What is Rosmarinic acid (Rosemary extract)?

Rosmarinic acid (Rosemary extract powder) is a chemical compound found in Rosemary (Rosmarinus officinalis L.). It has antioxidant properties. It is considered to be a natural, efficient and stable (high temperature durable), security, non-toxic and none-side-effects, water-soluble antioxidant and a green food additive. Research shows that, rosemary acid has a strong effect to remove Free Radicals. Its antioxidant activity is stronger than vitamins E. It also has broad-spectrum antimicrobial, antivirus, anti-inflammatory, antitumor, anti-platelet aggregation and thrombosis, antiangiogenic, antidepressants, fight neurodegenerative diseases functions.

Rosemary extracts are widely used in the food, nutraceutical and cosmetic areas. Their major bioactive components have shown antioxidant, antimicrobial, anti-inflammatory, antitumorigenic and chemopreventive activities. The bioactive compounds deriving from rosemary leaves are carnosol; carnosic acid, rosmadial, genkwanin, and rosmarinic acid.

Rosemary (Rosmarinus officinalis L.) is one of the most common household herbs, used as spices in a variety of foods, and employed in traditional medicine for its healing properties. Rosemary is a rich source of active antioxidant constituents such as phenolic diterpenes, flavonoids and phenolic acids. Caffeic acid and rosmarinic acid are the most important bioactive constituents. Rosmarinic acid is one of the most important and well known natural antioxidant compounds, which possesses neuroprotective effects in different models of neuroinflammation, neurodegeneration, as well as chemicalinduced neurotoxicity and oxidative stress.

UVA radiation provokes the generation of reactive oxygen species, which induce oxidative stress in the exposed cells leading to extensive cellular damage and cell death either by apoptosis or necrosis. One approach to protecting human skin against the harmful effects of UV radiation is by using herbal compounds as photoprotectants. Rosmarinic acid, used in skin care cosmetics, may offer protection against UVA-induced oxidative stress and may be beneficial as a supplement in photoprotective dermatological preparations.

What is Rosemary Extract?

Rosemary extract is a series natural plant extracts which extracted from Rosmarinus officinalis L, also named rosemary leaf extract. Applied to the skin, rosemary essential oil helps strengthen the capillaries and has a rejuvenating effect. Recent research is now revealing even more benefits attached to this remarkable herb, including its ability to help prevent cancer and age-related skin damage, boost the functioning of the liver and act as a mild diuretic to help reduce swelling. Although rosemary extract has been used commercially as an antimicrobial food preservative for years, now we know for certain that it also has a lot to offer as a nutritional supplement, 1 especially in the prevention of some types of cancer, allergies, and the progression of Alzheimer’s disease.

Rosmarinic acid exhibits various pharmacological activities including prevention of oxidation of low density lipoprotein, inhibition of murine cell proliferative activity and of cyclooxygenase, and anti-allergic action.

Ursolic aicd has wide biological effect and antioxidant effect, which act positively in anti-aging and removing splash. It can prevent and improve wrinkle and old-age splash through restore the skin’s collagen bundle construction and elastic. As a kind of cosmetics, it’s steady, its color and odor won’t change with the time. In addition, it has a good sense of touch.

Carnosic acid has outstanding fat-solubility, which can be used as antioxidant in meat, dairy products, oily-rich products, sweets.

Carnosol is a major component of Rosmarinus officinalis, it is a phenolic diterpene that has potent antioxidant and anti-inflammatory activities.

Rosmarinic acid benefits

  • It has antioxidant, anti-inflammatory and antimicrobial activities.
  • The antioxidant activity of rosmarinic acid is stronger than that of vitamin E.
  • Helps to prevent cell damage caused by free radicals, thereby reducing the risk for cancer and atherosclerosis.
  • Anti-inflammatory properties.
  • Anti-allergic activity.
  • An effective intervention for allergic asthma.
  • Beneficial for the treatment of rheumatoid arthritis. Unlike antihistamines, rosmarinic acid prevents the activation of immune responder cells, which cause swelling and fluid formation.
  • Food preservation.
  • Treat peptic ulcers, arthritis, cataract, cancer, rheumatoid arthritis and bronchial asthma.

Rosmarinic acid (Rosemary extract) Specification

Latin NameRosmarinus officinalis
Part of UsedLeaf
Active IngredientsRosmarinic Acid
CAS No.20283-92-5
SpecificationRosmarinic Acid 2.5%, 5%, 10%,15%, 20%,25%,30% HPLC
AppearanceYellow or Light Yellow Powder
OdorLight Aromatic
Molecular FormulaC18H16O8
Molecular Weight360.33

Shelf Life

2 Years


Store in tightly sealed containers in cool and dry place, away from moisture, light, oxygen.


  • Packed in paper-drums and two plastic-bags inside. N.W:25kgs .I.D.35×H51cm.
  • 1Kg/Bag, aluminum foil bag vacuum packing.
  • Sample, double sealed water plastic bags inside with the aluminum bag outside.

Where to buy Rosmarinic acid (Rosemary extract powder)?

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