食品科学 ›› 2010, Vol. 31 ›› Issue (18): 298-300.doi: 10.7506/spkx1002-6630-201018070

• 分析检测 • 上一篇    下一篇

铁盐法定量检测原料乳中硫氰酸盐

王丹慧1,张凤梅2,李 梅1,刘卫星1   

  1. 1.内蒙古蒙牛乳业(集团)有限公司 2.内蒙古农业大学
  • 收稿日期:2009-09-11 出版日期:2010-09-25 发布日期:2010-12-29
  • 通讯作者: 王丹慧 E-mail:wangdanhui2006@126.com

Quantification of Sodium Sulfocyanate in Raw Milk by Ferric Salt Method

WANG Dan-hui1,ZHANG Feng-mei2,LI Mei1,LIU Wei-xing1   

  1. 1. Inner Mongolia Mengniu Dairy Industry (Group) Co. Ltd., Hohhot 011500, China;
    2. Inner Mongolia Agricultural University, Hohhot 010018, China
  • Received:2009-09-11 Online:2010-09-25 Published:2010-12-29
  • Contact: WANG Dan-hui1 E-mail:wangdanhui2006@126.com

摘要:

研究原料乳中硫氰酸钠定量检测方法,原料乳样品经过蛋白沉淀后,向滤液中加入铁盐溶液,样液的颜色变化与硫氰酸盐掺入量有关,通过样液的吸光度计算出硫氰酸盐含量。通过对标准溶液线性关系、检出限、回收率、重复性的验证,以及与离子法的对比实验,结果表明,该方法用于检测原料乳中硫氰酸根质量浓度在30mg/L 以下具有良好的线性、回收率、重现性,方法操作简单、结果准确,适用于乳品企业进行原料乳质量检验。

关键词: 原料乳, 硫氰酸盐, 掺假

Abstract:

For the examination of thiocyanate adulteration, raw milk samples were subjected to protein precipitation and filtration and the filtrate was then added with ferric salt solution and the calculation of thiocyanate content based on absorbance determination due to color change caused by the reaction between thiocyanate and ferric salt was performed. This method was successfully used to thiocyanate determination in raw milk with excellent linearity, high recovery rate and good repeatability at sulfocyanate concentrations of less than 30 mg/L. In general, this method is suitable for the quality test of diary products due to its simple operation and accurate results.

Key words: raw milk, sodium sulfocyanate, detection, ferric salt method

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