IntroductionRecently, a new concept has invaded the biological and medical sciences, "oxidative stress", where the cell no longer controls the excessive presence of toxic oxygen radicals. 1 The overproduction of the latter beyond the antioxidant capacities of biological systems gives rise to oxidative stress, which is implicated in the appearance of several diseases such as arteriosclerosis, cancer, inflammatory diseases, ischemia and ageing. Inflammation is usually a beneficial process: its purpose is to eliminate the pathogen and repair tissue damage. However, synthetic anti-inflammatory or antioxidant chemical substances are always accompanied by undesirable side effects, while phytochemicals are beneficial and without side effects. 2 Utilizing various medicinal plant parts (such as roots, leaves, seeds, bark, fruits, or flowers) offers a solution. Medicinal and aromatic plants and even cultivated or spontaneous spice plants have exciting biological properties which find application in various fields, including medicine, pharmacy, cosmetology and agriculture. 3 Plant extracts from the Cinnamomum cassia species, used in Chinese medicine, are among the available natural resources.