*3.1.1 Chemical composition*

Gum Arabic (GA) is a polysaccharide having branching chains of [1–3] connected β-D-galactopyranosyl units comprising α-L-arabinofuranosy, α-L-rhamnopyranosyl, β-D-glucuronopyranosyl, and 4-O-methyl-β-D-glucuronopyranosyl units. It is a water-soluble dietary fiber. Ca2+, K+ , and Mg2+ are abundant in GA. GA is made from the dried gummy exudates of *Acacia senegal*'s stems and branches. Microorganisms in the colon break down GA into short-chain fatty acids [10].
