes, custom standardization, and production-on-demand for hygroscopic grades.
- Global Market Readiness: Manufactured under stringent quality benchmarks suitable for import into North American, European, and Southeast Asian regulatory environments.
- Technical Customer Support: Responsive service team ready to provide Certificates of Analysis, technical data sheets, and regulatory documentation to accelerate your product development timeline.
Contact Us for Wholesale Procurement
The Extract Factory is committed to advancing the plant extract industry through continuous innovation, uncompromising quality assurance, and collaborative customer partnership. Our Morus Alba Leaf Extract is actively exported to clients across Europe, North America, and Southeast Asia, earning recognition for its reliability, cost-efficiency, and performance in demanding global markets.
To request a quotation, obtain a technical data sheet, or discuss custom specifications for your next formulation, please contact us at [email protected]. We look forward to supplying your business with premium white mulberry leaf extract.
