Optimization of Process Conditions for Multi-Microbial Fermentation of Pomegranate Fermentation Juice
In this study,the suitable strains from 5 lactic acid bacteria(Lactobacillus bulgaricus,Lactobacillus plantarum,Lactobacillus acidophilus,Lactobacillus lactis,Bifidobacterium lactis)and their ratios were screened and optimised for the fermentation of pomegranate enzyme using a one-way experiment and a homogeneous design and the fermentation process of pomegranate enzyme was optimised using orthogonal test.The results showed that the ratios of composite bacteria(Lactobacillus plantarum,Lactobacillus lactis,Bifidobacterium lactis)were 1.625:1.250:1.100,and the optimal fermentation conditions were as follows:13％sugar addition,36 h fermentation time,38℃ fermentation temperature,and 3％bacterial species addition,and the pomegranate enzyme fermented under the conditions had a bright red colour,a slightly sweet texture,and a unique flavour.
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