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Table 1 Synthesis activities of individual enzymes provided by the free and immobilized cell catalysts before and after incubation at 45 °C for 30 h

From: Continuous process technology for bottom-up synthesis of soluble cello-oligosaccharides by immobilized cells co-expressing three saccharide phosphorylases

 

Free cell catalyst

Immobilized cell catalyst

Before incubation

After incubation

Loss

Before incubation

After incubation

Loss

U/gCDWa

Activity ratio

U/gCDWa

Activity ratio

%

U/gCDWa

Activity ratio

U/gCDWa

Activity ratio

%

BaScP

4500 ± 200

10

910 ± 20

10

80

1760 ± 60

10

750 ± 80

10

57

CuCbP

1700 ± 100

3.8

510 ± 80

5.6

70

224 ± 30

1.3

64 ± 10

0.9

71

CcCdP

600 ± 40

1.3

270 ± 10

2.9

55

380 ± 30

2.1

154 ± 35

2.0

59

  1. aSynthesis direction at 45 °C; one unit (U) of activity is the enzyme amount producing 1 µmol αGlc1-P (BaScP) or phosphate (CuCbP, CcCdP) per min under the conditions employed (see “Enzyme activity measurements” section). Standard deviations were calculated from three assay reactions with the same catalyst