Abstract
Analytical data are presented for the polysaccharide and proteinaceous components of American samples of the gum exudates from Cassia grandis, Caesalpinia eriostachys and Caesalpinia sp. nov., Cercidium praecox, Lysiloma acapulcense, Senna nicaraguensis, Enterolobium cyclocarpum and from the gum extracted from the seed pods of Parkia nitida, all of which are members of the family Leguminosae. The gums from Cassia grandis and Cercidium praecox are very acidic; Cassia grandis gum contains an unusually high proportion of glycine; Cercidium praecox gum has a high nitrogen content; and the gums from Senna nicaraguensis and Caesalpinia sp. nov. are very viscous. All of the samples contain tannin; none are permitted in foodstuffs. The data may be of taxonomic interest; the gums from Cassia grandis, Caesalpinia sp. nov. and Cercidium praecox differ from the others studied in containing major amounts of galacturonic acid and xylose.
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