Bioresource Technology 255 (2018) 273–280 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevier.com/locate/biortech Aromatic hydrocarbon biodegradation activates neutral lipid biosynthesis in oleaginous yeast a b a, Farha Deeba , Vikas Pruthi , Yuvraj S. Negi Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: In this study, the biodegradation ability of oleaginous yeast Cryptococcus psychrotolerans IITRFD for aromatic Aromatic hydrocarbons hydrocarbons (AHs) was investigated. It was found to completely degrade range of AHs such as 1 g/L phenol, Oleaginous yeast 0.75 g/L naphthalene, 0.50 g/L anthracene and 0.50 g/L pyrene with lipid productivity (g/L/h) of 0.0444, Biodegradation 0.0441, 0.0394 and 0.0383, respectively. This work demonstrated the ring cleavage pathways of AHs by this Lipid productivity yeast which follow ortho route for phenol and naphthalene while meta route for anthracene and pyrene de- Biodiesel gradation. The end products generated during biodegradation of AHs are feed as precursors for de novo tria- cylglycerols (TAG) biosynthesis pathway of oleaginous yeast. A high quantity of lipid content (46.54%) was observed on phenol as compared
Bioresource Technology – Elsevier
Published: May 1, 2018
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