Cardoso L.A.C.,Positivo University |
Jackel S.,LRGP BioProMo Plateforme Technologique science du Vivant et Sante |
Karp S.G.,Positivo University |
Framboisier X.,LRGP BioProMo Plateforme Technologique science du Vivant et Sante |
And 2 more authors.
Bioresource Technology | Year: 2016
The red yeast Sporobolomyces ruberrimus H110 was able to use glycerol as a carbon source. The highest concentration (0.51gL-1) and productivity (0.0064gL-1h-1) of carotenoids were achieved when raw glycerol from biodiesel production, containing around 1gL-1 of fatty acids, was used as the carbon source, which represented increases of 27% and 1.5×, respectively, in relation to pure glycerol. Mass spectrometry analysis led to the identification of four carotenoids in the fermented samples, torularhodin, torulene, β-carotene and γ-carotene. The use of raw glycerol also enhanced the proportion of torularhodin (69% against 59% in pure glycerol). The addition of individual fatty acids (palmitic, stearic, oleic and linoleic acids) to pure glycerol resulted in increases between 15% and 25% in maximum concentration and between 1.6× and 2.0× in productivity of carotenoids. The presence of palmitic and oleic acids increased the torularhodin proportion to 66%. © 2015 Published by Elsevier Ltd.