Water Soluble Rosemary Leaf Extract Rosmarinic Acid 5%-98% CAS 20283-92-5 Bulk Powder for Food
Introduction of Rosemary Leaf Extract Rosmarinic Acid
Rosemary Leaf Extract is extracted and purified from fresh rosemary leaves (Rosmarinus Officinalis) by low-temperature solvent separation technology.
The signature active marker of Rosemary Leaf Extract is Rosmarinic Acid, together with carnosic acid, carnosol, flavonoids and polyphenols.
Rosemary Leaf Extract appears light yellow to brown, features outstanding lipid oxidation resistance, anti-inflammatory and antibacterial effects, stable under high temperature, no synthetic preservatives or artificial additives.
Main Specs:
Water soluble components: Rosmarinic Acid 5%,10%,50%,98% (HPLC)
Oil soluble components: Carnosic Acid 5%,10%,20%,98%(HPLC)
Ursolic Acid 25%,50%,98%(HPLC)
Rosemary oil
Water soluble components: Rosmarinic Acid 5%,10%,50%,98% (HPLC)
Oil soluble components: Carnosic Acid 5%,10%,20%,98%(HPLC)
Ursolic Acid 25%,50%,98%(HPLC)
Rosemary oil
Function of Rosemary Leaf Extract Rosmarinic Acid
The efficacy of rosemary extract is primarily attributed to its high concentration of antioxidant phenols and diterpenes. Its most celebrated benefit is its powerful antioxidant capacity, which helps neutralize harmful free radicals in the body, thereby protecting cells from oxidative stress and damage. This action is linked to potential anti-aging, anti-inflammatory, and neuroprotective effects.

Studies suggest it may support cognitive function, including memory and concentration, and offer protection against neurodegenerative diseases. Furthermore, rosemary extract exhibits strong antimicrobial and antibacterial properties against a broad spectrum of foodborne pathogens, making it a natural food preservative. It also shows promise in supporting digestion and circulation. In skincare, its antioxidants help protect the skin from environmental damage, reducing signs of aging. Some research indicates it may have anti-carcinogenic properties by inhibiting the growth of certain cancer cells. Additionally, it is known to help reduce inflammation, which is a root cause of many chronic diseases. Its ability to enhance the shelf-life of fats and oils by preventing rancidity is a key functional benefit in the food industry.
Application Area of Rosemary Leaf Extract Rosmarinic Acid
The application of rosemary extract is diverse, spanning the food, cosmetic, pharmaceutical, and nutraceutical industries. In the food industry, it serves as a natural antioxidant (E392 in the EU) to prevent lipid oxidation and rancidity in meats, poultry, oils, snacks, and baked goods, effectively extending shelf life without synthetic additives.

Its antimicrobial properties also help control foodborne pathogens. In the cosmetic and personal care industry, it is a prized ingredient in anti-aging creams, serums, lotions, and hair care products. Its antioxidants fight skin-damaging free radicals, while its anti-inflammatory properties can soothe irritation. In hair care, it is commonly used to stimulate the scalp, promote hair growth, and improve hair thickness. Within the pharmaceutical and nutraceutical sectors, it is incorporated into dietary supplements for cognitive support, memory enhancement, and overall antioxidant protection. Research is ongoing into its potential use in therapeutic formulations for its anti-inflammatory and anti-cancer properties. Furthermore, it is used in animal feed as a natural preservative and health supplement for livestock. Its versatility and natural origin make it a highly sought-after ingredient across multiple fields.
specification of Rosemary Leaf Extract Rosmarinic Acid
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Rosemary Extract Technical Data Sheet |
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Sense Index |
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Appearance |
Brown powder |
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Odor & Taste |
Characteristic |
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Physical-chemical Index |
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Active ingredient |
Ursolic acid 25%-50%/ Rosmarinic acid 5%-20%/Carnosic acid5-20% |
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Particle Size |
98% pass 80 mesh |
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Loss on drying |
5% Max |
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Ash |
5% Max |
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Heavy metals |
10ppm Max |
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Lead |
2ppm Max |
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Arsenic |
2ppm Max |
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Mercury |
0.1ppm Max |
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Cadmium |
1ppm Max |
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Hygienic Index |
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Total plate count |
1,000cfu/g Max |
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Mold & yeast |
100cfu/g Max |
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Enterobacteriae |
10cfu/g Max |
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E.Coli |
Absent in 10g |
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Salmonella |
Absent in 25g |
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Statements: Non-Irradiated, Non-GMO |
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Packaging: 1kg/aluminium foil bag, 25kg/drum (37*37*50cm). |
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Shelf Life: 24 months stored in original packaging away from the light, and under the optimal temperature 10~25℃. |
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