Production Optimization of an Active -Galactosidase of Bifidobacterium animalis in Heterologous Expression Systems

Table 3

Enzymatic properties of bG42-106 and its microbial counterparts.

Microbial source		(°C)	Specific activity; (U/mg)	References
B. animalis ACCC05790	6.0	60	2351	This study
B. breve B24	7.0	45	8073.60	[14]
Thermus sp. T2	6.5	80–90	900	[7]
Paecilomyces aerugineus	4.5	60	820	[15]
B. infantis HL96	7.5	60	569	[9]
B. adolescentis DSM20083	6.0	50	526	[16]
Lactobacillus delbrueckii	5.0–5.5	35–50	430	[17]
Kluyveromyces fragilis	6.5	—	250–290	[18]
L. reuteri	7.0	50	180–190	[8, 19]
L. plantarum WCFS1	7.5	55	154	[20]
Bacillus stearothermophilus	7.0	70	125	[21]
Archaebacterium sulfolobus	—	—	116	[22]
Arthrobacter sp.	7.0	18	115	[23]
Halorubrum lacusprofundi	6.5	50	110.83	[24]
Aspergillus niger van Tiegh	2.0–4.0	65	69.3	[6]
Streptococcus mitis	6.0–6.5	30–40	2.5	[25]

These data were converted from nmol for comparison purpose.