They are mainly carbohydrates such as starch and sugar, proteids in the form of globulins or albumoses, and in many cases fats and oils, while certain other bodies of similar nutritive value are less widely distributed.
Globulins: serum-globulin, egg-globulin, lacto - globulin, cell-globulins.
Plant-globulins and plant-vitellines.
The globulins are insoluble in water and in dilute acids, but soluble in alkalies and in neutral salt solutions; these solutions are coagulated on boiling.
" Serum-globulin," also termed globulin or fibrino-plastic globulin, paraglobulin and paraglobin, occurs in blood serum; " cell-globulins " occur in many organs - liver,.
The nucleo-albumins or phospho-globulins are insoluble in water and acids, but soluble in alkalies, and have an acid reaction.