Table 2. Enzyme activities of commercial enzyme products and initial enzyme activities in nonsteamed rice mash

Enzyme products	Commercial enzyme products (U/g)		Initial nonsteamed rice mash (U/mL)
Enzyme products	α-Amylase	Gluco-amylase	α-Amylase	Gluco-amylase
White koji	31.90±1.09^f1)2)	698.32±14.70^f	3.81±0.13^d	83.10±1.75^b
Modified nuruk	3,532.71±189.29^e	4,899.58±103.15^e	126.18±6.76^a	175.00±3.68^a
Chung-moo PE³⁾	139,453.89±1,361.76^b	13,517.41±514.08^d	27.89±0.27^c	2.70±0.10^e
Nurukzyme R400	18,729.84±1,772.37^b	94,999.60±4,026.95^b	3.75±0.35^d	19.00±0.81^d
Sanferm yield	225,182.00±99,132.84^a	14,382.64±8,175.06^c	45.04±0.00^b	2.88±0.64^e
Diazyme X4	5,604.15±207.45^d	120,822.41±3,150.71^a	1.12±0.04^d	24.16±0.63^c
CE⁴⁾ against alcohol production			r=0.309 (p=0.551)	r=0.815 (p=0.048)

All values are mean±SD (n=3).
^a-fMeans with different superscripts in the same column are significantly different at p<0.05 by Duncan’s multiple range test.
Chung-moo PE means Chung-moo purified enzyme.
CE means the correlation coefficient between alcohol concentration as shown in Table 1 and two amylase activities (α-, gluco-). The initial enzyme activities in nonsteamed rice mash were calculated based on the amount of added enzyme products.