The formation and degradation mechanism of nitrite in pickle

Pickle as a traditional fermented vegetable products,loved by consumers,but excessive nitrite content of fermentation process,final product,and is the main factors which restrict the development of the pickle.Pickle fermentation process was studied by nitrite formation and degradation mechanism.Its mechanism is: in the early stage of the fermentation bacteria nitrate reductase nitrite and nitrate can be converted to cause nitroso peak appeared.By late fermentation with pH decline,nitrite reductase and lactic acid bacteria produce acid synergy can rapidly degrade nitrite,including organic degradation plays a leading role.pH 4.0 optimum pH of nitrite reductase,and degradation of nitroso peak starting point.