Products
Natural Rosemary Leaf Extract Rosmarinic Acid Powder
Food Grade Extract
Natural Rosemary Leaf Extract Rosmarinic Acid Powder
Most formulators know rosemary for its aroma, but the leaf also carries rosmarinic acid, a water-soluble phenolic acid we isolate by liquid-solid extraction. We standardize each batch from a 5:1 ratio to 98% rosmarinic acid by UV/HPLC, delivering a brown to off-white powder through 80 mesh. As a Shaanxi manufacturer we supply it in bulk for food, beverage and cosmetic work where a plant-based stabilizer and preservative aid is needed.
Manufacturer
Food Grade
Free Sample
Product Specifications
| CAS Number | 20283-92-5 |
| Molecular Formula | C18H16O8 |
| Molecular Weight | 360.31 |
| Specification | Ratio 5:1, 10:1, 20:1; Standardized 50%, 98% Rosmarinic Acid |
| Appearance | Brown to off-white fine powder |
| Plant Part | Leaf (Rosmarinus officinalis L.) |
| Extraction Type | Liquid-solid extraction |
| Grade | Food Grade |
| Test Method | UV / HPLC |
| Particle Size | 80 mesh (100% through) |
| Solubility | Soluble in water, ethanol, methanol |
| Shelf Life | 24 months (sealed, cool, dry) |
| Place of Origin / Brand | Shaanxi, China / Demeter |
Key Highlights
01Declared rosmarinic acid assay — from 5:1 botanical ratio to 98% purified grade, verified by UV/HPLC per lot.
02Aqueous-friendly molecule — it goes into water, ethanol and methanol, reaching the water side of drinks and emulsions.
03Botanical, not synthetic — extracted from Rosmarinus officinalis L. leaf, a clean-label option for food and personal care.
04Ready to blend — 80 mesh fine powder in brown to off-white tone, easy in dry mixes, tablets and sachets.
05Factory-direct supply — Demeter ships bulk rosmarinic acid from Shaanxi with full COA support.
06Private label and sample — trial quantities offered so buyers confirm assay before scaling up.
Certificate of Analysis
| Item | Specification | Result | Method |
| Appearance | Brown to off-white powder | Complies | Visual |
| Rosmarinic Acid | Declared grade | Complies | UV/HPLC |
| Particle Size | 100% through 80 mesh | Complies | GB/T 5917.1 |
| Loss on Drying | NMT 5.0% | Complies | GB 5009.3 |
| Heavy Metals (Pb) | NMT 10 ppm | Complies | GB 5009.74 |
| Total Plate Count | NMT 1000 cfu/g | Complies | GB 4789.2 |
Function & Wellness
Water-soluble
Dissolves in water, ethanol and methanol for aqueous systems and beverage dosing.
Standardized assay
Each lot set to a declared rosmarinic acid grade, giving predictable batch composition.
pH stable
Stable from acid to neutral range; shield it from heat and light with cool, dark storage.
Clean label
Plant-derived from rosemary leaf, a natural alternative to synthetic food additives.
Applications
Food preservation
Works as a plant-based aid in edible oils, meat and bakery products to support shelf life.
Functional drinks
Water-soluble form fits beverages and instant teas as the standardisation marker.
Personal care
Blended into creams, lotions and mouth-care products as a botanical part of skin routines.
Supplements
Bulk powder standardized for capsule and health-protect use, carrying rosemary polyphenols as the marker.
Condiments & spices
Blends into seasonings and marinades where a plant-derived aid is preferred.
