Effect of Nitrite on Destruction of Bacteria Related to the Fermented Pickles

Abstract

The effects of nitrite on destruction of bacteria related to the fermented pickles were investigated. Gram negative bacteria, Streptococcus, Leuconostoc were destructed earlier by adding 50μg/ml nitrite to fermented pickles. Destruction of nitrite producing bacteria was accelerated by nitrite under acidic conditions, and this effect on the strains belonging to Pseudomonas, Klebsiella, Micrococcus, Enterobacter increased in this order. Accelerating effect of nitrite on destruction of lactic acid bacteria belonging to Streptococcus, Leuconostoc, Pediococcus and Lactobacillus increased in this order. It was found that the growth of lactic acid bacteria and the lowering of pH were inhibited under the condition that the number of nitrite producing bacteria was much more than that of lactic acid bacteria and the concentration of nitrite was high.