ISO 15788-1-1999 动植物油脂 植物油中豆甾烯的测定 第1部分:柱层层析气相色谱法(参照法)
Animal and vegetable fats and oils - Determination of stigmastadienes in vegetable oils - Part 1: Method using capillary-column gas chromatography (Reference method)
This part of ISO 15788 specifies a method for the determination of stigmastadienes in virgin vegetable oils containing low concentrations of these hydrocarbons, particularly in virgin olive oil.
This method is applicable to all vegetable oils although measurements are reliable only where the content of these hydrocarbons lies between 0,01 mg/kg and 4,0 mg/kg. The method is suited to detecting the presence of refined vegetable oils (olive, olive pomace, sunflower, palm, etc.) in virgin olive oils, since refined oils contain stigmasta-dienes and cold-extracted oils do not.