Isolation,identification and variation of dominant population from fermented pickle celery
The dominant population variation of pickle celery was investigated,and four lactic acid bacteria strains,L1,L2,L3 and L4 were isolated and identified from the fermented pickle celery.L1 belong to leuconostoc,L2 was lactobacillus brevis,L3 and L4 were lactobacillus plantarum.The changing regularity of the dominant population during the pickle celery spontaneous fermentation was:Bacillus subtilis,yeast,and acetic bacteria were dominant in the first stage of fermentation,then leuconostoc.Anaerobic bacteria were the main species in the middle stage.In the final period,yeasts which can tolerance more acid begain to propagate.Ten days later,if the fermented pickle celery were not sterilized,the mold which can tolerance more acid would be propagate and bring about the decay of products.