Catalytical Properties of Free and Immobilized Aspergillus niger Tannase

Table 1

Kinetic constants of free and immobilized tannase.

Microorganism	Substrate	Free tannase		Immobilized tannase		Reference
		𝐾𝑀; mM	𝑉Max; μmol/min	𝐾𝑀; mM	𝑉Max; μmol/min
Rhizopus oryzae	Sal seed	30.9*	4.4**	39.9*	4.0**	[18]
Rhizopus oryzae	Myrobalan	26.3*	9.4**	29.0*	2.4**	[18]
Rhizopus oryzae	Tea leaf	26.4*	0.47**	30.5*	0.46**	[18]
Aspergillus oryzae	Tannic acid	7.35	80	11.76	40	[14]
Aspergillus niger	Tannic acid	0.3	0.013	0.6	0.020	[24]
Aspergillus niger	Tannic acid	1.1×10^−5	416	1.1×10^−5	131	[22]
Aspergillus niger	Tannic acid	0.400	0.05	23.75	0.25	This study
Aspergillus niger	Methyl gallate	0.433	0.033	0.529	0.003	This study

*These results are expressed as mg/mL.
**These results are expressed as U/mL/h.