Essential oils, also known as volatile oils, are volatile oily liquids that exist in plants and can be distilled with steam. They are usually stored in the epidermis of medicinal plants in the form of oil droplets or coexist with resins in resin canals.
Margarine has gotten a bad rap for years, but a U.S. ban on partially hydrogenated oils may have made it a healthier choice than butter, a new study suggests.