. Author manuscript; available in PMC: 2018 Jul 2.

Published in final edited form as: J Agric Food Chem. 2017 Mar 20;65(14):2965–2976. doi: 10.1021/acs.jafc.6b04982

Table 3.

β-Galactosidase Activity in Cell-free Lysate of the Induced and Noninduced Cells of L. plantarum WCFS1 Carrying Various Plasmids^a

	volumetric activity (U/mL fermentation broth)		specific activity (U/mg protein)
plasmid	noninduced	induced	noninduced	induced	induction factor
pSCBDlac1	1.45 ± 0.48	32.86 ± 3.55a	7.35 ± 2.44	178.90 ± 10.05e	24
pSCBDlac2	0.77 ± 0.19	11.31 ± 1.20b	4.06 ± 1.09	57.29 ± 6.24f	14
pSCBDlac3	16.77 ± 1.02	65.83 ± 1.53c	9.43 ± 0.14	40.27 ± 2.36g	4

The data are expressed as the mean ± standard deviation from three independent cultivations. The induction factors are calculated by dividing the specific activity (U/mg) of induced and noninduced cells. The letters indicate significant difference (p < 0.05).