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Chemistry and Industry of Forest Products ›› 2018, Vol. 38 ›› Issue (3): 97-102.doi: 10.3969/j.issn.0253-2417.2018.03.013

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Screening and Optimization of Culture Condition of a Pyrogallol-producing Strain

XU Man, WANG Yongmei, ZHANG Liangliang   

  1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
  • Received:2017-12-14 Online:2018-06-25 Published:2018-06-22

Abstract: Three bacteria strains including Enterobacter spp., Lactobacillus brevis and Lactobacillus plantarum were tested for degrading gallic acid into pyrogallol. The factors affecting the activity of gallate decarboxylase from E. spp. and L. plantarum, including substrate concentration, temperature, pH, magnesium sulfate (MgSO4) concentration were also studied. The experiment results showed that the yield of pyrogallol by E. spp. could reach 58.11% with the temperature 28℃, 30 mmol/L gallic acid, 8 mmol/L (NH4)2SO4, 80 mmol/L MgSO4 and pH 6.0 after cultured for 48 h. Meanwhile, the yield of pyrogallol by L. plantarum could reach 83.31% with the temperature 37℃, substrate concentration 10 mmol/L, concentration of (NH4)2SO4 8 mmol/L, concentration of MgSO4 20 mmol/L and pH 6.5 after cultured for 48 h.

Key words: gallic acid, pyrogallol, gallic acid decarboxylase, Enterobacter spp., Lactobacillus plantarum

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