Antineuritic Yeast Concentrates

Antineuritic yeast concentrates. III: The curative pigeon test: a critique.

Lv. Antineuritic Yeast Concentrates. Iv. the Further Purification of Yeast Vitamin B1 (curative)1. by Henry Wulff Kinnersley and Rudolph

THIS work is being communicated now for two reasons. Confirmation of a previous statement is needed that preparations of activity under 0.1 mg. per day pigeon dose can be obtained from yeast. Moreover the details of preparing these more active concentrates are required in explanation of an accompanying paper [Peters, Kinnersley, Orr-Ewing and Reader, 1928]. It must be stated at the outset that ...

Composition and nutritive value of yeast biomass and yeast protein concentrates.

Yeast biomass (Saccharomyces sp.) produced in local breweries as a by-product was utilized in this study. Percent proximate composition, amino acid composition, and protein nutritive value were determined for the yeast cell biomass (YC), a sodium perchlorate extracted and isoelectrically precipitated protein concentrate (P-PC), and a sodium trimetaphosphate treated extract followed by isoelectr...

The Differential Extraction from Dried Brewers’ Yeast of the Antineuritic (vita-

Since the demonstration of the dual nature of vitamin B in 1926 (1, 2) which has been amply confirmed in recent years (35), there has been no satisfactory method for the separation of the heat-labile antineuritic (vitamin B,) from the more heat-stable growth-promoting (vitamin B,) component of the vitamin B complex. There are numerous experiments recorded in the lit,erature indicating that at l...

Xcvii. the Synthesis of the Antineuritic Factor

THERE has been some uncertainty as to whether yeast could synthesise vitamin B when grown on a medium which did not contain it. Macdonald [1922], Heller [1923], and Nelson, Fullmer and Cessna [1921] tested for the factor promoting growth in rats and found it present. Harden and Zilva [1921] and Heller [1923] tested for the antineuritic factor, and found this to be synthesised. But Eijkman, Hoog...