If the fiber in carrots functions as a prebiotic, what specific action are they performing in the colon?
Answer
Selectively promoting the growth and/or activity of beneficial bacteria
The definition of a prebiotic centers on its selective action within the host's digestive tract. Prebiotics are specialized compounds, often indigestible fibers, that are not digested by human enzymes but instead become the preferred food source for specific strains of desirable bacteria, such as Bifidobacteria or Lactobacilli, residing in the colon. By fueling these beneficial populations, the prebiotic compounds encourage their proliferation and enhance their metabolic activity. This selective support leads to a healthier overall microbial community composition, distinct from probiotics, which are live microorganisms themselves.
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