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Sustainable arabitol production by a newly isolated Debaryomyces prosopidis strain cultivated on biodiesel-derived glycerol

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Carbon Resources Conversion 2022年第1期5卷 92-99页

作者： Rosanina Filippousi Erminta Tsouko Kerryane Mordini Dimitrios Ladakis Apostolis AKoutinas George Aggelis Seraphim Papanikolaou Department of Food Science and Human Nutrition Agricultural University of Athens75 Iera Odos11855 AthensGreece Unit of Microbiology Department of BiologyUniversity of Patras26504–Rio PatrasGreece

The purpose of this research was the bioconversion of biodiesel-derived glycerol to arabitol through the adoption of sustainable *** production by Debaryomyces prosopidis FMCC Y69 was significantly affected by initial glycerol *** highest arabitol concentration of 45.5 g/L was achieved in the case of 120 g/L initial glycerol combined with the highest yield(0.379 g arabitol/g initial glycerol).The yeast strain showed a non-typical oleaginous behavior with low accumulation of lipids(up to 20.9%w/w)despite nitrogen-limited condition that prevailed in the fermentation ***(IPs)were considerably high with a yield on the produced dry cell weight(YIPs/X)(=40.9%w/w)when 85 g/L of glycerol was utilized as the starting *** fermentation efficiency was further improved when the optimal carbon to nitrogen(C/N)ratio was *** specifically,arabitol production was maximized(reaching 56.5 g/L)at a C/N ratio of 158 moles/moles while yield and productivity were also enhanced with respective values of 0.48 g arabitol/g consumed glycerol and 0.112 g/*** increase in C/N ratios led to a decrease in cell dry weight(DCW)concentrations,which is rationally associated with decreased nitrogen availability in the growth ***/X values were remarkably high(23.1–26.1%w/w)at the end of each fermentation with the highest concentration in absolute values of 7.3 g/L achieved at the lowest C/N ratio employed(i.e.,79 moles/moles).This study demonstrated the efficient arabitol production along with other value-added metabolites,such as IPs and cellular lipids,implementing biotechnology and renewable resources and thus contributing to the development of circular economy technologies.

关键词： Bioprocessing Renewable resources Newly isolated yeast Arabitol production value added metabolites

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