离子色谱法在测定糖副产品中亚硝酸盐和硝酸盐污染方面的应用。

The use of ionic chromatography in determining the contamination of sugar by-products by nitrite and nitrate.

作者信息

Antczak-Chrobot Aneta, Bąk Paulina, Wojtczak Maciej

机构信息

Institute of Food Technology and Analysis, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland.

出版信息

Food Chem. 2018 Feb 1;240:648-654. doi: 10.1016/j.foodchem.2017.07.158. Epub 2017 Aug 2.

DOI:10.1016/j.foodchem.2017.07.158

PMID:28946324

Abstract

In 2010, the Directive on undesirable substances in animal feed entered into force and for the first time was laid down a maximum limit for nitrite content in sugar industry feed materials such as molasses and beet pulp. Due to a lack of suitable analytical methods for nitrite determination, this study was developed with the aim to standardize a nitrite analytical method in by-products from sugar industry. In this study high performance anion exchange chromatography with conductometric detection was used for determining nitrite and nitrate content of sugar by-products included in feed material. The study confirms the usefulness of the applied ion chromatographic method for the evaluation of the content of nitrite and nitrate in sugar by-products. The results showed that in many samples of beet pulp and molasses the content of "undesirable substances for animal feed" was below 15mgkg (expressed as sodium nitrate at 12% of moisture).

摘要

2010年，《动物饲料中有害物质指令》生效，首次规定了糖蜜和甜菜粕等制糖工业饲料原料中亚硝酸盐含量的最高限量。由于缺乏合适的亚硝酸盐测定分析方法，开展了本研究，旨在规范制糖工业副产品中亚硝酸盐的分析方法。本研究采用带电导检测的高效阴离子交换色谱法测定饲料原料中糖副产品的亚硝酸盐和硝酸盐含量。该研究证实了所应用的离子色谱法在评估糖副产品中亚硝酸盐和硝酸盐含量方面的有效性。结果表明，在许多甜菜粕和糖蜜样品中，“动物饲料有害物质”的含量低于15mg/kg（以含水量12%的硝酸钠表示）。