Heteropolysaccharide definition

Tremella/Cryptococcus. The first definitive compositional and structural studies (, ) on a member of this family of polysaccharides were done on the heteropolysaccharide produced by C. laurentii var. flavescens NRRL Y-1401. Because haploid, yeastlike species of the basidiomycetous genus Tremella formed glucu-ronoxylomannans (GXM) similar to those from species of Crypto-coccus, a taxonomic relationship was suggested between the genera "(576)7 Basidiomycetous perfect states were subsequently discovered for C. laurentii (7 ) and C. neoformans ( ). 

CAS 71010-52-1 EINECS/ELINCS 275-117-5 INS418 E418 Synonyms Gum geiian Definition High m.w. heteropolysaccharide gum produced by pure-culture fermentation of a carbohydrate with Pseudomonas eiodea Uses Fiim-former, geiiant, thickener, stabiiizer in foods, pet foods, personai care prods., pharmaceuticais, industriai appiics. 

Polysaccharides can be divided into two classes (1) homopolysaccharides consisting of only one kind of monosaccharide and (2) heteropolysaccharides consisting of two or more kinds of monosaccharide units. In the latter type, the arrangement or sequence of the monosaccharide units is usually in a definite, repeating pattern, rather than random. 

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