标准编号：ISO 28198:2018
中文名称：植物的脂肪和油 甲苯不溶物的测定
英文名称：Vegetable fats and oils — Determination of toluene insoluble matter
发布日期：2018-09
标准范围
This document specifies a method for the determination of the content of toluene insoluble matter (TIM)
in lecithin formulations, which indicates the presence of impurities such as protein, carbohydrate-
containing extraction residues and other solid contaminants. This method is applicable to all types of
vegetable lecithin.
The purpose of the method is to enable the analysis of lecithin under several regulations. Lecithin
[Codex International Numbering System for Food Additives (INS) No. 322] is a generally permitted
additive and the determination of the TIM is part of many specifications. The purity requirement with
regard to TIM content is based on the method specified.
Toluene is the replacement for the carcinogenic benzene, which was used in older methods.
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