Simultaneous utilization of glucose and xylose for lipid accumulation in black soldier fly

Biotechnology for Biofuels

Wu Li⁴  Mingsun Li³  Longyu Zheng³  Yusheng Liu²  Yanlin Zhang⁴  Ziniu Yu³  Zonghua Ma¹  Qing Li¹ 

[1] College of Science, Huazhong Agricultural University, Wuhan, People’s Republic of China

[2] Institute of Environmental Biology and Insect Resources, College of Plant Protection, Shandong Agricultural University, Tai’an, People’s Republic of China

[3] State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, People’s Republic of China

[4] College of Engineering, Huazhong Agricultural University, Wuhan, People’s Republic of China

关键词: Black soldier fly;    Xylose;    Glucose;    Rice straw;    Biodiesel;   

Others  :  1228588
DOI  :  10.1186/s13068-015-0306-z

 received in 2014-12-17, accepted in 2015-08-04,  发布年份 2015

【 摘 要 】

Background

Lignocellulose is known to be an abundant source of glucose and xylose for biofuels. Yeasts can convert glucose into bioethanol. However, bioconversion of xylose by yeasts is not very efficient, to say nothing of the presence of both glucose and xylose. Efficient utilization of xylose is one of the critical factors for reducing the cost of biofuel from lignocelluloses. However, few natural microorganisms preferentially convert xylose to ethanol. The simultaneous utilization of both glucose and xylose is the pivotal goal in the production of biofuels.

Results

In this paper, we found that 97.3 % of the glucose and 93.8 % of the xylose in our experiments was consumed by black soldier fly (BSF) simultaneously. The content of lipid reached its highest level (34.60 %) when 6 % xylose was added into the standard feed. 200 g of rice straw was pretreated with 1 % KOH, followed by enzymatic hydrolysis for fermentation of ethanol, the residue from this fermentation was then fed to BSF for lipid accumulation. In total, 10.9 g of bioethanol and 4.3 g of biodiesel were obtained.

Conclusions

The results of this study suggest that BSF is a very promising organism for use in converting lignocellulose into lipid for biodiesel production.

【 授权许可】

   
2015 Li et al.

【 图 表 】

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