Phytosterol is ond kind of important steroids. It can be mainly obtained from waste oil of refining vegetable oil especially from deoderizer distillate (DD oil).

• 植物甾醇是一类非常重要的甾体化合物，主要来源于精炼植物油中的下脚料，特别是脱臭馏出物(又名DD油)中。