Ocimum bacilicum L. is an aromatic herb commonly known as sweet basil or sweet tulsi. It is rich in secondary metabolites like phenols, alkaloids, terpenoids, aldehydes, flavonoids, steroids, glycosides, essential oils, saponins, and tannins. The presence of these compounds makes sweet basil one of the most commonly used plant in aromatherapy, perfume, cosmetics, and in foods. The utilization potential of the sweet basil in different industrial section increases its importance. The first chapter underlines secondary metabolites of sweet basil and their importance in different aspects. The...