Rosemary extract 

Latin Name: Rosmarinus officinalis

Apperance: Light yellow to yellow green fine powder

Specification: Carnosic Acid:1%-95% HPLC,Oil soluble;

                          Ursolic Acid : 5%-98% HPLC, Oil soluble;

                          Rosmarinic Acid: 2.5%-98% HPLC, Water soluble;

                          Carnosol ,Salviol:  8%-98% HPLC, Oil soluble;

                          Rosemary Essence Oil: 100%;

                          Ratio product: 5:1,10:1,20:1 TLC.

Test Method: HPLC / TCL.

Description:

Antioxidant Activity of Rosemary Extract

Rosemary extract is popular as a natural antioxidant due to its strong antioxidant capacity and fat-soluble property. The use of rosemary extract as a natural antioxidant was first reported in 1955. Scientists found that rosemary extract as a natural antioxidant had a better antioxidant capacity than BHT and BHA. It was reported that all rosemary extracts showed strong inhibitory effects on lipid oxidation. The antioxidant capacity of rosemary extract was attributed to the presence of phenolic diterpenes that scavenge singlet oxygen, hydroxyl radicals, and lipid peroxyl radicals, thereby preventing lipid oxidation. Three types of phenolic diterpenes are found in rosemary extract: carnosic acid, carnosol, and rosmanol; with carnosic acid present as the major phenolic diterpene. In addition, studies indicated that carnosic acid was the most active antioxidant component in rosemary extracts.