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Table 3 Production of α-Amylases by 2-Deoxy D-Glucose Resistant Mutant Derivatives of A. oryzae Grown under Submerged Conditions on Soluble Starch

From: Random mutagenesis of super Koji (Aspergillus oryzae): improvement in production and thermal stability of α-amylases for maltose syrup production

Sr. #

γ-ray Exposure

α-amylase (U ml-1 )

Protein (mg ml-1 )

Specific activity (U mg-1 )

1

Parental Koji

6.55±0.45

0.21±0.011

31.8

2

M-60(M5)

15.49±1.05

0.14±0.007

114.5

3

M-80(10)

26.65±1.81

0.11±0.006

251.5

4

M-80(11)

9.76±0.57

0.14±0.007

70.0

5

M-80(12)

4.92±0.29

0.1±0.005

48.9

6

M-100(6)

26.77±1.39

0.07±0.004

370.7

7

M-100(12)

17.83±0.93

0.05±0.003

332.7

8

M-120(5)

26.22±1.36

0.12±0.006

215.2

9

M-120(11)

21.05±1.10

0.18±0.009

118.0

10

M-140(6)

19.47±1.01

0.26±0.013

75.7

  1. Data presented are average values ± SD of n = 3 experiments