Studies on Vitamin B1 of Foods

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 Content of Foods

SOME twenty-odd years ago the public responded to its introduction to vitamins with a single question: ^Wliat good are they?^' This question was dramatically and convincingl3^ answered by the production of deficiency diseases in experimental animals receiving diets lacking these important nutrients. Interest immediately centered in discovering vitamin-containing foods which could prevent or cur...

Vitamin-B1 Deficiency

Studies on the response of Lactobacillus casei to folate vitamin in foods.

1. Folate was measured microbiologically with Lactobacillus casei in extracts from a range of different foods at two incubation pH values, 6.1 and 6.8. 2. The values for folate content obtained at pH 6.2 were, in several instances, considerably higher than at pH 6.8. The 'positive drift' seen in the values for dilutions incubated at pH 6.8 were absent from results at pH 6.2. 3. A comparison was...

Adsorption of Vitamin C on a Fullerene Surface: DFT Studies

Density functional theory (DFT) calculations were performed to investigate adsorptions of vitamin C (Vit) on the surface a fullerene structure (Ful) in gaseous and water–solvated systems. Two models of Vit including OVit and MVit were created based on the original structure of Vit for OVit and methylation of all hydroxyl groups for MVit. All singular and hybrid structures were optimized and the...