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The content of vitamin B2 in yeast is much higher than in grapes
In the fermentation process of his somewhat reduced, while exposure of wine yeast is widening again. In vintage wines from the time the amount of vitamin B2 decreases.
Vitamin PP (nicotinic acid)
Nicotinic acid and its amide are antipellargicheskim vitamin, usually called pellagramin.
Nicotinic acid is resistant to high temperatures and a number of other factors. In vivo it is formed from tryptophan. In humans, nicotinic acid is easily converted into its amide. Both these substances have vitamin activity.
The structure of many coenzymes of dehydrogenases vitamin PP is in the form of dinucleotide, so these are called coenzymes piridindinukleotidami. They play an important role in redox processes.
In the process of fermentation, a decrease in the content of nicotinamide to 25-80%. Apparently, yeast adsorb the vitamin. Particularly sharp decreases in the number of its airing of wine, as in the presence of oxygen rapidly oxidizes vitamin PP. Despite the fact that yeast can synthesize nicotinamide content in wine never reaches its original level, that is, content in the grapes and in the wort.
Good wine is made in view of all processes was pleasant to use and good for health. And the main concern for wine producers to produce high quality wine that benefit human health. |
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