High Quality Content by WIKIPEDIA articles! Campesterol is a phytosterol whose chemical structure is similar to that of cholesterol. Many vegetables, fruits, nuts and seeds contain campesterol, but in low concentrations. Banana, pomegranate, pepper, coffee, grapefruit, cucumber, onion, oat, potato, and lemon grass (citronella) are few examples of common sources containing campesterol at ~1-7 mg/100 mg of the edible portion. In contrast canola and corn oil contain as much as 16-100 mg/100mg. Levels are variable and are influenced by geography and growing environment. In addition, different strains have different levels of plant sterols. A number of new genetic strains are currently being engineered with the goal of producing varieties high in campesterol and other plant sterols.