Which two prebiotic compounds are onions rich in that specifically nourish Bifidobacteria and Lactobacilli in the colon?
Answer
Inulin and Fructooligosaccharides (FOS)
Onions are specifically noted for being rich sources of prebiotics, which are non-digestible fibers designed to feed beneficial gut bacteria. The two primary compounds responsible for this effect are Inulin and Fructooligosaccharides (FOS). These substances travel through the upper gastrointestinal tract without being digested, reaching the colon where they serve as essential food sources for beneficial probiotic populations, such as *Bifidobacteria* and *Lactobacilli*. Supporting these microbes is vital for improved nutrient absorption, enhanced immune response, and maintaining the integrity of the intestinal barrier.
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