Screening of yeasts for growth on crude glycerol and optimization of biomass production

Bioresource Technology
Manuela TaccariMaurizio Ciani

Abstract

Out of 113 yeast strains tested, 45 grew on pure glycerol with growth rates ranging from 0.11 to 0.37h(-1). Twenty-three strains showed specific growth rates (h(-1)), biomass production and biomass yields higher or comparable to those on glucose which suggests that crude glycerol can be utilized as carbon source in yeast cultivation for biomass production. Response surface methodology was applied to optimize crude glycerol concentration and temperature for biomass production and yield by Yarrowia lipolytica (DiSVA C 12.1), Metschnikowia sp. (DiSVA 50), Debaryomyces sp. (DiSVA 45/9), and Rhodotorula mucilaginosa (DiSVA C 7.1). A biomass concentration of 25.7g/l and a biomass yield of 0.92g/g (Y/Xglyc) was obtained with Y. lipolytica DiSVA C 12.1 and with R. mucilaginosa DiSVA C 7.1, respectively. These results demonstrate the potential use of crude glycerol as carbon source in yeast cultivation and the yeast ability to convert low-value crude glycerol to added-value products.

References

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Citations

Jan 29, 2013·World Journal of Microbiology & Biotechnology·Raffaela CutzuIlaria Mannazzu
Apr 23, 2015·Bioorganicheskaia khimiia·Mansour Ghaffari-MoghaddamYamin Yasin
Sep 28, 2015·Bioresource Technology·Aleksandra M MirończukAdam Dobrowolski
Apr 30, 2013·Bioresource Technology·Susan Hartwig DuarteFrancisco Maugeri
Apr 11, 2015·Genome Announcements·Massimo DeligiosSergio Uzzau
Nov 30, 2014·Applied Biochemistry and Biotechnology·M KuttirajaRajeshwar Dayal Tyagi
Dec 30, 2014·Journal of Industrial Microbiology & Biotechnology·Luís Eduardo Fernandes Rodrigues da ConceiçãoRogelio Lopes Brandão
Oct 24, 2019·Tropical Animal Health and Production·Stéfane S CunhaMabio S J Silva
Sep 10, 2021·Bioprocess and Biosystems Engineering·Jan-Harm BarkhuizenJohann F Görgens

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