Enzymatic activity of Lactobacillus reuteri grown in a sweet potato based medium with the addition of metal ions

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Table 2 Effect of metal ions on α -glucosidase activity (Glu U/mL) produced by L. reuteri

	α-Glucosidase activity (Glu U/mL)*
*L. reuteri*	Control	Fe²⁺	Ca²⁺	Na⁺	K⁺	Mg²⁺	Mn²⁺
MF14-C	40.06	25.90	26.32	38.38	13.71	61.74	58.31
MF14-C	±2.80^bA	±2.72^cA	±3.50^cB	±1.98^bB	±1.70^dBC	±3.09^aA	±2.88^aA
CF2-7F	34.38	20.48	25.20	47.59	10.52	46.30	32.83
CF2-7F	±1.36^bB	±1.75^cB	±1.83^cB	±1.86^aA	±1.30^dC	±2.64^aB	±2.91^bC
DSM20016	31.80	30.20	41.69	46.14	26.22	50.64	55.52
DSM20016	±2.01^dBC	±2.27^dA	±2.89^cA	±2.66^bcA	±1.09^dA	±1.30^aB	±4.68^aA
SD2112	29.34	19.54	20.57	34.58	15.59	35.51	40.55
SD2112	±1.27^cC	±3.89 ^dB	±1.82^dC	±2.32^abB	±1.11^dB	±2.74^abC	±1.90^aB
MM7	25.32	19.40	35.93	37.57	12.59	28.13	35.68
MM7	±2.32^cdCD	±1.75^deB	±3.62^abA	±4.39^aB	±1.83^eBC	±3.22^bcD	±2.63^abC
MM2-3	20.65	18.28	24.79	24.98	14.79	44.11	41.42
MM2-3	±1.70^bcE	±1.49^bcB	±2.72^bB	±2.30^bC	±2.60^eB	±3.20^aB	±3.66^aB

*Data points with different lower case letters in the same row are significantly (p < 0.05) different. Data points with different upper case letters in the same column are significantly (p < 0.05) different.