Albus, white), an organic substance typical of a group of bodies (albumins or albuminates) of very complicated chemical composition.
The vegetable kingdom is the original source of albuminous substances, the albumins being found in greatest quantity in the seed.
The chemistry of the albumins is one of the most complicated and difficult in the whole domain of organic chemistry.
The albumins contain in all cases the elements carbon, hydrogen, nitrogen, sulphur and oxygen; their composition, however, varies within certain limits: C= 50-55%, H = 6.9-7'.3%,N = 15-19%,S =0.32.4%7 0=1 92 4%, General char- crystallized albumin is C = 51.48%, H = 6.76%, N= acters.
All albumins are laevo-rotatory; and on incineration a small amount of inorganic ash is invariably left.