FOOD SCIENCE ›› 2006, Vol. 27 ›› Issue (2): 241-243.

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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

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