The Beneficial Effects of a Polysaccharide from <i>Moringa oleifera</i> Leaf on Gut Microecology in Mice

Researchers isolated a specific polysaccharide compound called MOs-2-a from moringa leaves and tested its effects on gut health in laboratory mice. This polysaccharide has a molecular weight of 1.35 × 10⁴ Da and was given to young mice daily for four weeks. The study found that this moringa-derived compound significantly improved multiple aspects of mouse health, including immune function, digestive capacity, and gut bacteria composition. The polysaccharide reduced inflammatory markers in the blood, specifically tumor necrosis factor-alpha and diamine oxidase levels, while improving digestive enzyme activity and organ health indices. Most notably, the compound acted as a prebiotic, promoting beneficial gut bacteria known for anti-obesity effects, short-chain fatty acid production, and lactic acid production. These bacteria are important for maintaining healthy metabolism and digestive function. The researchers concluded that this specific moringa leaf polysaccharide shows promise as a prebiotic supplement that could support overall health through gut microbiome improvement. This research is significant because it identifies a specific bioactive compound from moringa rather than testing crude leaf extracts, providing more precise understanding of how moringa components affect gut health and immunity.