The EO can be extracted from various parts of plants including the leaves, flowers, stem, seeds, roots and bark; however, the composition of the EO can vary among different parts of the same plant, such as, EO obtained from the C. sativum seed has different composition from the EO of C. sativum flower as well as cilantro (immature leaves) ( Table 2). The C. sativum oil from fully ripe and dried seeds is a colourless or pale yellow liquid with a characteristic odour and mild, sweet, warm and aromatic flavour, and linalool is its major constituent [4]. While aliphatic aldehydes (mainly C10–C16 aldehydes), with their unpleasant odour, are the main components of the volatile oil from the fresh herb [13], linalool and other oxidized monoterpenes as well as monoterpene hydrocarbons predominate in the oil distilled from the fruit [