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The impacts of thiamin and pyridoxine along with YAN on alcoholic fermentation and hydrogen sulfide production by S. cerevisiae were studied. Using a synthetic grape juice medium, three fermentation trials were conducted; (a) 2 x 3 factorial design with thiamin (0, 0.2, or 0.5 mg L ) and YAN (60 or 250 mg L ) as variables, (b) 2 x 3 factorial design with pyridoxine (0, 0.25, or 0.5 mg L ) and YAN (60 or 250 mg L ) as variables, and (c) 3 x 3 factorial design with thiamin (0, 0.2, or 0.5 mg L ) and pyridoxine (0, 0.25, or 0.5 mg L ) as variables in media containing 60 mg L YAN. Although the progress of fermentations were affected by thiamin or pyridoxine, YAN had a larger impact than either vitamin. H S production was significantly lower with increasing amounts of thiamin in those fermentations under low YAN (60 mg L ) while even lower amounts (<30 µg L ) were produced under high YAN (250 mg L ) with or without the vitamin. The highest amounts of H S were synthesized in those fermentations without any pyridoxine (>110 µg L ), with the lowest production in media with pyridoxine and high YAN (<20 µg L ).
This article was published in the following journal.
Name: Letters in applied microbiology
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A member of the Rho family of MONOMERIC GTP-BINDING PROTEINS from SACCHAROMYCES CEREVISIAE. It is involved in morphological events related to the cell cycle. This enzyme was formerly listed as EC 184.108.40.206.
Proteins obtained from the species SACCHAROMYCES CEREVISIAE. The function of specific proteins from this organism are the subject of intense scientific interest and have been used to derive basic understanding of the functioning similar proteins in higher eukaryotes.
A species of the genus SACCHAROMYCES, family Saccharomycetaceae, order Saccharomycetales, known as "baker's" or "brewer's" yeast. The dried form is used as a dietary supplement.
A set of nuclear proteins in SACCHAROMYCES CEREVISIAE that are required for the transcriptional repression of the silent mating type loci. They mediate the formation of silenced CHROMATIN and repress both transcription and recombination at other loci as well. They are comprised of 4 non-homologous, interacting proteins, Sir1p, Sir2p, Sir3p, and Sir4p. Sir2p, an NAD-dependent HISTONE DEACETYLASE, is the founding member of the family of SIRTUINS.
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