How does the urea affect the yeast growth saccharomyces cerevisiae?

Answer 1

Yeast require an assimilable nitrogen source for growth and urea is one of the chemicals yeast can use for this purpose. It contains more nitrogen than Di Ammonium Phosphate (used extensively by winemakers) but is less popular due to its links with the production of urethane during fermentation. A lack of assimilable nitrogen will inhibit yeast growth. Excess nitrogen will not compensate for a lack of other nutrients. As a guide 300mg/L of Yeast Assimilable Nitrogen Content (YANC) is recommended for successful fermentation, but it does depend on the yeast strain.

Answer 2

Urea can act as a nitrogen source for yeast growth, aiding in protein synthesis and cell proliferation in Saccharomyces cerevisiae. However, excessive urea can be toxic to the yeast cells and inhibit their growth. It is important to carefully control the concentration of urea to optimize yeast growth in a culture.