To overcome this problem, several studies have been carried out in order to find natural products that possess antioxidant activity (AA). Plants, including herbs and spices, are known to have many phytochemicals that could be potential sources of natural antioxidants. Rosemary (Rosmarinus officinalis L.) has been widely accepted as a spice with one of the best antioxidant activities. The compounds responsible for rosemary’s antioxidant properties are mainly phenolic diterpenes, such as carnosol, carnosic