脂溶性维生素的分析。十五。维生素D浓缩物中异速甾醇的鉴定。
Analysis of fat-soluble vitamins. XV. Confirmation of isotachysterol in vitamin D concentrates.
作者信息
De Vries E J, Mulder F J, Borsje B
出版信息
J Assoc Off Anal Chem. 1977 Sep;60(5):989-92.
PMID:893337
Abstract
The reaction with maleic anhydride yielding Diels-Alder adducts is used to distinguish vitamin D isomers. Treatment at 100 degrees C for 3 hr eliminates the fast-reacting (tachysterol and trans-vitamin D) and slow-reacting (cis-vitamin D and previtamin D) isomers. However, isotachysterol is not eliminated. The procedure has been incorporated as a confirmation test for isotachysterol in the official final action method for the determination of vitamin D in concentrates, 43.B14-43.B24.
摘要
与马来酸酐反应生成狄尔斯-阿尔德加合物可用于区分维生素D异构体。在100℃下处理3小时可消除快速反应的异构体（速甾醇和反式维生素D）以及缓慢反应的异构体（顺式维生素D和前维生素D）。然而，异速甾醇不会被消除。该程序已被纳入官方最终行动方法中作为异速甾醇的确证试验，用于浓缩物中维生素D的测定，方法编号为43.B14 - 43.B24。
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