Plants, Aromatic. plants that produce and exude aromatic substances (largely ether oils), which are used in making perfumes, in cooking, and in the food, pharmaceutical, and liquor industries. Many aromatic plants are species of the Lauraceae, Umbelliferae, Myrtaceae, and Labiatae families.
Aromatic plants possess odorous volatile substances which occur as essential oil, gum exudate, balsam and oleoresin in one or more parts, namely, root, wood, bark, stem, foliage, flower and fruit. The characteristic aroma is due to a variety of complex chemical compounds. The term essential oil is concomitant to fragrance or perfumes because these fragrances are oily in nature and they represent the essence or the active constituents of the plants. They are called volatile or ethereal oils as they evaporate when exposed to air at ordinary temperatures. Essential oils are highly concentrated, low volume, high value products.