食品科学 ›› 2006, Vol. 27 ›› Issue (2): 241-243.

• 分析检测 • 上一篇    下一篇

泡菜中亚硝酸盐测定方法研究

 周文斌   

  1. 重庆工商大学环境与生物工程学院
  • 出版日期:2006-02-15 发布日期:2011-09-05

Method of Nitrite Assay for Pickled Vegetables

 ZHOU  Wen-Bin   

  1. College of Environment and Biological Engineering, Chongqing Technology and Business University, Chongqing 400067, China
  • Online:2006-02-15 Published:2011-09-05

摘要: 通过试验发现:在进行泡菜样品中亚硝酸盐提取时,提取的最佳条件是在70℃的水浴中提取30~45min;样品液中加入2g活性炭粉,能有效的排除色素和抗坏血酸对亚硝酸盐测定造成的干扰;显色剂先加入2ml对氨基苯磺酸溶液,5min后再加入1mlN-1-萘乙二胺盐酸溶液,使显色稳定。

关键词: 泡菜, 亚硝酸盐, 测定

Abstract: In pickled vegelables experiments found: that the optimum nitrite extract conditions were: 30 ~45min in 70℃ in water bath; with active carbon added to reduce the interference errors of assaying nitrite in the pickle; then with sulfanilic acid solution 2ml added to the sample first , to incubate for 5 min, then finaly with N-(1-naphthyl)-ethylenediamine hydrochloride 1ml added to make the colored azo compound stabilized.

Key words: pickled vegetable, nitrite, determination