Table 1. Changes in enzyme activities of pellet-type Nuruk by different material conditions during fermentation

(units: unit/g)

Culture time (h) Glucoamylase α-Amylase Acidic carboxypeptidase
S1) N S N S N
0 ND2) ND ND
8 0.23±0.05o3) 4.47±0.41n 2.29±0.16q 13.02±0.05p 549.07±20.53n 274.67±30.40o
16 10.36±0.71m 6.34±1.67n 48.56±0.19n 24.97±0.22o 1,231.13±0.49l 592.59±12.87m
24 109.89±0.87l 128.96±0.44k 143.34±2.67l 97.78±0.06m 2,115.01±33.46j 1656.85±147.39k
32 325.91±1.02a 141.44±0.43j 421.26±1.16a 189.8±0.14j 3,803.82±10.39e 2577.1±22.57h
40 193.09±1.63i 195.57±1.05i 258.35±4.54f 229.35±0.15h 4,366.55±6.18b 3,133.26±100.55f
48 213.65±1.83h 232.67±1.30g 302.71±1.69b 240.86±0.76g 4,568.67±88.92a 2,691.18±52.80g
56 300.89±2.98c 244.98±0.98e 277.24±1.51d 195.15±1.49i 4,129.89±20.51d 2,232.34±155.98i
64 319.90±2.93b 236.68±0.95f 293.88±2.55c 184.65±1.32k 4,247.12±30.47c 2,494.97±24.79h
72 294.19±3.87d 232.32±0.93g 271.02±1.93e 183.16±1.35k 4,082.36±39.18d 2,329.99±63.18i
1)S, sterilized pellet; N, nonsterilized pellet.
2)ND not detected.
3)Values represent means±SD and values with different superscripts in the columns of same enzyme activity are significantly different at p<0.05.