IN NORMAL HUMAN SERUM, vitamin B12 exists mainly as a heat-labile complex bound to alpha-i globulin. A small fraction is present free or uncombined. Total vitamin B12 content of serum represents the sum of free and bound forms. These fractions are estimable with microbiologic methods. \licrobiologic assay of vitamin B12 in serum is now recognized to be one of the standard methods for proper app...

An experiment was conducted to study the effect in ovo injection of vitamins on the embryonic and post-hatch growth performance. Fertile eggs (n=350) were weighed, distributed in to 7 groups and set in force-draft incubator. On 14 th ED five groups were injected with 100 IU Vitamin-A, 0.5 IU Vitamin-E, 50 mg Vitamin-C, 100 μg Vitamin B1 and 100 μg Vitamin B6 dissolved in 0.5 ml of sterile water...

Vitamin B1, which consists of the vitamers thiamin and its phosphorylated derivatives, is an essential micronutrient for all living organisms because it is required as a metabolic cofactor in several enzymatic reactions. Genetic diversity of vitamin B1 biosynthesis and accumulation has not been investigated in major crop species other than rice and potato. We analyzed cassava germplasm for accu...

The regional variability and age-age correlation on vitamin B1, vitamin B2 and minerals (Ca, Mg, P, K, Cu, Fe, Mn, Na, and Zn) concentration in baobab leaves were investigated. Baobab was cultivated from seeds from 11 countries including Benin, Burkina Faso, Kenya, Malawi, Mali, Mozambique, Niger, Tanzania, Togo, Senegal, and Sudan. Vitamins B1 and B2 content were assessed using microbiological...

OBJECTIVE The role of a deficiency of vitamin B1 in the development of alcoholic complaints is confined to the case of the Wernicke-Korsakov syndrome. Findings concerning a deficiency of thiamine in alcoholics in comparison with normal persons are contradictory and there are no differentiated tests in the case of delirium tremens. In this study the vitamin B1 absorption in patients with deliriu...

We confirmed multiple picoeukaryotic algae, Ostreococcus, Micromonas, and Pelagomonas spp., as thiamine (vitamin B1) auxotrophs in laboratory experiments with axenic cultures. Examined strains have half saturation growth constants (Ks) for B1 between 1.26 and 6.22 pmol B1 L , which is higher than reported seawater concentrations. Minimum B1 cell quotas for Ostreococcus and Micromonas spp. are h...

Students of the vitamin B complex now agree on the existence of two physiologically active components, vitamin B1 (B) and vitamin B2 (G).4 From time to time experimental evidence has been presented indicating that these two alone cannot account for all of the properties of the old B complex.8 We present in this paper evidence that a "third factor" is associated with vitamin B1 (B) in a concentr...