Table 2. Yield of precipitate produced from reaction mixture with laccase in (+)-catechin aqueous solution on reaction condition

Enzyme reaction condition		Yield (%)
Reaction temp. (°C)	30	65.3
	40	70.1
	50	58.7
Reaction pH	3.0	61.3
	5.0	63.0
	7.0	68.7
	9.0	27.4
Enzyme amount (%)	0.5	33.4
	1.5	67.5
	3.0	70.1
	5.0	83.7
Substrate amount (%)	0.2	92.5
	0.5	67.5
	1.0	21.3
	3.0	14.9
Substrate	(+)-Catechin	64.7
	Epicatechin	65.2
	EGCG	61.1
	Removed-GA1)	58.0

Removed-GA; removing gallic acid from green tea catechin compounds by enzymatic treatment.