Gellan gum is a microbial polysaccharide derived fromPseudomonas elodeawhich is constituted of a repeating unit of four monomers that are glucose, glucuronic acid, glucose and rhamnose (Chen and Chen, 2007). A mixture of xanthan–gelan gum has been
used to encapsulate probiotic cells (Sultana et al., 2000; Sun and Griffiths, 2000) and contrary to alginate, the mixture presents high resistance towards acid conditions