Microbial Lipid Production from Volatile Fatty Acids by Oleaginous Yeast

2018 ◽  
pp. 203-213
Author(s):  
Gwon W. Park ◽  
Nag-Jong Kim ◽  
Ho Nam Chang
Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1009
Author(s):  
Gwon Woo Park ◽  
Seongsoo Son ◽  
Myounghoon Moon ◽  
Subin Sin ◽  
Kyoungseon Min ◽  
...  

Microbial lipid production from oleaginous yeasts is a promising process for the sustainable development of the microbial biodiesel industry. However, the feedstock cost poses an economic problem for the production of microbial biodiesel. After lipid extraction, yeast biomass can be used as an organic source for microbial biodiesel production. In this study, volatile fatty acids (VFAs), produced via anaerobic digestion of a lipid-extracted yeast (LEY) residue, were utilized as a carbon source for the yeast Cryptococcus curvatus. The response surface methodology was used to determine the initial pH and inoculum volume for the optimal VFA production. The experimental result for VFA concentration was 4.51 g/L at an initial pH of 9 and an inoculation 25%. The optimization results from the response surface methodology showed that the maximal VFA concentration was 4.58 g/L at an initial pH of 8.40 and an inoculation of 39.49%. This study indicates that VFAs from LEY can be used as a carbon source for microbial biodiesel production, with the potential to significantly reduce feedstock costs.


2011 ◽  
Vol 35 (5) ◽  
pp. 1906-1911 ◽  
Author(s):  
Jie Zhang ◽  
Xu Fang ◽  
Xiao-Ling Zhu ◽  
Yan Li ◽  
Hai-Peng Xu ◽  
...  

2020 ◽  
Vol 4 (12) ◽  
pp. 5958-5969
Author(s):  
Dania Awad ◽  
Samer Younes ◽  
Matthias Glemser ◽  
Franz M. Wagner ◽  
Gerhard Schenk ◽  
...  

We describe, for the first time, the use of fast neutron irradiation for the rapid metabolic optimization of an oleaginous yeast. The approach established in this study provides a progressive path towards automatable strain development efforts.


Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1053 ◽  
Author(s):  
Xiaozan Dai ◽  
Hongwei Shen ◽  
Qiang Li ◽  
Kamal Rasool ◽  
Qian Wang ◽  
...  

Dry acid pretreatment and biodetoxification (DryPB) has been considered as an advanced technology to treat lignocellulosic materials for improved downstream bioconversion. In this study, the lipid production from DryPB corn stover was investigated by the oleaginous yeast Rhodosporidium toruloides using a new process designated prehydrolysis followed by simultaneous saccharification and lipid production (PreSSLP). The results found that prehydrolysis at 50 °C and then lipid production at 30 °C improved lipid yield by more than 17.0% compared with those without a prehydrolysis step. The highest lipid yield of 0.080 g/g DryPB corn stover was achieved at a solid loading of 12.5%. The fatty acid distribution of lipid products was similar to those of conventional vegetable oils that are used for biodiesel production. Our results suggested that the integration of DryPB process and PreSSLP process can be explored as an improved technology for microbial lipid production from lignocellulosic materials.


RSC Advances ◽  
2014 ◽  
Vol 4 (66) ◽  
pp. 34944 ◽  
Author(s):  
Jintao Lin ◽  
Shuangyue Li ◽  
Mingzhong Sun ◽  
Cuili Zhang ◽  
Wenbo Yang ◽  
...  

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