xi'an land nutra co.,ltd 
Description of mulberry leaf extract
Mulberry leaf extract contains mulberry leaf flavonoids, mulberry leaf polyphenols, mulberry leaf polysaccharides, DNJ, GABA and other physiologically active substances. The extract is made from mulberry leaf powder processed from new leaves on mulberry branches in the late spring silkworm season or before frost, dried in the shade, crushed, heated and extracted with n-butanol, 90% ethanol and water respectively, and spray-dried.
Specification of mulberry leaf extract
| Item | Details |
|---|---|
| Botanical Source | Mulberry (Morus alba) |
| Part Used | Leaves |
| Components | Mulberry leaf flavonoids, mulberry leaf polyphenols, mulberry leaf polysaccharides, DNJ, GABA, etc. |
| Product Specification | – 10:1, 20:1 – Flavonoids content: 10%~30% – 1-DNJ content: 1%~15% – Polysaccharide content: 10%~50% |
| Appearance | Brown yellow fine powder |
| Testing Methods | TLC/UV/HPLC |
| Packaging | – Within 5KG: Double-layer plastic packaging with aluminum foil outside – More than 25KG: Cardboard barrel packaging – Standard packaging: 25KG/drum |
| Storage Conditions | Should be sealed, light-proof, and stored in a dry, cool, well-ventilated place. Valid for two years. |
| Item | Specification | Result |
|---|---|---|
| 1-Deoxynojirimycin (1-DNJ) content | Not Less Than 1% | 1.05% |
| Appearance | Brown yellow powder | Conforms |
| Odor | Characteristic | Conforms |
| Particle Size | 100% passes 80 mesh | Conforms |
| Inorganic Impurities | Not More Than 5.0% | 4.22% |
| Moisture Content | Not More Than 5.0% | 3.62% |
Heavy metal and microbiological analysis：
| Item | Specification | Result | Notes |
|---|---|---|---|
| Lead content | NMT 2 ppm (Not More Than 2 parts per million) | Conforms | Heavy metal |
| Cadmium content | NMT 1 ppm (Not More Than 1 part per million) | Conforms | Heavy metal |
| Mercury content | NMT 1 ppm (Not More Than 1 part per million) | Conforms | Heavy metal |
| Arsenic content | NMT 2 ppm (Not More Than 2 parts per million) | Conforms | Heavy metal |
| Total Aerobic Colony Count | NMT 1,000 cfu/mg | Conforms | Bacterial contamination |
| Yeast and Mold | NMT 25 cfu/mg | Conforms | Fungal contamination |
| Escherichia coli | NMT 40 MPN/100g | Conforms | Fecal indicator |
| Staphylococcus aureus | Negative | Conforms | Pathogenic bacteria |
