DIN EN ISO 15788-2-2005 动植物脂肪和油.植物油中豆固醇的测定.第2部分:高效液相色谱法
Animal and vegetable fats and oils - Determination of stigmastadienes in vegetable oils - Part 2: Method using high-performance liquid chromatography (HPLC) (ISO 15788-2:2003); German version EN ISO 15788-2:2004
This part of ISO 15788 specifies a method for the determination of steradienes, especially stigmastadienes. Steradienes are formed by dehydration of sterols during bleaching and also partially during steam washing and deodorization. The method is also suitable as a screening method to detect the presence of refined vegetable oils in virgin oils such as virgin olive oil. In view of the precision of the method, samples of virgin olive oil close to the limit adopted by international regulations (IOOC, EG) can be verified by the GLC method given in ISO 15788-1.#,,#