A tannase-producing strain isolated and screened from tannic-acid-rich soil, it was identified as Klebsiella pneumoniae based on the observation of its colony morphology and the molecular biological classification of its 16S rDNA. The fermentation conditions for tannase production of the strain were initially studied. The results showed that the optimal conditions were 37 ℃, cultivated for 36 h at 180 r/min;the content of tannic acid was at 2 g/L, the best carbon source was glucose, and the best nitrogen source was ammonium chloride....
