Meat and meat products — Determination of nitrate content (Reference method) This publication was last reviewed and confirmed in 2024. Therefore this version remains current. The method consists in extracting of a test portion with hot water, precipitating of proteins and filtrating.

INTERNATIONAL STANDARD IS0 3091-1975 (E) Meat and meat products - Determination of nitrate content (Reference method) 1 SCOPE AND FIELD OF APPLICATION This International Standard specifies a reference method for the determination of the nitrate content of meat and meat products. 2 REFERENCES

International Standard ISO 3091 was drawn up by Technical Committee ISO/TC34, Agricultural food products, and circulated to the Member Bodies in May 1974. It has been approved by the Member Bodies of the following countries :

2025年2月10日 · ISO 3091:1975 发布 1975年 总页数 8页 发布单位 国际标准化组织 当前最新 ISO 3091:1975 适用范围 该方法包括用热水提取测试部分、沉淀蛋白质并过滤。 用金属镉将提取的硝酸盐还原成亚硝酸盐。 加入磺胺和盐酸萘乙二胺形成红色，并在538 nm波长处进行光度测量。

ISO 3091-1975,The method consists in extracting of a test portion with hot water, precipitating of proteins and filtrating. Reduction of the extracted nitrates into nitrites by metallic cadmium. Formation of a red colouration by adding of sulfanilamide and nphthyl ethylenediamine hydrochloride and photometric measurement at a wavelength of 538 nm.

2024年7月28日 · ISO3091：1975是关于肉类和肉制品中硝酸盐含量的测定（参考方法）。 硝酸盐是一种常见的添加剂，用于肉类和肉制品的防腐和保存。 这种方法通常被称为“电位滴定法”，它是一种通过测量溶液中硝酸盐在滴定过程中产生的电位变化来确定硝酸盐含量的方法。 这种方法是参考方法，因为它不是唯一或最准确的方法，但它是被广泛接受和使用的标准方法之一。 使用电位滴定法测定硝酸盐含量需要准备肉类或肉制品样品，将其磨碎或粉碎，然后在适当的环境条件下 …

iso 3091:1975肉类和肉制品——硝酸盐含量的测定（参考法） 该方法包括用热水提取供试品，沉淀蛋白质并过滤。 用金属镉将提取的硝酸盐还原成亚硝酸盐。

Find the most up-to-date version of ISO 3091 at GlobalSpec.

Meat and meat products — Determination of nitrate content (Reference method) The method consists in extracting of a test portion with hot water, precipitating of proteins and filtrating. Reduction of the extracted nitrates into nitrites by metallic cadmium.

iso 3091:1975 en 标准规定了肉及肉制品中硝酸盐含量的测定方法参考方法。 该标准适用于各种类型的肉及肉制品，包括牛肉猪肉羊肉禽肉鱼类海鲜等。 该标准采用分光光度计法进行测定，具有准确度高操作简便快速的特点。