Title
Effect of soluble and insoluble fibers within the in vitro fermentation of chicory root pulp by human gut bacteria
Author
Ramasamy, U.S.
Venema, K.
Schols, H.A.
Gruppen, H.
Publication year
2014
Abstract
The aim of this research was to study the in vitro fermentation of chicory root pulp (CRP) and ensiled CRP (ECRP) using human fecal inoculum. Analysis of carbohydrate levels in fermentation digests showed that 51% of all CRP carbohydrates were utilized after 24 h of fermentation. For ECRP, having the same cell wall polysaccharide composition as CRP, but with solubilization of 4 times more of CRP pectin due to ensiling, the fermentation was quicker than with CRP as 11% more carbohydrates were utilized within the first 12 h. The level of fiber utilization for ECRP after 24 h was increased by 8% compared to CRP. This effect on fiber utilization from ECRP seemed to arise from (i) increased levels of soluble pectin fibers (arabinan, homogalacturonan, and galactan) and (ii) ahypothesized more open structure of the remaining cell walls in ECRP, which was more accessible to degradation than the CRP cell wall network. © 2014 American Chemical Society.
Subject
Life
MSB - Microbiology and Systems Biology
ELSS - Earth, Life and Social Sciences
Food and Nutrition
Biology
Healthy Living
Cell walls
Chicory root pulp
Ensiled chicory root pulp
Fermentation
Insoluble fiber
Pectin
Soluble fiber
Carbohydrates
Cells
Cytology
Fibers
Plants (botany)
Chicory roots
Soluble fiber
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DOI
https://doi.org/10.1021/jf501254z
TNO identifier
513447
ISSN
1520-5118
Source
Journal of Agricultural and Food Chemistry, 62 (28), 6794-6802
Document type
article