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Lager yeast normally ferments at a temperature of approximately 5 °C (41 °F) or 278 k, where Saccharomyces cerevisiae becomes dormant. A variant yeast known as Saccharomyces cerevisiae var. diastaticus is a beer spoiler which can cause secondary fermentations in packaged products. [68]
The common incubation conditions are aerobic atmosphere, temperature 25 °C for a period of 5 days. Nevertheless, a higher incubation temperature (30 °C) and shorter incubation time (3 days) can be applied for Z. bailii, as the yeast grows faster at this elevated temperature. [14]
Komagataella is a methylotrophic yeast within the order Saccharomycetales.It was found in the 1960s as Pichia pastoris, with its feature of using methanol as a source of carbon and energy. [2]
The notion of doubling time dates to interest on loans in Babylonian mathematics. Clay tablets from circa 2000 BCE include the exercise "Given an interest rate of 1/60 per month (no compounding), come the doubling time." This yields an annual interest rate of 12/60 = 20%, and hence a doubling time of 100% growth/20% growth per year = 5 years.
Upon exposure to stressful conditions [heat (40 °C) or the oxidizing agent hydrogen peroxide] S. pombe cells undergo aging as measured by increased cell division time and increased probability of cell death. [20] Finally, wee1 mutant fission yeast cells are smaller than wild-type cells, but take just as long to go through the cell cycle.
Psychrophiles are extremophilic cold-loving bacteria or archaea with an optimal temperature for growth at about 15 °C or lower (maximal temperature for growth at 20 °C, minimal temperature for growth at 0 °C or lower). Psychrophiles are typically found in Earth's extremely cold ecosystems, such as polar ice-cap regions, permafrost, polar ...
Candida parapsilosis is a fungal species of yeast that has become a significant cause of sepsis and of wound and tissue infections in immunocompromised people. Unlike Candida albicans and Candida tropicalis, C. parapsilosis is not an obligate human pathogen, having been isolated from nonhuman sources such as domestic animals, insects and soil. [1]
Candida species are very pervasive yeasts that are distributed worldwide geographically. They are more likely to be found in tropical climate where temperature and humidity will enhance the adaptability of C. tropicalis. [5] They can be found in food such as sauerkraut, molasses, miso, fruit, baker’s yeast and some fruits. [10]