Word: yeasting
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...group of his colleagues four test tubes containing 70 milligrams of a crystalline substance, Vitamine D, which he prefers to call by the name of "bios" first used by Professor Wildiers, of the University of Louvain, Belgium, in 1900. It was extracted from a solution of autolyzed (self-digested) yeast. It is an organic chemical structure composed of 43% carbon, 25% nitrogen, 8% hydrogen and 24% not yet completely analyzed...
Wildiers discovered over 20 years ago that the micro-organisms of yeast will grow rapidly in beer wort, but not in artificial media. He called the unknown agent of growth "bios" in a book called La Cellule. In 1916 Dr. Williams suggested that the substance previously called Vitamin B was identical with Wildiers' "bios." Extracts of some substances known to be rich in B stimulate yeast growth, and many substances have been tested for yeast stimulation as a means of measuring their B content...
...Funk and Dubin showed that the yeast-stimulating power might be merely accidentally associated with Vitamin B. When an extract rich in B is shaken with Fuller's earth all its anti-neuritic power (power to cure beriberi, the chief characteristic of Vitamin B) is removed, though it continues to stimulate yeast. Funk therefore proposed that Vitamin B was really two vitamins?B, the anti-neuritic, and D, the yeast-stimulating. Dr. E. V. McCollum, of Johns Hopkins University, one of the pioneer American investigators of vitamins, has also used the term Vitamin D for a factor present...
...Lash Miller, of the University of Toronto (TIME, Jan. 14) and Dr. E. J. Fulmer, of Iowa State College, working on the "bios" problem, with G. H. Lucas and others, found that "bios" was divisible into two substances, "Bios I" and "Bios II,"* both stimulating yeast growth in some measure, although not necessarily indispensable to it. They disagree with Eddy and Williams as to the identity of the "bioses" with Vitamin B, having made experiments which seem to disprove any constant relation, although both are frequently present in the same food. McCollum believes the term vitamin should be reserved...
Vitamins. Two new vitamins, "Bios I" and "Bios II," have been found by Dr. W. Lash Miller, Professor of Physical Chemistry at the University of Toronto. A substance called bios (life) was discovered 20 years ago by a Belgian professor at Louvain University, but Dr. Miller, in experimenting on yeast, found that minute quantities of this substance greatly stimulated the growth of cells. In attempting to extract it from wort, he found that it could be split into the two new compounds...