Oligosaccharides produced by partial acetolysis of xanthan gum

Optimisation of xanthan gum production by palm date (Phoenix dactylifera L.) juice by-products using response surface methodology

“…In this respect, the chemical composition of this polysaccharide is similar to commercial xanthan. Lowson and Symes (1977) found ramnose in the xanthan produced by the pathovar juglandis and considered the presence of ramnose desirable and indicative of the ability to develop gels in water. Souza and Vendruscolo (2000) also found ramnose in xanthan produced by the pathovar pruni.…”

Production and characterization of xantham gum by Xanthomonas campestris using cheese whey as sole carbon source

“…They also recovered an exopolysaccharide from a mutant strain of X. campestris pv campestris, which is soluble in alcoholic solutions and constituted mainly by ramnose. Lawson and Symes (1977) found a non-dialyzable polymer containing ramnose produced by X. campestris pv juglandis. X. campestris pv pruni and X. campestris pv juglandis, which were very similar, but not to the gum produced by X. campestris pv campestris (Vauterin and Swing, 1997).…”

A Xanthan-gum-like Polysaccharide from Acetobacter xylinum

“…Partial acetolysis was done either as by Kocourek & Ballou (1969) with minor modifications, or as by Lawson & Symes (1977), as indicated in each experiment.…”

“…partial acetolysis, as described by Lawson & Symes (1977). Maltose, sophorose, gentiobiose or laminaribiose were first methylated and then acid hydrolysed for preparing tetra-and the respective tri-0-methyl-glucose derivatives.…”

“…Acetolysis of acetan under milder conditions at 20 "C for 48 h (Lawson & Symes, 1977) led to the isolation of two neutral trisaccharides containing mannose and glucose. One was branched and was characterized as glucose(/ll-4)-[mannose(al-3)]-glucose (compound VI, Fig.…”