Detail publikace

Study of metabolic adaptation of red yeasts to waste animal fat substrate

Originální název

Typ

konferenční sborník (ne článek)

Jazyk

angličtina

Originální abstrakt

Carotenogenic yeasts are oleaginous microorganisms capable of utilizing various food and agricultural industry waste substrates. In this work, four red yeast strains (Cystofilobasidium, Rhodotorula and Sporobolomyces sp.) were cultivated in media containing crude, emulsified, and enzymatically hydrolyzed animal waste fat, compared to glycerol and glucose, as carbon sources. During experiment production of total biomas, carotenoids, ergosterol, ubiquinone (HPLC-PDA), lipids (GC-FID), lipase and biosurfactants in yeast cells was studied in various condittions depending on media composition, carbon source and carbon/nitrogen ratio. Results showed that all studied strains are able to utilize solid and processed fat. Yeasts cultivted on hydrolyzed/emulsified fat in media with low C/N ration =13 produced more biomass compared to the control media. Lipid and lipidic metabolites production was enhanced several times on fat. The production of total lipids increased in all strains to C/N = 50. Oppositely, the production of carotenoids, ubiquinone and ergosterol dramatically decreased with increased C/N in all strains. Compounds accumulated in red yeasts have a great application potential and can be produced efficiently during the valorization of animal waste fat under the biorefinery concept. Simultaneous induction of lipase and biosurfactants was observed on crude fat substrate.

Klíčová slova

Yeasts, waste animal fat, carotenoids, lipids, lipases,

Vydáno

26. 2. 2021

Strany počet

URL

https://doi.org/10.1080/13102818.2020.1871544

BibTex

@proceedings{BUT170013,
  editor="Jiří {Holub} and Martin {Szotkowski} and Samuel {Šimanský} and Dana {Byrtusová} and Ivana {Márová} and Volha {Shapaval}",
  title="Study of metabolic adaptation of red yeasts to waste animal fat substrate",
  year="2021",
  pages="1",
  doi="10.1080/13102818.2020.1871544",
  url="https://doi.org/10.1080/13102818.2020.1871544"
}