天然维生素E分析的样品前处理方法研究新进展

维生素E是一种天然抗氧化剂,有重要的生理功能,其含量的分析检测至关重要。样品前处理在维生素E的分析检测过程中耗时最长,作用也最重要,并在一定程度上决定了样品中天然维生素E分析过程的效率和分析结果的信度。近年来,该领域的研究人员在样品前处理方面做了大量工作,开发出众多简捷、高效、可靠的维生素E提取方法。该文综述了皂化法、溶剂提取法、加压溶剂提取法、超临界流体萃取法和固相萃取法等近年发展起来的天然维生素E提取方法,介绍和评述了其应用及优缺点,并提出了发展方向。

Research Progress on Sample Pretreatment in Natural Vitamin E Analysis

Vitamin E is a natural antioxidant with important physiological functions,which content in food seems so significant to determine.Sample pretreatment toward vitamin E is essential as it is the most important procedure which will take the longest time during separation and determination.Under this circumstance,the efficiency,validity and reliability of evaluation on natural vitamin E mainly depend on sample pretreatment,i.e.extraction methods.In recent years,a lot of work has been done in this field,and a great variety of novel extraction methods for vitamin E have been developed,which have been verified to be simple,effective and reliable.In this paper,the extraction methods such as saponification,direct solvent extraction,pressurized liquid extraction,supercritical fluid extraction,solid phase extraction and their applications are briefly reviewed,their merits and drawbacks are also summarized.In the end,the development tendency for sample pretreatment is proposed.