Thursday, March 22, 2018

Strains Producing Gellan Gum

Sphingomonas is a group of Gram-negative, rod-shaped, chemoheterotrophic, strictly aerobic bacteria
containing glycosphingolipids (GSLs) in their cell envelopes, and they typically produce yellow-pigmented colonies.

Some Sphingomonas species are not motile and not capable of fermentative metabolism (strictly aerobic), but
they all contain a series of unusual components, that is,18 or 21 carbon straight chain saturated or monosaturated dihydrosphingosines, or cyclopropane-containing dihydrosphingosines in ceramide glycolipid. 

The glycolipid contains an amide-2-hydroxyfatty acid, which is an indicator of novel lipid composition.
The bacterium used for the industrial production of gellan gum is Sphingomonas paucimobilis ATCC 31461.
Some researchers have isolated new strains producing gellan gum, but their use for commercial production has
not been reported. Different strains producing gellan gum are enlisted in Table below:

Organisms producing gellan gum: