Abstract:
:Single cell oil (SCO) represents an outstanding alternative to both fossil sources and vegetable oils from food crops waste. In this work, an innovative two-step process for the conversion of cellulosic paper mill waste into SCO was proposed and optimised. Hydrolysates containing glucose and xylose were produced by enzymatic hydrolysis of the untreated waste. Under the optimised reaction conditions (Cellic® CTec2 25 FPU/g glucan, 48 h, biomass loading 20 g/L), glucose and xylose yields of 95 mol% were reached. The undetoxified hydrolysate was adopted as substrate for a batch-mode fermentation by the oleaginous yeast Lipomyces starkeyi. Lipid yield, content for single cell, production and maximum oil productivity were 20.2 wt%, 37 wt%, 3.7 g/L and 2.0 g/L/d respectively. This new generation oil, obtained from a negative value industrial waste, represents a promising platform chemical for the production of biodiesel, biosurfactants, animal feed and biobased plastics.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Di Fidio N,Dragoni F,Antonetti C,De Bari I,Raspolli Galletti AM,Ragaglini Gdoi
10.1016/j.biortech.2020.123790subject
Has Abstractpub_date
2020-11-01 00:00:00pages
123790eissn
0960-8524issn
1873-2976pii
S0960-8524(20)31062-2journal_volume
315pub_type
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