essential oils are found in different parts of the plant:
flowering tops lavender.chamomile
grass lemongrass.palmarosa
leaves peppermint.cinnamon
peel lemon.bergamot.orange
seed cardamon.fennel
twig cypress.tea tree.eucalyptus
wood rosewood.cedarwood
gum frankincense
Because of their properties, essential oils are widely used in perfumes,
flavorings and medicines. The main methods are steam distillation, by compression, dissolving the oils out (extraction) or absorbing them, and by pressure and maceration (to separate […]