Gellan gum

Gellan gum
Names
Other names
Gum gellan; E418; [D-Glc(β1→4)D-GlcA(β1→4)D-Glc(β1→4)L-Rha(α1→3)]n
Identifiers
ECHA InfoCard 100.068.267 Edit this at Wikidata
EC Number
  • 275-117-5
E number E418 (thickeners, ...)
UNII
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Gellan gum is a water-soluble anionic polysaccharide produced by the bacterium Sphingomonas elodea (formerly Pseudomonas elodea based on the taxonomic classification at the time of its discovery).[1] The gellan-producing bacterium was discovered and isolated by the former Kelco Division of Merck & Company, Inc. in 1978 from the lily plant tissue from a natural pond in Pennsylvania. It was initially identified as a gelling agent to replace agar at significantly lower concentrations in solid culture media for the growth of various microorganisms.[2] Its initial commercial product with the trademark as Gelrite gellan gum, was subsequently identified as a suitable agar substitute as gelling agent in various clinical bacteriological media.[3]

  1. ^ Narendra B. Vartak, Chi Chung Lin, Joseph M. Cleary, Matthew J. Fagan, Milton H. Saier, Jr. (1995). "Glucose metabolism in Sphingomonas elodea': pathway engineering via construction of a glucose-6-phosphate dehydrogenase insertion mutant". Microbiology. 141 (9): 2339–2350. doi:10.1099/13500872-141-9-2339. PMID 7496544.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  2. ^ Kang K.S., Veeder G.T., Mirrasoul P.J., Kaneko T., Cottrell I.W. (1982) Agar-like polysaccharide produced by a Pseudomonas species: Production and basic properties. Applied & Environmental Microbiology, 43, 1086-1091.
  3. ^ Shungu D, Valiant M, Tutlane V, Weinberg E, Weissberger B, Koupal L, Gadebusch H, Stapley E.: GELRITE as an Agar Substitute in Bacteriological Media, Appl Environ Microbiol. 1983 Oct;46(4):840-5.