Non-conventional yeasts as superior production platforms for sustainable fermentation based bio-manufacturing processes
2020
Clara Navarrete | José L. Martínez
Non-conventional yeasts are an excellent option for a number of different industrial bioprocesses. They possess beneficial natural phenotypes, which translates to several fermentation advantages when compared to traditional hosts, like <em>Saccharomyces cerevisiae.</em> The non-conventional yeasts <em>Yarrowia lipolytica, Trichosporon oleaginosus, Kluyveromyces marxianus, Dekkera bruxellensis, Pichia kudriavzevii, Debaryomyces hansenii</em> and <em>Hansenula polymorpha,</em> are considered desirable industrial hosts due to their natural characteristics, including tolerance to several by-products and inhibitors, thermotolerance, salt resistance or osmo- and xerotolerance. Therefore, they are a great alternative for the industrial production of bioethanol, fine chemicals, lipids and recombinant proteins, among others. In this review, we summarize the best natural characteristics of those seven non-conventional yeasts and their use in industrial biotechnology, as well as the molecular/synthetic biology tools available for their genetic modification. Moreover, possible limitations regarding their performance in industrial fermentations and a list of challenges to overcome in the future are also discussed.
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