Study of the effect of dietary fiber fractions obtained from artichoke (Cynara cardunculus L. var. scolymus) on the growth of intestinal bacteria associated with health

ELIANA FISSORE; CINTHIA SANTO DOMINGO; LIA NOEMI GERSCHENSON; LEDA GIANNUZZI

Food & Function

Royal Society of Chemistry

Año: 2015 vol. 6 p. 1667 - 1674

2042-6496

The effect of different fractions enriched in soluble fiber obtained from artichoke using citric acid or citric acid / hemicellulase, on the selective growth of Lactobacillus plantarum 8114 and Bifidobacterium bifidum ATCC 11863 was evaluated. Gompertz modeling of Lactobacillus plantarum 8114 growth showed a higher specific growth rate (ì: 0.16 h-1) in the presence of fraction isolated from stem using hemicellulase (fraction A) than in the presence of glucose (ì: 0.09 h-1). In the case of Bifidobacterium bifidum 11863, the highest ì was obtained for the microorganism grown in the presence of fraction A and for the fraction isolated from stem without hemicellulase, being their rate twice the one observed for glucose (0.04 h-1). The positive prebiotic activity scores observed with respect to Escherichia coli 25922 indicated that fibers assayed are metabolized as well as glucose by Lactobacillus plantarum 8114 and Bifidobacterium bifidum ATCC 11863 and that they are selectively metabolized by these microorganisms. The potential capacity for selectively stimulate the growth of intestinal bacteria associated with health shown by fraction A can be ascribed to its high inulin and low methylation degree pectin contents.