An attempt to separate vitamin B2 from vitamin B1 in yeast and a comparison of its properties with those of the antineuritic vitamin B1

Vitamin B1

Vitamin B1 is a watersoluble vitamin. It consists out of a pyrimidineand a thiazol ring, which are synthesized independently and linked afterwards.Vitamin B1 is de novo produced by many plants and microorganisms. Humans and animals have to take it up by nutrition. They are only able to do the phosphorylation reaction of the thiamin molecule. Thiamin is found free and as mono-, diand triphosphat...

Vitamin-B1 Deficiency

The Vitamin B1 and B2 G Content of Liver Extract and Brewers' Yeast Concentrate

1. Liver extract powder, No. 343 Lilly, and the same material prepared for parenteral use, when administered daily by mouth in amounts derived from 2.5 gm. of fresh whole liver, to rats weighing from 40 to 50 gm., contain sufficient vitamin B(1) to support normal growth, provided the animals receive in addition an adequate amount of vitamin B(2) G. Moreover, liver extract in the forms mentioned...

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 ...

A Comparison of the Effects of Vitamin E and Vitamin B1 on the Severity and Duration of Pain in Primary Dysmenorrhea

Background and aim: Primary dysmenorrhea is defined as painful menstruation in the absence of any confirmed pelvic disease. Its incidence has been estimated between 50-90% in different communities. Non-steroidal anti-inflammatory drugs (NSAIDs) and contraceptives are usually prescribed for the treatment of primary dysmenorrhea; however, they cause several specific complications. Due to the impo...