The essential oils are present in the specific cells called as glandular cells present in the plant part that may be anywhere on plant body. Upon rupture of these glands aroma come out which are volatile in nature and combination of all chemical constituents are fragrance what we get sense. Essential oils are used in perfumery, aromatherapy, cosmetics, incense, medicine, household insect repellent cleaning products, and for flavoring food and drink. They are also valuable commodities in the agricultural industries as anti-feedants, repellents, botanical insecticides, natural herbicides and...