›› 2015, Vol. 42 ›› Issue (4): 936-942.doi: 10.16431/j.cnki.1671-7236.2015.04.025

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Effect of Sodium Humate on the Growth,Metabolism and Morphology of Lactobacillus plantarum

CAO Ping1, LIU Na2, AN Xiao-ping1, QI Jing-wei1, NAREN Gaowa1, WANG Nai-feng1   

  1. 1. College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China;
    2. Inner Mongolia Si Long Biotechnology Limited Company, Hohhot 011517, China
  • Received:2014-12-11 Online:2015-04-20 Published:2015-05-05

Abstract: The effect of sodium humate with different concentration in the MRS liquid medium on the growth, metabolism and morphology of Lactobacillus plantarum were investigated, to probe the sterilization mechanism of sodium humate. The result showed that in the MRS liquid medium sodium humate (1% to 5%) made the viable count of Lactobacillus plantarum reach the highest point of growth 6 h earlier than control, while it could make the number of Lactobacillus plantarum sightly decreased. Adding 3% sodium humate changed the metabolism of organic acid and made the colony of Lactobacillus plantarum smaller and darker. The result of transmission electron micro-scope showed that the boundaries blur between cell wall and cell membrane. So it followed that in the liquid medium sodium humate inhibited the growth of Lactobacillus plantarum by changing their metabolism and morphology.

Key words: sodium humate; Lactobacillus plantarum; growth; metabolism; morphology

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