IOO 



GRAMINE^E 



and the West Indies. Recommended as a diet for dyspeptic and 

 consumptive patients. 



Starches from the underground parts of Trlticum vulgare and 

 Oryza saliva, Gramineae; Solatium tuber osum (potato starch), Sol- 

 anaceae; Canna edulis, Maranta arundinacea, and Curcuma leucorrhiza, 

 Scitamineae. 

 Powder. Microscopical elements of: See Part iv, Chap. I, B. 



FIG. 20. Maranta Starch. (X 250). 



_J%^ 



)J<*> ^^Tfe, 3> 



"g 



S 



e 



e ^ 

 ^ 



FIG. 22. Wheat Starch. (X 250). 



FIG. 21. Curcuma Starch. (X 350) 



FIG. 23. Rice Starch. (X 250). 



FIG. 24. Potato Starch. (X 250). FIG. 25. Corn Starch. (X 500). 



See also Starches of Drugs, Part iv. 



CHEMICAL "'COMPOSITION. Starch is the basis of that class of organic 

 compounds termed carbohydrates. Its composition is CeHioOs. By 

 hydrolysis it is converted into a gummy principle, dextrin, and 

 glucose. Ferments convert it into alcohol and carbon dioxide 

 CeHioOs = 2C 2 H 5 OH + 2COa. Ash. Not more than 0.5 per cent. 



ACTION AND USES. Nutritive and demulcent. 



OFFICIAL PREPARATION. 



Glyceritum Amyli (10 per cent.). 



