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Fructo-oligosaccharides (FOS): Occurrence, Chemical Nature and Medicinal Benefits

  • Fructo-oligosaccharides are a type of carbohydrate that the human body cannot digest.

  • Found in bananas, onions, garlic, and asparagus, FOS serve as food for beneficial gut bacteria (probiotics), promoting a healthy digestive system.

Occurrence:

  • FOS naturally occur in a variety of plants and vegetables, including bananas, onions, chicory root, garlic, asparagus, jicama, and leeks.

  • They can also be synthesized commercially and are often added to foods as a prebiotic supplement.

Chemical Nature:

  • Fructo-oligosaccharides are short-chain fructose molecules linked together by glycosidic bonds.

  • They are classified as oligosaccharides, which are carbohydrates made up of a small number of monosaccharide (simple sugar) units.

  • Because human digestive enzymes cannot break down FOS, they reach the colon intact, where they serve as food for beneficial bacteria.

Medicinal Benefits:

1. Gut Health:

  • FOS support the growth of beneficial gut bacteria, particularly Bifidobacteria and Lactobacillus, enhancing the health and balance of the gut microbiome.

2. Digestive Aid:

  • By promoting healthy bacteria, they help improve digestion and can prevent or reduce the occurrence of constipation.

3. Immune System Support:

  • A healthy gut microbiome supported by FOS can enhance immune function and reduce the risk of infections.

4. Blood Sugar Management:

  • FOS may help regulate blood sugar levels by improving insulin sensitivity and decreasing the absorption of glucose.


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