Pectinic acid sulphate

Thus the proteins have carboxyl, amino, guanidino, imida ol groups, substances such as gum arabic and pectinic acid have carboxyl groups, agar ester sulphate groups, nucleates phosphate groups as carriers of the electric charge. 

Under salts, el cetera, are included malic acid and gum, nitrogenous "subatanoes, fatty matters, aromatic substances, coloring matters, essential oil, chlorophyle, malamide, oxalate and phosphate of lime, phosphata of magnesia, chloride of, ammonium, silicate, nitrate, sulphate, and oxalate of potassa oxalate of soda, chlorides of sodium and potassium, peetates and pectinates of... 

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