菜籽；硫代葡萄糖苷含量的测定第1部分:高效液相色谱法

[中文适用范围]： 本文件规定了使用梯度洗脱的高效液相色谱法测定油菜籽和油菜籽粕中各个芥子油苷含量的方法。 该方法在油菜籽和油菜籽粕（白菜、甘蓝型油菜和芥菜）上进行了测试，但也适用于其他植物材料，前提是先前鉴定的硫代葡萄糖苷在本文件中进行了描述。 相反，没有对相关芥子油苷进行定量分析。 注：该方法不能测定葡萄糖分子上取代的芥子油苷，但这些化合物在商业菜籽和菜籽粕中并不重要。 附录 A 列出了梯度洗脱 HPLC 方法的实验室间试验结果。 附录B介绍了如何检查制备的内标溶液的滴定度。 附录 C 介绍了如何制备和测试纯化的硫酸酯酶溶液以及如何检查离子交换柱上的脱硫步骤。 附录 D 介绍了 HPLC 和色谱柱性能标准鉴定。 油菜籽中芥子油苷含量的分析也可以使用等度洗脱模式进行。 这需要对方法进行一些修改（内部、标准、HPLC 柱和 HPLC 缓冲液），如附录 E 中所述。 [外文原描述]： This document specifies a method for the determination of the individual glucosinolates content in rapeseeds and rapeseed meals using high-performance liquid chromatography with gradient elution. This method was tested on rapeseeds and rapeseed meals (Brassica rapa, Brassica napus and Brassica juncea) but is applicable to other plant materials, on the condition that the occurring glucosinolates previously identified are described in this document. On the contrary, the quantitative analysis of the concerned glucosinolate(s) is not carried out. NOTE This method does not determine glucosinolates that are substituted on the glucose molecule, but these compounds are of little importance in commercial rapeseed and rapeseed meal. Annex A presents the results of the interlaboratory trials for the gradient elution HPLC method. Annex B presents how to check the titre of the prepared internal standard solution. Annex C presents how to prepare and test the purified sulfatase solution and how to check the desulphation step on the ion exchange column. Annex D presents the HPLC and column performance criteria qualification. The analysis of glucosinolates content in rapeseed can also be done using an isocratic elution mode. This requires some modifications of the method (internal, standard, HPLC column and HPLC buffers), as described in Annex E.