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texto impreso
A method for producing gallic acid by microbiological hydrolysis of the tannins of tara powder is described. A simple extraction procedure is used. Optimal values for parameters including pH and aeration are determined. Yields of gallic acid are[...]![]()
texto impreso
A spectrophotometric method to determine gallic acid, residual gallotannin and tannin acyl hydrolase (EC 3.1.1.20) activity during microbial hydrolysis of pentagalloyl glucose is described. The following equations have been developed to estimate[...]