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Sphingans are a group of EPS produced by Sphingomonas spp. They are of different types, namely, gellan gum produced by Sphingomonas elodea, welan gum produced by Sphingomonas spp. ATCC 31555, diutan gum produced by Sphingomonas sp. ATCC 53159, and rhamsan gum produced by Sphingomonas sp. RH‐1. All these EPS are structurally similar with identical backbone, but differ in the presence of side chain locations (Figure 3.2) [3].