TABLE 1.

Production and composition details of some bacterial polysaccharides rich in rare sugars.

EPS	Producing strain	Composition	Substrates	Production (g/L)	Productivity (g/L·day)	Reference
Gellan gum	Sphingomonas paucimobilis	Rhamnose, glucose, and glucuronic acid	Sucrose	19.9–22.6	6.6–9.0	Zhang et al. (2015)
			Glucose	12.4	7.4	Giavasis et al. (2003)
			Whey	1.6–3.1	0.6–1.2	Dlamini and Peiris (1997)
		Acetyl and glyceryl groups	Soluble starch	37.5–43.6	14.5–18.8	Bajaj et al. (2006)
			Molasses	13.8	n.a.	Banik et al. (2007)
Welan	Alcaligenes sp.	Rhamnose, glucose, and glucuronic acid	Glucose	25.0–26.3	8.3–8.8	Li et al. (2011)
			Corn starch	22.8	7.6	Li et al. (2010)
Clavan	Clavibacter michiganensis	Fucose, glucose, and galactose	Glucose	0.7	0.06	van den Bulk et al. (1991)
		Acetyl, pyruvyl, and succinyl groups
FucoPol	Enterobacter A47	Fucose, glucose, galactose, and glucuronic acid	Glycerol	7.5–8.0	2.0–2.5	Torres et al. (2012)
			Glucose	13.4	3.4	Freitas et al. (2014)
			Xylose	5.4	1.4	Freitas et al. (2014)
		Acetyl, pyruvyl, and succinyl groups
Hyaluronic acid	Streptococcus sp.	Glucuronic acid and acetylglucosamine	Glucose	0.4–6.9	0.8–1.5	Huang et al. (2008)