农产食品 粗纤维含量的测定 一般方法

[中文适用范围]： 该方法包括用硫酸溶液煮沸（在任何必要的研磨和脱脂之后），以及分离和洗涤不溶性残留物。 将此残渣与氢氧化钠溶液煮沸，然后分离、洗涤、干燥、称重不溶残渣，并测定焚烧时的质量损失。 附录 A 详细说明了脂肪物质的提取方法。 附件 B 提供了用于分离粗纤维的各种装置以及有关其使用程序的补充信息。 [外文原描述]： The method consists in boiling with sulphuric acid solution (after any necessary grinding and defatting), and separation and washing of the insoluble residue. Boiling this residue with sodium hydroxide solution, then separation, washing, drying and weighing of the insoluble residue, and determination of the loss in mass on incineration. An annex A specifies methods of extraction of fatty substances. An annex B gives various devices for the separation of crude fibre and supplementary information on the procedures for their use.