According to the sensitivity to antibiotics, acidic ability and the carbon source utilization of lactic acid bacteria, the LP-MRS medium for the isolation and enumeration of 9 Lactobacillus spp., the specificity of the medium was evaluated. The inhibiting effect was verified through the quantitative comparison of the Lactobacillus plantarum on LP-MRS medium and MRS medium. The results showed that LP-MRS medium could isolate Lactobacillus plantarum from Lactococcus lactis subsp. lactis, Streptococcus thermophiles, Lactobacillus helveticus, Lactobacillus acidophilus, Bifidobacterium, Lactobacillus casei, Lactobacillus paracasei and Lactobacillus rhamnosus. There was no inhibition of Lactobacillus plantarum. This method is simple, low-cost, and can be widely used in the separation and counting of Lactobacillus plantarum in dairy products.
ZHANG Yao-guang
,
LI Xing-jia
,
QU Ya-li
,
CHAI Yan-bing
,
LI Fei
,
ZHAO Yuan-yuan
,
YANG Chun-jie
. Isolation and enumeration of Lactobacillus plantarum in dairy products[J]. Food and Fermentation Industries, 2018
, 44(9)
: 125
-129
.
DOI: 10.13995/j.cnki.11-1802/ts.015433
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