Sterculia setigera, gum

Hirst E L, Hough L, Jones J K N 1949 The structure of Sterculia setigera gum. I. An investigation by the method of paper partition chromatography of the products of hydrolysis of the gum. J Chem Soc 3145-3151... 

Chromatography has proved to be an excellent tool for the identification and isolation of carbohydrates. Both paper and partition chromatography were employed for the identification and separation of D-tagatose from the gum exudate of Sterculia setigera. Previous to that, D-psicose and L-sorbose had been placed in the absorption series listed for clay.88 Conditions for zoning keto-D-psicose pentaacetate on magnesol-celite have been described by Binkley and Wolfrom (see page 126, ref. 137). 

When the gum of the shrub Sterculia setigera is subjected to acidic hydrolysis, one of the water-soluble components of the hydrolysate is found to be tagatose. The following information is known about tagatose ... 

Flowing Chromatogram, on Powdered Cellulose, of 1.6 g. of the Sugars from the Incomplete Hydrolysis of the Gum of the Sterculia setigera rree ... 

Component of pectins from the skin of the fruit of Passiflora edulis (passion fruit) Component of the gum exudates of Sterculia setigera Component of algal polysaccharides such as agar... 

Occurrence. D-Tagatose (D-Zyxo-hexulose, 32) has been found only as a hydrolytic product from a gum exudate of the tropical tree Sterculia setigera.154 A biological role of its 1-phosphate and 1,6-bisphosphate has been described in biotransformations of D-galactose in several microorganisms.155... 

Obt. as a hydrol. prod, from a gum exudate of the tropical tree Sterculia setigera and from the lichen Rocella linearis. Prepd. by alkaline isomerisation of D-Galactose or by oxidn. of n-Talitol with Acetobacter suboxydans. Used in the food industry. 

Aspinall G O, Fraser R N, Sanderson G R 1965 Plant gums of the genus Sterculia. III. Sterculia setigera and Cochlospermum gossypium gums. J Chem Soc 4325-4329... 

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