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Table 6 Characteristic of GalOS synthesis by different β-galactosidases in batch process

From: A multifunctional thermophilic glycoside hydrolase from Caldicellulosiruptor owensensis with potential applications in production of biofuels and biochemicals

Enzyme source

Initial lactose concentration (g L−1)

Enzyme loading (Ulactose ml−1 μg ml−1)

Temperature (°C)

Time for reaching maximum yield

GalOS productivity (g L−1 h−1)

Maximum yield of GalOS %

References

Lactobacillus delbrueckii subsp. bulgaricus

205

1.5

>12.2a

50

5 h

19.8

~50

[23]

Bifidobacterium breve

200

2.5

>25.8a

30

6 h

14.7

44

[51]

Thermotoga maritima

500

1.5

>23.6a

80

5 h

18.2

18

[39, 55]

Marine metagenomic library

360

18

267.9

40

~10 h

20.6

57.1

[52]

Caldicellulosiruptor owensensis

500

2.5

8.9

70

50 min

265.2

44.2

This work

  1. aThe given data were calculated using the values of the V max of each enzyme as the specific activity