Soybean oil is the natural inexpensive oil extracted from whole soybeans, and is sold as either pure soybean oil or as a main ingredient in vegetable oil. Processed into margarine and shortenings, soybean oil's 85 percent unsaturated fat profile is among the highest of the vegetable oils. Soybean oil contains 61% polyunsaturated fat and 24% monounsaturated fat.